Research activity information

• 2024 日本地震学会, 日本地震学会技術開発賞, 海底における長期・多点・広帯域地震観測の実現による地震学分野への貢献

• Revealing the beginning of Slab Windows at the Chilean Triple Junction

  Kellen Azúa, Satoshi Ide, Seiya Yano, Sergio Ruiz, Hiroko Sugioka, Hajime Shiobara, Aki Ito, Matthew Miller, Hikaru Iwamori

  May 2025


• Hydroacoustic observations of the 15 January 2022 Hunga Tonga-Hunga Ha‘apai eruption: The role of bathymetry along the path

  Joel D. Simon, Frederik Jozef Simons, Jessica Claire Elizabeth Irving, Wenbo Wu, Masayuki Obayashi, Yong Yu, Yongshun John Chen, Hiroko Sugioka, Yann Michel Hello

  Apr. 2025

  [Refereed]


• Detection and Location of the Oceanic Intraplate Earthquakes at the Oldest Pacific Plate Using Pacific Array (Oldest-1) Data

  Jun Yong Park, YoungHee Kim, Takehi Isse, Sang-Mook Lee, Kwang-Hee Kim, Hitoshi Kawakatsu, Hajime Shiobara, Hisashi Utada, Nozomu Takeuchi, Hiroko Sugioka

  Mar. 2025, Seismological Research Letters

  [Refereed]

  Scientific journal


• Linear response of deep ocean to a moving tropical cyclone

  Ryo Furue, Yoshio Fukao, Hiroko Sugioka

  Dec. 2024, PLOS Climate, 3(12) (12), e0000376 - e0000376, English

  [Refereed]

  Scientific journal


• Application of the reverberation waveform inversion for the high-resolution sediment layer structure in the Pacific

  HyeJeong Kim, Hitoshi Kawakatsu, Takeshi Akuhara, Nozomu Takeuchi, Takehi Isse, Hajime Shiobara, Hiroko Sugioka, Hisashi Utada, YoungHee Kim, Sang-Mook Lee

  Dec. 2024, Geophysical Journal International

  [Refereed]

  Scientific journal


• Seismic Image of the Central to Southern Andean Subduction Zone Through Finite‐Frequency Tomography

  Y. Kondo, M. Obayashi, H. Sugioka, H. Shiobara, A. Ito, M. Shinohara, H. Iwamori, M. Kinoshita, M. Miller, C. Tassara, J. Ojeda

  Nov. 2024, Journal of Geophysical Research: Solid Earth

  [Refereed]

  Scientific journal


• Geometrical barrier determines the updip limit of slow earthquake slip

  Takeshi Akuhara, Kazuya Shiraishi, Takeshi Tsuji, Yusuke Yamashita, Hiroko Sugioka, Atikul Farazi, Shukei Ohyanagi, Yoshihiro Ito, Ryuta Arai, Eiichiro Araki, Gou Fujie, Yasuyuki Nakamura, Takashi Tonegawa, Ryosuke Azuma, Ryota Hino, Kimihiro Mochizuki, Shunsuke Takemura, Tomoaki Yamada, Masanao Shinohara

  Aug. 2024


• Shallow structure and late quaternary slip rate of the Osaka Bay fault, western Japan

  Mari Hamahashi, Hironori Otsuka, Yoshiaki Suzuki, Jun Arimoto, Tetsuo Matsuno, Nobukazu Seama, Yuzuru Yamamoto, Hiroko Sugioka, Stephen A. Bowden, Satoshi Shimizu, Hikaru Iwamaru, Mamoru Sano, Keita Suzuki, Katsuya Kaneko, Kazuo Nakahigashi, Yoshiyuki Tatsumi

  Feb. 2024, Progress in Earth and Planetary Science, 11(1) (1)

  [Refereed]

  Scientific journal


• Submarine pyroclastic deposits from 7.3 ka caldera-forming Kikai-Akahoya eruption

  Satoshi Shimizu, Reina Nakaoka, Nobukazu Seama, Keiko Suzuki-Kamata, Katsuya Kaneko, Koji Kiyosugi, Hikaru Iwamaru, Mamoru Sano, Tetsuo Matsuno, Hiroko Sugioka, Yoshiyuki Tatsumi

  Feb. 2024, Journal of Volcanology and Geothermal Research, 448, 108017 - 108017

  [Refereed]

  Scientific journal


• Correction: Locating tectonic tremors with uncertainty estimates: time- and amplitude-difference optimization, wave propagation-based quality control and Bayesian inversion

  Takeshi Akuhara, Yusuke Yamashita, Hiroko Sugioka, Masanao Shinohara

  Oxford University Press (OUP), Jan. 2024, Geophysical Journal International, 236(3) (3), 1782 - 1784

  [Refereed]

  Scientific journal


• Locating tectonic tremors with uncertainty estimates: time- and amplitude-difference optimization, wave propagation-based quality control and Bayesian inversion

  Takeshi Akuhara, Yusuke Yamashita, Hiroko Sugioka, Masanao Shinohara

  SUMMARY The accurate location of tectonic tremors helps improve understanding of their underlying physical processes. However, current location methods often do not statistically evaluate uncertainties to a satisfactory degree and do not account for potential biases due to subsurface structures not included in the model. To address these issues, we propose a novel three-step process for locating tectonic tremors. First, the measured time- and amplitude differences between station pairs are optimized to obtain station-specific relative time and amplitude measurements with uncertainty estimates. Secondly, the time– and amplitude–distance relationships in the optimized data are used to roughly estimate the propagation speed (i.e. shear wave velocity) and attenuation strength. Linear regression is applied to each event, and the resulting velocity and attenuation strength are used for quality control. Finally, the tremor location problem is formulated within a Bayesian framework where the model parameters include the source locations, local site delay/amplification factors, shear wave velocity and attenuation strength. The Markov chain Monte Carlo algorithm is used to sample the posterior probability and is augmented by a parallel tempering scheme for an efficient global search. We tested the proposed method on ocean-bottom data indicating an intense episode of tectonic tremors in Kumano-nada within the Nankai Trough subduction zone. The results show that the range of the 95 per cent confidence interval is typically <7 km horizontally and <10 km vertically. A series of experiments with different inversion settings reveals that adopting amplitude data and site correction factors help reduce random error and systematic bias, respectively. Probabilistic sampling allows us to spatially map the probability of a tremor occurring at a given location. The probability map is used to identify lineaments of tremor sources, which provides insights into structural factors that favour tremor activity.

  Oxford University Press (OUP), Sep. 2023, Geophysical Journal International, 235(3) (3), 2727 - 2742

  [Refereed]

  Scientific journal


• Seismic Velocity Structure of Upper Mantle Beneath the Oldest Pacific Seafloor: Insights From Finite-Frequency Tomography

  Hyunsun Kang, Young Hee Kim, Shu Huei Hung, Pei Ying Patty Lin, Takehi Isse, Hitoshi Kawakatsu, Sang Mook Lee, Hisashi Utada, Nozomu Takeuchi, Hajime Shiobara, Hiroko Sugioka, Seung Sep Kim

  Sep. 2023, Geochemistry, Geophysics, Geosystems, 24(9) (9)

  [Refereed]

  Scientific journal


• Olivine Fabrics in the Oceanic Lithosphere Constrained by Pn Azimuthal Anisotropy

  Nozomu Takeuchi, Takehi Isse, Hitoshi Kawakatsu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Hisashi Utada, Tomoaki Yamada

  American Geophysical Union (AGU), Jun. 2023, Journal of Geophysical Research: Solid Earth, 128(6) (6)

  [Refereed]

  Scientific journal


• Seismic Structure of the Lithosphere-Asthenosphere System Beneath the Oldest Seafloor Revealed by Rayleigh-Wave Dispersion Analysis

  Yuki Kawano, Takehi Isse, Akiko Takeo, Hitoshi Kawakatsu, Manabu Morishige, Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, Young Hee Kim, Hisashi Utada, Sang Mook Lee

  Jun. 2023, Journal of Geophysical Research: Solid Earth, 128(6) (6)

  [Refereed]

  Scientific journal


• Characteristics of Background Noise in the Oldest-1 Array Deployed on the Oldest Part of the Pacific Plate

  Tae-shin Kim, Ji-hoon Park, Ji-won Ko, Se-young Oh, Michael Witek, Sung-Joon Chang, Sang-Mook Lee, YoungHee Kim, Hisashi Utada, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Nozomu Takeuchi, Hiroko Sugioka

  Apr. 2023, Bulletin of the Seismological Society of America, 113(4) (4), 1772 - 1793

  Scientific journal


• Noise Reduction from Vertical-Component Seismograms Recorded by Broadband Ocean-Bottom Seismometers Deployed at the Western Pacific

  Yuki Kawano, Takehi Isse, Hitoshi Kawakatsu, Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, YoungHee Kim, Hisashi Utada, Sang-Mook Lee

  ABSTRACT We modified existing methods of noise reduction to data recorded by Japanese broadband ocean-bottom seismometers (BBOBSs) deployed on the western Pacific seafloor conducted as the Oldest-1 Array observation. We removed the tilt and compliance noise that are dominant in low-frequency seismograms. We estimated the noise transfer function from the horizontal- to vertical-component seismograms to remove tilt noise from the vertical component. Throughout the observation period of about one year, the tilt noise transfer function was time-invariant and in phase at low frequencies (<0.06 Hz), which, in contrast to previous studies, enabled us to apply a constant transfer function and to estimate the tilt of the sensor. We estimated the noise transfer function from the pressure- to the vertical-component records and removed the compliance noise in the frequency range of 0.002–0.02 Hz. As a result of tilt and compliance noise removal, noise levels were reduced by up to 20 dB at frequencies below 0.03 Hz. We show that tilt noise reduction using the constant transfer function is appropriate for Japanese BBOBSs equipped with the CMG-3T sensor. Tilt angles of Oldest-1 Array are estimated as 0.3°–1.1° and maximum tilt directions are along the H1 component of the sensor, which are attributed to the architecture of the CMG-3T sensor.

  Seismological Society of America (SSA), Apr. 2023, Bulletin of the Seismological Society of America, 113(4) (4), 1759 - 1771

  [Refereed]

  Scientific journal


• Long-term array observation by ocean bottom seismometers at the Chile Triple Junction

  Aki Ito, Hajime Shiobara, Matthew Miller, Hiroko Sugioka, Javier Ojeda, Carlos Tassara, Masanao Shinohara, Masataka Kinoshita, Hikaru Iwamori

  Apr. 2023, Journal of South American Earth Sciences, 124, 104285 - 104285, English

  [Refereed]

  Scientific journal


• Inference of velocity structures of oceanic crust and upper mantle from surface waveform fitting

  Haruka Nagai, Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  Feb. 2023, Geophysical Journal International, 233(3) (3), 1974 - 1986, English

  [Refereed]

  Scientific journal


• Nature of mantle discontinuities beneath the Ontong Java Plateau

  Daisuke Suetsugu, Masayuki Obayashi, Takashi Tonegawa, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Junko Yoshimitsu

  Nov. 2022, Physics of the Earth and Planetary Interiors, 334, 106969 - 106969, English

  [Refereed]

  Scientific journal


• Seafloor depth controls seismograph orientation uncertainty

  Yasunori Sawaki, Yusuke Yamashita, Shukei Ohyanagi, Emmanuel Soliman M Garcia, Aki Ito, Hiroko Sugioka, Tsutomu Takahashi, Masanao Shinohara, Yoshihiro Ito

  Oct. 2022, Geophysical Journal International, 232(2) (2), 1376 - 1392, English

  [Refereed]

  Scientific journal


• Earthquake rupture and tsunami generation of the 2015 M w 5.9 Bonin event revealed by in‐situ pressure gauge array observations and integrated seismic and tsunami wave simulation

  Tatsuya Kubota, Tatsuhiko Saito, Yoshio Fukao, Hiroko Sugioka, Aki Ito, Takashi Tonegawa, Hajime Shiobara, Mikiya Yamashita

  Nov. 2021, Geophysical Research Letters, 48(22) (22), English

  [Refereed]

  Scientific journal


• Interrelation of the stagnant slab, Ontong Java Plateau, and intraplate volcanism as inferred from seismic tomography

  Masayuki Obayashi, Junko Yoshimitsu, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Takashi Tonegawa

  Oct. 2021, Scientific Reports, 11(1) (1), 20966 - 20966, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Receiver Function Imaging of the Amphibious NE Japan Subduction Zone—Effects of Low‐Velocity Sediment Layer

  HyeJeong Kim, Hitoshi Kawakatsu, Takeshi Akuhara, Masanao Shinohara, Hajime Shiobara, Hiroko Sugioka, Ryota Takagi

  Aug. 2021, Journal of Geophysical Research: Solid Earth, 126(9) (9)

  [Refereed]

  Scientific journal


• Detection of “Rapid” Aseismic Slip at the Izu-Bonin Trench

  Yoshio Fukao, Tatsuya Kubota, Hiroko Sugioka, Aki Ito, Takashi Tonegawa, Hajime Shiobara, Mikiya Yamashita, Tatsuhiko Saito

  Aug. 2021, Journal of Geophysical Research: Solid Earth, 126(9) (9), English, International magazine

  [Refereed]

  Scientific journal


• Seismic evidence for a thermochemical mantle plume underplating the lithosphere of the Ontong Java Plateau

  Takehi Isse, Daisuke Suetsugu, Akira Ishikawa, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yuki Kawano, Kazunori Yoshizawa, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu

  May 2021, Communications Earth & Environment, 2(1) (1), English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Tilt Observations at the Seafloor by Mobile Ocean Bottom Seismometers

  Hajime Shiobara, Aki Ito, Hiroko Sugioka, Masanao Shinohara, Toshinori Sato

  Mar. 2021, Frontiers in Earth Science, 8, English, International magazine

  [Refereed]

  Scientific journal


• Two independent signals detected by ocean bottom electromagnetometers during a non-eruptive volcanic event: Ogasawara Island arc volcano, Nishinoshima

  Kiyoshi Baba, Noriko Tada, Hiroshi Ichihara, Yozo Hamano, Hiroko Sugioka, Takao Koyama, Akimichi Takagi, Minoru Takeo

  Dec. 2020, Earth, Planets and Space, 72(1) (1), English

  [Refereed]

  Scientific journal


• Persistent Long‐Period Signals Recorded by an OBS Array in the Western‐Central Pacific: Activity of Ambrym Volcano in Vanuatu

  Yuki Kawano, Takehi Isse, Akiko Takeo, Hitoshi Kawakatsu, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu

  Oct. 2020, Geophysical Research Letters, 47(19) (19), English

  [Refereed]

  Scientific journal


• Inversion of Longer‐Period OBS Waveforms for P Structures in the Oceanic Lithosphere and Asthenosphere

  Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  Jul. 2020, Journal of Geophysical Research: Solid Earth, 125(7) (7), English

  [Refereed]

  Scientific journal


• High QScS beneath the Ontong Java Plateau

  Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi

  Dec. 2019, Earth, Planets and Space, 71(1) (1), English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Configuration and structure of the Philippine Sea Plate off Boso, Japan: constraints on the shallow subduction kinematics, seismicity, and slow slip events

  Ito Aki, Tonegawa Takashi, Uchida Naoki, Yamamoto Yojiro, Suetsugu Daisuke, Hino Ryota, Sugioka Hiroko, Obana Koichiro, Nakahigashi Kazuo, Shinohara Masanao

  Oct. 2019, Earth, Planets and Space, 71(1) (1), 111 - 111, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Characterization of Crustal and Uppermost‐Mantle Seismic Discontinuities in the Ontong Java Plateau

  T. Tonegawa, S. Miura, A. Ishikawa, T. Sano, D. Suetsugu, T. Isse, H. Shiobara, H. Sugioka, A. Ito, Y. Ishihara, S. Tanaka, M. Obayashi, J. Yoshimitsu, T. Kobayashi

  Jul. 2019, Journal of Geophysical Research: Solid Earth, 124(7) (7), 7155 - 7170, English

  [Refereed]

  Scientific journal


• Shallow Nonvolcanic Tremor Activity and Potential Repeating Earthquakes in the Chile Triple Junction: Seismic Evidence of the Subduction of the Active Nazca–Antarctic Spreading Center

  Miguel Saez, Sergio Ruiz, Satoshi Ide, Hiroko Sugioka

  Jul. 2019, Seismological Research Letters, 90(5) (5), 1740 - 1747, English

  [Refereed]

  Scientific journal


• Detection of Ocean Internal Tide Source Oscillations on the Slope of Aogashima Island, Japan

  Y. Fukao, T. Miyama, Y. Tono, H. Sugioka, A. Ito, H. Shiobara, M. Yamashita, S. Varlamov, R. Furue, Y. Miyazawa

  Jul. 2019, Journal of Geophysical Research: Oceans, 124(7) (7), 4918 - 4933, English

  [Refereed]

  Scientific journal


• Event Size Distribution of Shallow Tectonic Tremor in the Nankai Trough

  Masaru Nakano, Suguru Yabe, Hiroko Sugioka, Masanao Shinohara, Satoshi Ide

  Jun. 2019, Geophysical Research Letters, 46(11) (11), 5828 - 5836, English

  [Refereed]

  Scientific journal


• Surface wave tomography for the Pacific Ocean incorporating seafloor seismic observations and plate thermal evolution

  Takehi Isse, Hitoshi Kawakatsu, Kazunori Yoshizawa, Akiko Takeo, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Daisuke Suetsugu, Dominique Reymond

  Mar. 2019, Earth and Planetary Science Letters, 510(15) (15), 116 - 130, English

  [Refereed]

  Scientific journal


• Giant rhyolite lava dome formation after 7.3 ka supereruption at Kikai caldera, SW Japan

  Yoshiyuki Tatsumi, Keiko Suzuki-Kamata, Tetsuo Matsuno, Hiroshi Ichihara, Nobukazu Seama, Koji Kiyosugi, Reina Nakaoka, Kazuo Nakahigashi, Hideaki Takizawa, Kazuki Hayashi, Tatsuro Chiba, Satoshi Shimizu, Mamoru Sano, Hikaru Iwamaru, Haruhisa Morozumi, Hiroko Sugioka, Yojiro Yamamoto

  Dec. 2018, Scientific Reports, 8(1) (1), 2753 - 2753, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• In Situ Characterization of the Lithosphere-Asthenosphere System beneath NW Pacific Ocean Via Broadband Dispersion Survey With Two OBS Arrays

  Akiko Takeo, Hitoshi Kawakatsu, Takehi Isse, Kiwamu Nishida, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Hisashi Utada

  Sep. 2018, Geochemistry, Geophysics, Geosystems, 19(9) (9), 3529 - 3539, English

  [Refereed]

  Scientific journal


• Traveltime delay relative to the maximum energy of the wave train for dispersive tsunamis propagating across the Pacific Ocean: the case of 2010 and 2015 Chilean Tsunamis

  A Poupardin, P Heinrich, H Hebert, F Schindele, A Jamelot, D Reymond, H Sugioka

  Sep. 2018, Geophysical Journal International, 214(3) (3), 1538 - 1555, English

  [Refereed]

  Scientific journal


• Development of a Slow Earthquake Database

  Masayuki Kano, Naofumi Aso, Takanori Matsuzawa, Satoshi Ide, Satoshi Annoura, Ryuta Arai, Satoru Baba, Michael Bostock, Kevin Chao, Kosuke Heki, Satoshi Itaba, Yoshihiro Ito, Noriko Kamaya, Takuto Maeda, Julie Maury, Mamoru Nakamura, Takuya Nishimura, Koichiro Obana, Kazuaki Ohta, Natalia Poiata, Baptiste Rousset, Hiroko Sugioka, Ryota Takagi, Tsutomu Takahashi, Akiko Takeo, Yoko Tu, Naoki Uchida, Yusuke Yamashita, Kazushige Obara

  Jul. 2018, Seismological Research Letters, 89(4) (4), 1566 - 1575, English

  [Refereed]

  Scientific journal


• Ray Tracing for Dispersive Tsunamis and Source Amplitude Estimation Based on Green’s Law: Application to the 2015 Volcanic Tsunami Earthquake Near Torishima, South of Japan

  Osamu S, anbata, Shingo Watada, Kenji Satake, Yoshio Fukao, Hiroko Sugioka, Aki Ito, Hajime Shiobara

  Apr. 2018, Pure and Applied Geophysics, 175(4) (4), 1371 - 1385, English

  [Refereed]

  Scientific journal


• Mechanism of the 2015 volcanic tsunami earthquake near Torishima, Japan

  Yoshio Fukao, Osamu Sandanbata, Hiroko Sugioka, Aki Ito, Hajime Shiobara, Shingo Watada, Kenji Satake

  Apr. 2018, Science Advances, 4(4) (4), eaao0219, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Geophysical observations and landing survey at Nishinoshima volcano

  Takeo Minoru, Ohminato Takao, Maeno Fukashi, Shinohara Masanao, Baba Kiyoshi, Watanabe Atsushi, Ichihara Mie, Nishida Kiwamu, Kaneko Takayuki, Yasuda Atsushi, Sugioka Hiroko, Hamano Yozo, Tada Noriko, Nakano Shun, Yoshimoto Mitsuhiro, Takagi Akimichi, Nagaoka Yutaka

  Nishinoshima is an andesitic stratovolcano located in Ogasawara Islands, Japan. In November 2013, island-forming eruption started. Before the eruption, Nishinoshima was a small island of the area of 0.29 km² and elevation of 25 m but it had a huge edifice rising 3,000 m from the sea floor. By March 2016, area and elevation reached 2.7 km² and 140 m, respectively. We conducted various types of geophysical observations at this “difficult-to-access island” (950 km from Tokyo taking 90 min by Jet plane, or 24 h by ship). In June 2016, we conducted airborne observations using unmanned helicopter, collecting 250 grams of scoria and detailed 4K images of lava flows. OBSs (Ocean Bottom Seismometers) were deployed around Nishinoshima in four periods. From February 2015 to May 2017, characteristic waveforms dominated at 4–8 Hz band were frequently observed. Comparisons with infrasonic records and video images revealed that the 4–8 Hz seismic signals were associated with eruptions at pyroclastic cone. The number of seismic signals of this type declined from July 2015, and disappeared in November 2015, suggesting that the eruptive activity started declining in July 2015 and ceased in the middle of November 2015. In October 2016, we landed and deployed a broadband seismometer and an infrasonic sensor in the old Nishinoshima, collecting a lot of new lava, deposits, and ash samples. We demonstrated a capacity of remote-island volcano monitoring system for one day test navigation circling around Nishinoshima. After one and a half year quiescence, a new eruptive phase started in April, 2017. Our on-land seismic sensor detected precursory signals as early as April 17. The seismometer also recorded characteristic waveforms during the very early stage of the new eruption phase before data transmission was terminated on April 21.

  Advanced Marine Science and Technology Society, 2018, Journal of Advanced Marine Science and Technology Society, 24(1) (1), 45 - 56, Japanese

  [Refereed]


• The OJP array: seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau

  Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Noriko Tada, Aki Ito, Takehi Isse, Kiyoshi Baba, Hiroshi Ichihara, Toyonobu Ota, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi, Hisashi Utada

  We conducted geophysical observations on the Ontong Java Plateau (OJP) and its vicinity from late 2014 to early 2017 to determine the underlying crust and upper mantle structure beneath the OJP. Most of the OJP was emplaced in the present South Pacific region at 122 Ma by massive volcanism, but the origin of this volcanism are still debated. Previous studies have suggested that seismic velocity beneath the OJP is anomalously slow, thus this could represent thermal or chemical remnants of the volcanism. However, the seismic resolution of the slow anomalies is poor due to lack of seafloor observations. The observation network named "the OJP array" is composed of seafloor and island stations. The seafloor stations have broadband ocean bottom seismographs and ocean bottom electromagnetometers. The island stations have broadband seismographs. The OJP array is designed to obtain seismic and electrical conductivity structures of the mantle beneath the OJP with better resolution than that of previous studies. Joint analysis and interpretation of seismological and electromagnetic data should provide tight constraints to thermal and chemical structures and clarify the origin of OJP emplacement.

  Japan Agency for Marine-Earth Science and Technology, 2018, JAMSTEC Report of Research and Development, 26(0) (0), 54 - 64, English

  [Refereed]

  Scientific journal


• Excitation Location and Seasonal Variation of Transoceanic Infragravity Waves Observed at an Absolute Pressure Gauge Array

  T. Tonegawa, Y. Fukao, H. Shiobara, H. Sugioka, A. Ito, M. Yamashita

  Jan. 2018, Journal of Geophysical Research: Oceans, 123(1) (1), 40 - 52, English

  [Refereed]

  Scientific journal


• Continuous seismic monitoring of Nishinoshima volcano, Izu-Ogasawara, by using long-term ocean bottom seismometers

  Masanao Shinohara, Mie Ichihara, Shin'Ichi Sakai, Tomoaki Yamada, Minoru Takeo, Hiroko Sugioka, Yutaka Nagaoka, Akimichi Takagi, Taisei Morishita, Tomozo Ono, Azusa Nishizawa

  Dec. 2017, Earth, Planets and Space, 69(1) (1), 1 - 9, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Upper boundaries of the Pacific and Philippine Sea plates near the triple junction off the Boso Peninsula deduced from ocean-bottom seismic observations

  Aki Ito, Hiroko Sugioka, Koichiro Obana, Ryota Hino, Daisuke Suetsugu, Kazuo Nakahigashi, Masanao Shinohara, Masaru Nakano, Yojiro Yamamoto

  Dec. 2017, Earth, Planets and Space, 69(1) (1), 30 - 30, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Tomographic image of crust and upper mantle off the Boso Peninsula using data from an ocean-bottom seismograph array

  Aki Ito, Yojiro Yamamoto, Ryota Hino, Daisuke Suetsugu, Hiroko Sugioka, Masaru Nakano, Koichiro Obana, Kazuo Nakahigashi, Masanao Shinohara

  Dec. 2017, Earth, Planets and Space, 69(1) (1), 118 - 118, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic thickness, and water content

  Tetsuo Matsuno, Daisuke Suetsugu, Kiyoshi Baba, Noriko Tada, Hisayoshi Shimizu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Masayuki Obayashi, Hisashi Utada

  Mar. 2017, Earth and Planetary Science Letters, 462, 189 - 198, English

  [Refereed]

  Scientific journal


• Seasonality of fin whale "Balaenoptera physalus" call interval obtained from ocean bottom seismic observation system in Northeast Japan

  Rintaro Yoshida, Hidehiro Kato, Hiroko Sugioka, Masanori Kyo

  2017, OCEANS 2017 - ANCHORAGE, 1 - 5, English

  [Refereed]

  International conference proceedings


• Upper mantle structure beneath the Society hotspot and surrounding region using broadband data from ocean floor and islands

  Takehi Isse, Hiroko Sugioka, Aki Ito, Hajime Shiobara, Dominique Reymond, Daisuke Suetsugu

  Dec. 2016, Earth, Planets and Space, 68(1) (1), 1 - 12, English

  [Refereed]

  Scientific journal


• Time–Frequency Characteristics of Tsunami Magnetic Signals from Four Pacific Ocean Events

  N. R. Schnepf, C. Manoj, C. An, H. Sugioka, H. Toh

  Dec. 2016, Pure and Applied Geophysics, 173(12) (12), 3935 - 3953, English

  [Refereed]

  Scientific journal


• Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data

  M. Obayashi, J. Yoshimitsu, H. Sugioka, A. Ito, T. Isse, H. Shiobara, D. Reymond, D. Suetsugu

  Nov. 2016, Geophysical Research Letters, 43(22) (22), 11,628 - 11,634, English

  [Refereed]

  Scientific journal


• Sensing of upslope passages of frontal bores across the trench slope break of the Japan Trench

  Yoshio Fukao, Hiroko Sugioka, Aki Ito, Hajime Shiobara, Jerome M. Paros, Ryo Furue

  May 2016, Journal of Geophysical Research: Oceans, 121(5) (5), 3422 - 3434, English

  [Refereed]

  Scientific journal


• Seismic azimuthal anisotropy in the oceanic lithosphere and asthenosphere from broadband surface wave analysis of OBS array records at 60 Ma seafloor

  A. Takeo, H. Kawakatsu, T. Isse, K. Nishida, H. Sugioka, A. Ito, H. Shiobara, D. Suetsugu

  Mar. 2016, Journal of Geophysical Research: Solid Earth, 121(3) (3), 1927 - 1947, English

  [Refereed]

  Scientific journal


• On the role of frequency dispersion on the transpacific tsunamis: study of the 2010 and 2015 Chilean tsunamis

  Poupardin, Adrien, Heinrich, Philippe, Hebert, Helene, Schindele, Francois, Jamelot, Anthony, Reymond, Dominique, Sugioka, Hiroko

  2016, OCEANS 2016 MTS/IEEE MONTEREY, 2016(OCE) (OCE), English

  [Refereed]

  International conference proceedings


• Detection and characterization of whale signals using seafloor cabled seismic networks offshore Japan

  Hiroko Sugioka, Masanori Kyo, Rintaro Yoshida, Hiroko Yamada, Hidehiro Kato

  Oct. 2015, OCEANS 2015 - MTS/IEEE Washington, English

  [Refereed]

  International conference proceedings


• Small size very low frequency earthquakes in the Nankai accretionary prism, following the 2011 Tohoku-Oki earthquake

  Akiko To, Koichiro Obana, Hiroko Sugioka, Eiichiro Araki, Narumi Takahashi, Yoshio Fukao

  Aug. 2015, Physics of the Earth and Planetary Interiors, 245, 40 - 51, English

  [Refereed]

  Scientific journal


• Tsunami: Ocean dynamo generator

  Hiroko Sugioka, Yozo Hamano, Kiyoshi Baba, Takafumi Kasaya, Noriko Tada, Daisuke Suetsugu

  May 2015, Scientific Reports, 4(1) (1), 3596 - 3596, English, International magazine

  [Refereed]

  Scientific journal


• PandSvelocity tomography of the Mariana subduction system from a combined land-sea seismic deployment

  Mitchell Barklage, Douglas A. Wiens, James A. Conder, Sara Pozgay, Hajime Shiobara, Hiroko Sugioka

  Mar. 2015, Geochemistry, Geophysics, Geosystems, 16(3) (3), 681 - 704, English

  [Refereed]

  Scientific journal


• NX-2G: autonomous BBOBS-NX for a highly mobile broadband seismic and tilt observation at the seafloor

  Hajime Shiobara, Masanao Shinohara, Hiroko Sugioka, Aki Ito

  2015, OCEANS 2015 - MTS/IEEE WASHINGTON, English

  [Refereed]

  International conference proceedings


• Finite frequency whole mantlePwave tomography: Improvement of subducted slab images

  Masayuki Obayashi, Junko Yoshimitsu, Guust Nolet, Yoshio Fukao, Hajime Shiobara, Hiroko Sugioka, Hiroki Miyamachi, Yuan Gao

  Nov. 2013, Geophysical Research Letters, 40(21) (21), 5652 - 5657, English

  [Refereed]

  Scientific journal


• Aftershocks near the updip end of the 2011 Tohoku-Oki earthquake

  Koichiro Obana, Shuichi Kodaira, Masanao Shinohara, Ryota Hino, Kenji Uehira, Hajime Shiobara, Kazuo Nakahigashi, Tomoaki Yamada, Hiroko Sugioka, Aki Ito, Yasuyuki Nakamura, Seiichi Miura, Tetsuo No, Narumi Takahashi

  Nov. 2013, Earth and Planetary Science Letters, 382, 111 - 116, English

  [Refereed]

  Scientific journal


• Radially anisotropic structure beneath the Shikoku Basin from broadband surface wave analysis of ocean bottom seismometer records

  A. Takeo, K. Nishida, T. Isse, H. Kawakatsu, H. Shiobara, H. Sugioka, T. Kanazawa

  Jun. 2013, Journal of Geophysical Research: Solid Earth, 118(6) (6), 2878 - 2892, English

  [Refereed]

  Scientific journal


• Small-scale heterogeneities in the oceanic lithosphere inferred from guided waves

  Azusa Shito, Daisuke Suetsugu, Takashi Furumura, Hiroko Sugioka, Aki Ito

  May 2013, Geophysical Research Letters, 40(9) (9), 1708 - 1712, English

  [Refereed]

  Scientific journal


• A temporal change of shear wave anisotropy within the marine sedimentary layer associated with the 2011 Tohoku-Oki earthquake

  Takashi Tonegawa, Yoshio Fukao, Kiwamu Nishida, Hiroko Sugioka, Aki Ito

  Feb. 2013, Journal of Geophysical Research: Solid Earth, 118(2) (2), 607 - 615, English

  [Refereed]

  Scientific journal


• Detection of small earthquakes along the Pacific-Antarctic Ridge from T-waves recorded by abyssal ocean-bottom observatories

  Aki Ito, Hiroko Sugioka, Daisuke Suetsugu, Hajime Shiobara, Toshihiko Kanazawa, Yoshio Fukao

  Sep. 2012, Marine Geophysical Research, 33(3) (3), 229 - 238, English

  [Refereed]

  Scientific journal


• Tsunamigenic potential of the shallow subduction plate boundary inferred from slow seismic slip

  Hiroko Sugioka, Taro Okamoto, Takeshi Nakamura, Yasushi Ishihara, Aki Ito, Koichiro Obana, Masataka Kinoshita, Kazuo Nakahigashi, Masanao Shinohara, Yoshio Fukao

  Jun. 2012, Nature Geoscience, 5(6) (6), 414 - 418, English

  [Refereed]

  Scientific journal


• TIARES Project—Tomographic investigation by seafloor array experiment for the Society hotspot

  Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Takafumi Kasaya, Noriko Tada, Kiyoshi Baba, Natsue Abe, Yozo Hamano, Pascal Tarits, Jean-Pierre Barriot, Dominique Reymond

  Apr. 2012, Earth, Planets and Space, 64(4) (4), i - iv, English

  [Refereed]

  Scientific journal


• Seismogenic characteristics of the Northern Mariana shallow thrust zone from local array data

  Erica L. Emry, Douglas A. Wiens, Hajime Shiobara, Hiroko Sugioka

  Dec. 2011, Geochemistry, Geophysics, Geosystems, 12(12) (12), n/a - n/a, English

  [Refereed]

  Scientific journal


• Long-Range Detection and Location of Shallow Underwater Explosions Using Deep-Sound-Channel Hydrophones

  Mark K. Prior, Oscar Meless, Paulina Bittner, Hiroko Sugioka

  Oct. 2011, IEEE Journal of Oceanic Engineering, 36(4) (4), 703 - 715, English

  [Refereed]

  Scientific journal


• Double seismic zone in the North Mariana region revealed by long-term ocean bottom array observation

  Hajime Shiobara, Hiroko Sugioka, Kimihiro Mochizuki, Satoko Oki, Toshihiko Kanazawa, Yoshio Fukao, Kiyoshi Suyehiro

  Dec. 2010, Geophysical Journal International, 183(3) (3), 1455 - 1469, English

  [Refereed]

  Scientific journal


• Evidence for infragravity wave-tide resonance in deep oceans

  Hiroko Sugioka

  Dec. 2010, Nature Communications, 1, 84 - 84, English, International magazine

  [Refereed]

  Scientific journal


• Shear velocity structure of the Mariana mantle wedge from Rayleigh wave phase velocities

  Moira L. Pyle, Douglas A. Wiens, Dayanthie S. Weeraratne, Patrick J. Shore, Hajime Shiobara, Hiroko Sugioka

  Nov. 2010, Journal of Geophysical Research: Solid Earth, 115(11) (11), English

  [Refereed]

  Scientific journal


• Depths of the 410-km and 660-km discontinuities in and around the stagnant slab beneath the Philippine Sea: Is water stored in the stagnant slab?

  Daisuke Suetsugu, Toru Inoue, Masayuki Obayashi, Akira Yamada, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Toshihiko Kanazawa, Hitoshi Kawakatsu, Azusa Shito, Yoshio Fukao

  Nov. 2010, Physics of the Earth and Planetary Interiors, 183(1-2) (1-2), 270 - 279, English

  [Refereed]

  Scientific journal


• Anisotropic structures of the upper mantle beneath the northern Philippine Sea region from Rayleigh and Love wave tomography

  Takehi Isse, Hajime Shiobara, J.-P. Montagner, Hiroko Sugioka, Aki Ito, Azusa Shito, Toshihiko Kanazawa, Kazunori Yoshizawa

  Nov. 2010, Physics of the Earth and Planetary Interiors, 183(1-2) (1-2), 33 - 43, English

  [Refereed]

  Scientific journal


• Fast P- and S-wave velocities associated with the “cold” stagnant slab beneath the northern Philippine Sea

  Hiroko Sugioka, Daisuke Suetsugu, Masayuki Obayashi, Yoshio Fukao, Yuan Gao

  Mar. 2010, Physics of the Earth and Planetary Interiors, 179(1-2) (1-2), 1 - 6, English

  [Refereed]

  Scientific journal


• South Pacific mantle plumes imaged by seismic observation on islands and seafloor

  D. Suetsugu, T. Isse, S. Tanaka, M. Obayashi, H. Shiobara, H. Sugioka, T. Kanazawa, Y. Fukao, G. Barruol, D. Reymond

  Nov. 2009, Geochemistry, Geophysics, Geosystems, 10(11) (11), n/a - n/a, English

  [Refereed]

  Scientific journal


• Mapping upper mantle flow beneath French Polynesia from broadband ocean bottom seismic observations

  G. Barruol, D. Suetsugu, H. Shiobara, H. Sugioka, S. Tanaka, G. H. R. Bokelmann, F. R. Fontaine, D. Reymond

  Jul. 2009, Geophysical Research Letters, 36(14) (14), English

  [Refereed]

  Scientific journal


• On the vertical extent of the large low shear velocity province beneath the South Pacific Superswell

  S. Tanaka, D. Suetsugu, H. Shiobara, H. Sugioka, T. Kanazawa, Y. Fukao, G. Barruol, D. Reymond

  Apr. 2009, Geophysical Research Letters, 36(7) (7), n/a - n/a, English

  [Refereed]

  Scientific journal


• Seismic attenuation tomography of the Mariana subduction system: Implications for thermal structure, volatile distribution, and slow spreading dynamics

  Sara H. Pozgay, Douglas A. Wiens, James A. Conder, Hajime Shiobara, Hiroko Sugioka

  Apr. 2009, Geochemistry, Geophysics, Geosystems, 10(4) (4), n/a - n/a, English

  [Refereed]

  Scientific journal


• Physical properties of subducted slab and surrounding mantle in the Izu-Bonin subduction zone based on Broadband Ocean Bottom Seismometer data

  Azusa Shito, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yasuko Takei, Hitoshi Kawakatsu, Toshihiko Kanazawa

  Mar. 2009, Journal of Geophysical Research, 114(B3) (B3), English

  [Refereed]

  Scientific journal


• Seismic structure of the upper mantle beneath the Philippine Sea from seafloor and land observation: Implications for mantle convection and magma genesis in the Izu–Bonin–Mariana subduction zone

  T ISSE, H SHIOBARA, Y TAMURA, D SUETSUGU, K YOSHIZAWA, H SUGIOKA, A ITO, T KANAZAWA, M SHINOHARA, K MOCHIZUKI

  Feb. 2009, Earth and Planetary Science Letters, 278(1-2) (1-2), 107 - 119, English

  [Refereed]

  Scientific journal


• P-wave tomography of the mantle beneath the South Pacific Superswell revealed by joint ocean floor and islands broadband seismic experiments

  S. Tanaka, M. Obayashi, D. Suetsugu, H. Shiobara, H. Sugioka, J. Yoshimitsu, T. Kanazawa, Y. Fukao, G. Barruol

  Feb. 2009, Physics of the Earth and Planetary Interiors, 172(3-4) (3-4), 268 - 277, English

  [Refereed]

  Scientific journal


• Review of five years of activity at IFREE /JAMSTEC

  Yoshio Fukao, Shuichi Kodaira, Masataka Kinoshita, Yoshiyuki Tatsumi, Naohiko Ohkochi, Katsuhiko Suzuki, Daisuke Suetsugu, Takeshi Hanyu, Hiroko Sugioka, Shigeaki Ono, Kei Hirose, Takatoshi Yanagisawa, Yozo Hamano, Toshiya Fujiwara, Hiroshi Kitazato, Narumi Takahashi, Hide Sakaguchi

  The Institute for Research on Earth Evolution (IFREE) consists of five programs. During this five-year period, each program has pursued its own research targets, but at the same time each has made a considerable effort to work with other programs on subjects otherwise not easily approached. By selecting eight such subjects, we review our work in the 2004-2008 period.

  Japan Agency for Marine-Earth Science and Technology, 2009, JAMSTEC Report of Research and Development, 9(2) (2), 43 - 94, English

  [Refereed]

  Scientific journal


• Calibration of deep sea differential pressure gauge

  Eiichiro Araki, Hiroko Sugioka

  A deep-sea differential pressure gauge (DPG) is very sensitive pressure sensor suitable for observation for earthquakes and acoustic phenomena in frequencies 10mHz to 1Hz, providing much lower noise floor compared to existing quartz pressure gauge. Frequency response of DPG is affected by temperature and pressure environment where the sensor is installed. Methods to estimate sensitivity and frequency response of DPG were developed, by comparing pressure data with those from quartz pressure gauge of Paroscientific, Inc. Two calibration methods to apply low frequency pressure change were experimented, one in the seafloor, and the other in a laboratory. Using these methods, precise sensitivity and frequency response calibration of DPG can be practiced.

  Japan Agency for Marine-Earth Science and Technology, 2009, JAMSTEC Report of Research and Development, 2009(2009) (2009), 141 - 148, English

  [Refereed]

  Scientific journal


• An installation experiment with broadband ocean bottom seismometers for reducing low frequency seismic noises.

  Aki Ito, Hiroko Sugioka, Eiichiro Araki

  A seismometer installed on the seafloor is affected by water flow, which could cause a noise in seismic records. The noise is significant especially for low frequencies below 0.1 Hz. For seafloor seismic observatories installed by free fall from a ship, it should be important to improve seafloor coupling of seismometer for reducing the low frequency seismic noise. In order to seek for an installation method that gives a better low frequency performance of seismometers, we conducted an installation experiment using two broadband ocean bottom seismometers with different types of anchor. The two seismometers were placed closely, within 150 m to each other: one with a conventional grid type anchor and the other with a wide planar anchor. The wide planar anchor was used to improve the seafloor coupling of seismometer. The experiment was conducted in the Kumano Basin off Kii Peninsula, from late December, 2007 to early February, 2008. For horizontal components, a noise level obtained from the seismometer with the planar anchor was comparable to that from the seismometer with the conventional anchor. For the vertical-component record, however, the seismometer with the planar anchor had the better noise performance than the seismometer with the conventional anchor at frequencies lower than 0.01Hz.

  Japan Agency for Marine-Earth Science and Technology, 2009, JAMSTEC Report of Research and Development, 2009(2009) (2009), 131 - 139, English

  [Refereed]

  Scientific journal


• Earthquake evidence for along-arc extension in the Mariana Islands

  David S. Heeszel, Douglas A. Wiens, Patrick J. Shore, Hajime Shiobara, Hiroko Sugioka

  Dec. 2008, Geochemistry, Geophysics, Geosystems, 9(12) (12), n/a - n/a, English

  [Refereed]

  Scientific journal


• Double seismic discontinuities at the base of the mantle transition zone near the Mariana slab

  Rigobert Tibi, Douglas A. Wiens, Hajime Shiobara, Hiroko Sugioka, Xiaohui Yuan

  Aug. 2007, GEOPHYSICAL RESEARCH LETTERS, 34(16) (16), English

  [Refereed]

  Scientific journal


• Complex mantle flow in the Mariana subduction system: evidence from shear wave splitting

  S. H. Pozgay, D. A. Wiens, J. A. Conder, H. Shiobara, H. Sugioka

  Jul. 2007, Geophysical Journal International, 170(1) (1), 371 - 386, English

  [Refereed]

  Scientific journal


• Topography of the mantle discontinuities beneath the South Pacific superswell as inferred from broadband waveforms on seafloor

  D. Suetsugu, H. Shiobara, H. Sugioka, Y. Fukao, T. Kanazawa

  Mar. 2007, PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 160(3-4) (3-4), 310 - 318, English

  [Refereed]

  Scientific journal


• Atmospheric pressure change associated with the 2003 Tokachi-Oki earthquake

  Shingo Watada, Takashi Kunugi, Kenji Hirata, Hiroko Sugioka, Kiwamu Nishida, Shoji Sekiguchi, Jun Oikawa, Yoshinobu Tsuji, Hiroo Kanamori

  Dec. 2006, Geophysical Research Letters, 33(24) (24), 33, English

  [Refereed]

  Scientific journal


• New discoveries in dynamics of an M8 earthquake-phenomena and their implications from the 2003 Tokachi-oki earthquake using a long term monitoring cabled observatory

  Hitoshi Mikada, Kyohiko Mitsuzawa, Hiroyuki Matsumoto, Tomoki Watanabe, Shigehiko Morita, Riyo Otsuka, Hiroko Sugioka, Toshitaka Baba, Eiichiro Araki, Kiyoshi Suyehiro

  Oct. 2006, Tectonophysics, 426(1-2) (1-2), 95 - 105, English

  [Refereed]

  Scientific journal


• Three-dimensional shear wave structure beneath the Philippine Sea from land and ocean bottom broadband seismograms

  Takehi Isse, Kazunori Yoshizawa, Hajime Shiobara, Masanao Shinohara, Kazuo Nakahigashi, Kimihiro Mochizuki, Hiroko Sugioka, Daisuke Suetsugu, Satoko Oki, Toshihiko Kanazawa, Kiyoshi Suyehiro, Yoshio Fukao

  Jun. 2006, Journal of Geophysical Research: Solid Earth, 111(B6) (B6), doi:10.102 - n/a, English

  [Refereed]

  Scientific journal


• Shear-wave splitting in the Mariana trough—a relation between back-arc spreading and mantle flow?

  T. Volti, A. Gorbatov, H. Shiobara, H. Sugioka, K. Mochizuki, Y. Kaneda

  Apr. 2006, Earth and Planetary Science Letters, 244(3-4) (3-4), 566 - 575, English

  [Refereed]

  Scientific journal


• High temperature anomalies oceanward of subducting slabs at the 410-km discontinuity

  M OBAYASHI, H SUGIOKA, J YOSHIMITSU, Y FUKAO

  Mar. 2006, Earth and Planetary Science Letters, 243(1-2) (1-2), 149 - 158, English

  [Refereed]

  Scientific journal


• Shear wave speed structure beneath the South Pacific superswell using broadband data from ocean floor and islands

  Takehi Isse, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Kazunori Yoshizawa, Toshihiko Kanazawa, Yoshio Fukao

  2006, Geophysical Research Letters, 33(16) (16), English

  [Refereed]

  Scientific journal


• Depth of the 660-km discontinuity near the Mariana slab from an array of ocean bottom seismographs

  Rigobert Tibi, Douglas A. Wiens, Hajime Shiobara, Hiroko Sugioka, Patrick J. Shore

  2006, Geophysical Research Letters, 33(2) (2), English

  [Refereed]

  Scientific journal


• Mantle Discontinuity Depths Beneath the West Philippine Basin from Receiver Function Analysis of Deep-Sea Borehole and Seafloor Broadband Waveforms

  Suetsugu, D., M. Shinohara, E. Araki, T. Kanazawa, K. Suyehiro, T. Yamada, K. Nakahigashi, H. Shiobara, H. Sugioka, K. Kawai, Y. Fukao

  Oct. 2005, Bulletin of the Seismological Society of America, 95(5) (5), 1947 - 1956, English

  [Refereed]

  Scientific journal


• Submarine volcanic activity, ocean-acoustic waves and internal ocean tides

  Hiroko Sugioka, Yoshio Fukao, Toshiyuki Hibiya

  2005, Geophysical Research Letters, 32(24) (24), English

  [Refereed]

  Scientific journal


• Probing South Pacific mantle plumes with ocean bottom seismographs

  D. Suetsugu, H. Sugioka, T. Isse, Y. Fukao, H. Shiobara, T. Kanazawa, G. Barruol, F. Schindele, D. Reymond, A. Bonneville, E. Debayle

  American Geophysical Union ({AGU}), 2005, Eos, Transactions American Geophysical Union, 86(44) (44), 429 - 429, English

  [Refereed]

  Scientific journal


• Rayleigh wave phase velocity measurements across the Philippine sea from a broad-band OBS array

  T. Isse, H. Shiobara, Y. Fukao, K. Mochizuki, T. Kanazawa, H. Sugioka, S. Kodaira, R. Hino, D. Suetsugu

  Jul. 2004, Geophysical Journal International, 158(1) (1), 257 - 266, English

  [Refereed]

  Scientific journal


• Offshore monitoring system records recent earthquake off Japan's northernmost island

  Omoki Watanabe, Hiroyuki Matsumoto, Hiroko Sugioka, Hitoshi Mikada, Kiyoshi Suyehiro, Riyo Otsuka

  American Geophysical Union ({AGU}), Jan. 2004, Eos, Transactions American Geophysical Union, 85(2) (2), 14 - 14, English

  [Refereed]

  Scientific journal


• Source depth dependence of micro-tsunamis recorded with ocean-bottom pressure gauges: the January 28, 2000 Mw 6.8 earthquake off Nemuro Peninsula, Japan

  Kenji Hirata, Hiroaki Takahashi, Eric Geist, Kenji Satake, Yuichiro Tanioka, Hiroko Sugioka, Hitoshi Mikada

  Mar. 2003, Earth and Planetary Science Letters, 208(3-4) (3-4), 305 - 318, English

  [Refereed]

  Scientific journal


• AOS: The Adaptable Observation System for real-time seafloor observation

  KAWAGUCHI K, MIKADA H, SUGIOKA H, MATSUMOTO H

  2003, 3RD INTERNATIONAL WORKSHOP ON SCIENTIFIC USE OF SUBMARINE CABLES AND RELATED TECHNOLOGY, PROCEEDINGS, 35 - 35, English

  [Refereed]


• Real-time geophysical measurements on the deep seafloor using submarine cable in the southern Kurile subduction zone

  K. Hirata, M. Aoyagi, H. Mikada, K. Kawaguchi, Y. Kaiho, R. Iwase, S. Morita, I. Fujisawa, H. Sugioka, K. Mitsuzawa, K. Suyehiro, H. Kinoshita, N. Fujiwara

  Apr. 2002, IEEE Journal of Oceanic Engineering, 27(2) (2), 170 - 181, English

  [Refereed]

  Scientific journal


• Seismic image and its implications for an earthquake swarm at an active volcanic region off the Miyake-jima–Kozu-shima, Japan

  Shuichi Kodaira, Koichi Uhira, Tsuru Tetsuro, Hiroko Sugioka, Kiyoshi Suyehiro, Yoshiyuki Kaneda

  2002, Geophysical Research Letters, 29(11) (11), English

  [Refereed]

  Scientific journal


• Detection of shallowest submarine seismicity by acoustic coupled shear waves

  Hiroko Sugioka, Yoshio Fukao, Taro Okamoto, Kenji Kanjo

  Jul. 2001, Journal of Geophysical Research: Solid Earth, 106(B7) (B7), 13485 - 13499, English

  [Refereed]

  Scientific journal


• Volcanic events associated with an enigmatic submarine earthquake

  H. Sugioka, Y. Fukao, T. Kanazawa, K. Kanjo

  Oxford University Press ({OUP}), Aug. 2000, Geophysical Journal International, 142(2) (2), 361 - 370, English

  [Refereed]

  Scientific journal


• Anomalously Early First Arrivals to the J-Array from Teleseismic Events.

  Hiroko Sugioka, Yoshio Fukao, Shinichi Sakai

  1996, Journal of Physics of the Earth, 44(6) (6), 687 - 699, English

  [Refereed]

  Scientific journal

• 鬼界カルデラ火山海域での地下比抵抗構造

  小畑拓実, 荒木将允, 廣瀬時, 松野哲男, 南拓人, 臼井嘉哉, 大塚宏徳, 巽好幸, 杉岡裕子, 市原寛, 島伸和

  2024, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2023


• Study of Tide-Induced Electromagnetic Field Response in the Kikai Caldera Sea Area

  柴田悠, 野々山達也, 島伸和, 島伸和, 南拓人, 小畑拓実, 松野哲男, 杉岡裕子, 杉岡裕子, 大塚宏徳, 羽入朋子, 山本揚二朗, 中道治久

  2024, 地球電磁気・地球惑星圏学会総会及び講演会(Web), 156th


• Imaging magma supply system of Kikai caldera by seismic tomography

  山本揚二朗, 伊藤亜妃, 石原靖, 大林政行, 田中聡, 中道治久, 八木原寛, 仲谷幸浩, 杉岡裕子, 大塚宏徳, 松野哲男, 島伸和

  2024, 日本火山学会講演予稿集, 2024


• Hypocenter determinations around Kikai caldera based on semblance analysis of DAS observation data

  中野優, 中島倫也, 荒木英一郎, 杉岡裕子, 伊藤亜妃, 松本浩幸, 横引貴史, 利根川貴志, 小野重明

  2024, 日本火山学会講演予稿集, 2024


• P-wave velocity structure around Kikai Caldera obtained by a global tomography

  大林政行, 吉光淳子, 山本揚二朗, 伊藤亜妃, 石原靖, 田中聡, 中道治久, 八木原寛, 仲谷幸浩, 杉岡裕子, 大塚宏徳, 松野哲男, 島伸和

  2024, 日本火山学会講演予稿集, 2024


• Mapping the spatiotemporal evolution of shallow tremor/VLFE episode commonly using Source-Scanning Algorithm

  根岸幹, 小原一成, 武村俊介, 悪原岳, 山下裕亮, 杉岡裕子, 篠原雅尚

  2023, 日本地震学会秋季大会講演予稿集(CD-ROM), 2023


• P-wave velocity structure beneath central to southern South America using finite-frequency tomography

  近藤優子, 大林政行, 大林政行, 杉岡裕子, 塩原肇, 伊藤亜妃, 篠原雅尚, 岩森光, 木下正高, MILLER Matthew, TASSARA Carlos, OJEDA Javier

  2023, 日本地震学会秋季大会講演予稿集(CD-ROM), 2023


• P-waves recorded by MERMAID floats in the South Pacific

  大林政行, 近藤優子, 吉光淳子, 村上聡, 杉岡裕子, SIMON Joel D

  2023, 日本地震学会秋季大会講演予稿集(CD-ROM), 2023


• Tectonic tremor distribution and migration at Kumano-nada: insights from ocean-bottom seismometer deployment between DONET1 and 2

  悪原岳, 山下裕亮, 杉岡裕子, FARAZI Atikul Haque, 大柳修慧, 伊藤喜宏, 荒木英一郎, 利根川貴志, 辻健, 東龍介, 日野亮太, 望月公廣, 武村俊介, 山田知朗, 篠原雅尚

  2023, 日本地震学会秋季大会講演予稿集(CD-ROM), 2023


• Inter-plate sluggish slip: its initiation and growth

  深尾良夫, 杉岡裕子, 古恵亮, 久保田達也

  2023, 日本地震学会秋季大会講演予稿集(CD-ROM), 2023


• 浅部テクトニック微動の高精度震源決定に向けた手法開発

  悪原岳, 山下裕亮, 杉岡裕子, 篠原雅尚

  2023, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2022


• 鬼界カルデラ火山海底下の三次元比抵抗構造解析

  小畑拓実, 荒木将允, 廣瀬時, 沖園雄希, 松野哲男, 南拓人, 大塚宏徳, 巽好幸, 杉岡裕子, 島伸和, 羽生毅, 田中聡, 市原寛

  2023, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2022


• 屈折法地震波構造探査によって明らかになった鬼界カルデラ火山直下の低速度領域

  長屋暁大, 長屋暁大, 藤江剛, 小平秀一, 田中聡, 山本揚二朗, 杉岡裕子, 杉岡裕子, 宮町宏樹, 松野哲男, 大塚宏徳, 鈴木啓太, 鈴木啓太, 島伸和, 島伸和

  2023, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2022


• Low-velocity anomaly beneath Kikai-caldera submarine volcano, Japan, revealed by seismic refraction survey

  長屋暁大, 藤江剛, 小平秀一, 田中聡, 山本揚二朗, 杉岡裕子, 杉岡裕子, 宮町宏樹, 松野哲男, 大塚宏徳, 鈴木啓太, 島伸和, 島伸和

  2023, 日本地球惑星科学連合大会予稿集(Web), 2023


• Attempt to detect tsunami-generated magnetic variation using machine learning

  美田千璃, 南拓人, 杉岡裕子

  2023, 日本地球惑星科学連合大会予稿集(Web), 2023


• Seismic velocity structure of Kikai caldera based on amphibious passive seismic observations

  山本揚二朗, 伊藤亜妃, 石原靖, 大林政行, 田中聡, 中道治久, 八木原寛, 仲谷幸浩, 杉岡裕子, 大塚宏徳, 松野哲男, 島伸和

  2023, 日本火山学会講演予稿集, 2023 (Web)


• 台風に対する深海の応答:初期結果

  古恵亮, 深尾良夫, 杉岡裕子

  2023, 日本海洋学会大会講演要旨集(Web), 2023


• Development of machine learning model for detection of tsunami magnetic signals in seafloor magnetic data

  美田千璃, 南拓人, 杉岡裕子, 藤浩明

  2023, 地球電磁気・地球惑星圏学会総会及び講演会(Web), 154th


• Imaging a 3-D resistivity structure under the Kikai submarine caldera volcano.

  小畑拓実, 荒木将允, 廣瀬時, 松野哲男, 南拓人, 大塚宏徳, 巽好幸, 杉岡裕子, 杉岡裕子, 市原寛, 島伸和, 島伸和

  2023, 地球電磁気・地球惑星圏学会総会及び講演会(Web), 154th


• The distribution of small faults and acoustic stratigraphy of the alluvium in the Osaka Bay, Japan, revealed by sub-bottom profiler data

  岩波知宏, 大塚宏徳, 松野哲男, 島伸和, 島伸和, 浜橋真理, 佐野守, 佐野守, 井和丸光, 井和丸光, 鈴木啓太, 鈴木啓太, 杉岡裕子, 杉岡裕子

  2023, 日本地質学会学術大会(Web), 130th


• Late Pleistocene to Holocene dynamic basin environment at the Osaka Bay: Stratigraphic expressions of tectonic deformation, sea level fluctuation, and tidal waves

  HAMAHASHI Mari, OTSUKA Hironori, SUZUKI Yoshiaki, ARIMOTO Jun, YAMAMOTO Yuzuru, YAMAMOTO Yuzuru, SEAMA Nobukazu, SEAMA Nobukazu, BOWDEN Stephen, BOWDEN Stephen, MATSUNO Tetsuo, SUGIOKA Hiroko, SUGIOKA Hiroko, SHIMIZU Satoshi, SHIMIZU Satoshi, IWAMARU Hikaru, IWAMARU Hikaru, SANO Mamoru, SANO Mamoru, SUZUKI Keita, SUZUKI Keita, KANEKO Katsuya, KANEKO Katsuya, NAKAHIGASHI Kazuo, TATSUMI Yoshiyuki

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Seismoacoustic signals accompany slow slip events at the front of the Izu-Bonin convergent margin

  SUGIOKA Hiroko, LE BRAS Ronan

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Broadband dispersion analysis of Love waves: a case study in the oldest Pacific Ocean

  KAWANO Yuki, ISSE Takehi, TAKEO Akiko, KAWAKATSU Hitoshi, SHIOBARA Hajime, TAKEUCHI Nozomu, SUGIOKA Hiroko, KIM YoungHee, UTADA Hisashi, LEE Sang-Mook

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Amphibious passive seismic observation at Kikai submarine caldera

  YAMAMOTO Yojiro, ITO Aki, ISHIHARA Yasushi, OBAYASHI Masayuki, TANAKA Satoru, NAKAMICHI Haruhisa, YAKIWARA Hiroshi, NAKATANI Yukihiro, SUGIOKA Hiroko, SUGIOKA Hiroko, OTSUKA Hironori, MATSUNO Tetsuo, SEAMA Nobukazu, SEAMA Nobukazu

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Travel time anomalies in Chile Triple Junction region

  KONDO Yuko, OBAYASHI Masayuki, SUGIOKA Hiroko, SHIOBARA Hajime, ITO Aki, SHINOHARA Masanao, IWAMORI Hikaru, KINOSHITA Masataka, MILLER Matthew, TASSARA Carlos, OJEDA Javier

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Frequent occurrence of “rapid“ aseismic slip events at the Izu-Bonin Trench

  FUKAO Yoshio, KUBOTA Tatsuya, SUGIOKA Hiroko, FURUE Ryo

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Seismological Property and Structure beneath the Seafloor at the Hyuga-nada, Estimated Using Ocean Bottom Seismographs

  SAWAKI Yasunori, YAMASHITA Yusuke, OHYANAGI Shukei, GARCIA Emmanuel Soliman M, ITO Aki, SUGIOKA Hiroko, TAKAHASHI Tsutomu, SHINOHARA Masanao, ITO Yoshihiro

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Po/So waves traveling in the Ontong Java Plateau

  SHITO Azusa, SUETSUGU Daisuke, ISSE Takehi, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Three-year seismic observation by hydrophone floats

  OBAYASHI Masayuki, SUGIOKA Hiroko, SUGIOKA Hiroko, YOSHIMITSU Junko, SIMON Joel D.

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Long-term test for practical mobile tilt observation at the seafloor: temperature coefficient

  塩原肇, 篠原雅尚, 佐藤利典, 伊藤亜妃, 杉岡裕子

  2022, 日本地震学会秋季大会講演予稿集(CD-ROM), 2022


• Seismic velocity structure beneath Kikai-caldera, Japan, from seismic refraction survey

  長屋暁大, 藤江剛, 小平秀一, 田中聡, 山本揚二朗, 杉岡裕子, 杉岡裕子, 宮町宏樹, 松野哲男, 大塚宏徳, 鈴木啓太, 鈴木啓太, 島伸和, 島伸和

  2022, 日本地震学会秋季大会講演予稿集(CD-ROM), 2022


• Deep-sea bore: Trench-slope ascent of discontinuities in current speed, water temperature and pressure

  深尾良夫, 杉岡裕子, 塩原肇, 伊藤亜妃, KIM Taewoon, 古恵亮

  2022, 日本地震学会秋季大会講演予稿集(CD-ROM), 2022


• The Explosive Hunga Tonga Eruption observed by an Array of Hydroacoustic MERMAID Floats

  大林政行, 吉光淳子, 杉岡裕子, SIMON Joel D, YONG Yu

  2022, 日本地震学会秋季大会講演予稿集(CD-ROM), 2022


• Seismic velocity structure beneath Kikai-caldera, Japan, from seismic refraction survey

  長屋暁大, 藤江剛, 小平秀一, 田中聡, 山本揚二朗, 杉岡裕子, 宮町宏樹, 松野哲男, 大塚宏徳, 鈴木啓太, 鈴木啓太, 島伸和, 島伸和

  2022, 日本火山学会講演予稿集, 2022


• Long-term seafloor seismic observation at the Chile triple junction

  伊藤亜妃, 塩原肇, 杉岡裕子, 篠原雅尚, 岩森光, 木下正高, MILLER Matthew, TASSARA Carlos, OJEDA Javier

  2022, 日本地球惑星科学連合大会予稿集(Web), 2022


• Observation of shallow slow earthquake activity from December 2020 southeast off the Kii Peninsula using dense ocean bottom seismometer array.

  根岸幹, 小原一成, 武村俊介, 悪原岳, 山下裕亮, 杉岡裕子, 篠原雅尚

  2022, 日本地震学会秋季大会講演予稿集(CD-ROM), 2022


• Relationship between slow earthquakes and temporal changes in seismological structure in the shallow Nankai subduction zone

  利根川貴志, 悪原岳, 山下裕亮, 杉岡裕子, 篠原雅尚, 武村俊介, 辻健

  2022, 日本地震学会秋季大会講演予稿集(CD-ROM), 2022


• Characteristics of Kikai caldera volcanic product revealed by seafloor drilling samples

  Nakaoka Reina, Kaneko Katsuya, Seama Nobukazu, Suzuki Keiko, Kiyosugi Koji, Hanyu Takeshi, Yamamoto Yuzuru, Matsuno Tetsuo, Satoshi Shimizu, Sugioka Hiroko, Yoshiyuki Tatsumi

  Kikai Caldera volcano has repeatedly erupted in large scale eruptions such as the Kikai Akahoya eruption 7,300 years ago and the Kikai Tozurahara eruption 95,000 years ago, and detailed eruption history can be studied by combining seafloor and on-land surveys.In this study, core samples were collected by the SCORE program of CHIKYU based on the subsurface structure revealed by seismic reflection surveys of large eruptive ejecta on the seafloor, which are still largely unknown.The chemical composition of the volcanic glass was analyzed and compared with subaerial deposits, and it was found that the two large-scale eruptive ejecta are thickly deposited on the seafloor as well, and that the Kikai Akahoya product is divided into two units on the seafloor as well.In addition, the chemical compositional characteristics of volcanic glass in piston core samples from a wide area around the Kikai caldera suggest that the Kikai Akahoya product may have become less accessible to distant sites as the eruption progressed.

  GEOCHEMICAL SOCIETY OF JAPAN, 2022, Abstracts of Annual Meeting of the Geochemical Society of Japan, 69, 95, Japanese


• Surface wave envelope fitting for S wave velocity structure of the oceanic upper mantle

  NAGAI Haruka, TAKEUCHI Nozomu, KAWAKATSU Hitoshi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki, UTADA Hisashi

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Preliminary results of ocean bottom pressure observation around Kikai submarine caldera, SW Japan

  ASAI Yuko, SEAMA Nobukazu, HANYU Tomoko, MATSUNO Tetsuo, HIROSE Hitoshi, MINAMI Takuto, SUGIOKA Hiroko

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Characteristics of seismic signals associated with the hydrothermal system beneath a giant submarine caldera

  SUGIOKA Hiroko

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Moment tensor inversion of shallow very low-frequency earthquakes in the northern Ryukyu subduction zone and the Hyuga-nada region

  ITO Aki, SUGIOKA Hiroko, NAKANO Masaru, YAMASHITA Yusuke, SHINOHARA Masanao, TAKAHASHI Tsutomu, SUETSUGU Daisuke, TONEGAWA Takashi

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Seismic structure of the lithosphere-asthenosphere system beneath the oldest seafloor revealed by the broadband dispersion analysis of the Oldest-1 Array

  KAWANO Yuki, ISSE Takehi, TAKEO Akiko, KAWAKATSU Hitoshi, SHIOBARA Hajime, TAKEUCHI Nozomu, SUGIOKA Hiroko, KIM YoungHee, UTADA Hisashi, LEE Sang-Mook

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Shallow tremor activity in the Hyuga-nada revealed by the seafloor observation of “Science of Slow earthquakes”

  YAMASHITA Yusuke, SHINOHARA Masanao, SUGIOKA Hiroko, ITO Aki, TAKAHASHI Tsutomu, SUETSUGU Daisuke

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Application of the wavefield decomposition for the Oldest-1 array data

  KAWAKATSU Hitoshi, ISSE Takehi, TAKEUCHI Nozomu, SHIOBARA Hajime, SUGIOKA Hiroko, KIM YoungHee, UTADA Hisashi, LEE Sang-Mook

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Two-year seismic observation by hydrophone floats

  OBAYASHI Masayuki, SUGIOKA Hiroko, YOSHIMITSU Junko

  2021, 日本地球惑星科学連合大会予稿集(Web), 2021


• Detection of slip events amid the transitional regime between the unstable seismic and stable sliding regimes

  深尾良夫, 久保田達也, 杉岡裕子, 伊藤亜妃, 利根川貴志, 塩原肇, 山下幹也, 齊藤竜彦

  2021, 日本地震学会秋季大会講演予稿集(CD-ROM), 2021


• A study on the Application of 3-D Travel-Time Prediction to the Bayesloc multiple-event lolation

  近藤優子, 杉岡裕子, 大林政行

  2021, 日本地震学会秋季大会講演予稿集(CD-ROM), 2021


• 海底面での機動的傾斜観測実現に向けた房総半島沖での長期試験観測

  塩原肇, 佐藤利典, 金慧貞, 川野由貴, 永井はるか, 伊藤亜妃, 杉岡裕子

  2021, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2021


• 海域機動地震観測による熊野灘のスロー地震調査

  悪原岳, 杉岡裕子, 山下裕亮, 大柳修慧, FARAZI Atikul Haque, 伊藤喜宏, 日野亮太, 東龍介, 荒木英一郎, 利根川貴志, 辻健, 望月公廣, 山田知朗, 武村俊介, 篠原雅尚

  2021, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2021


• Surface wave fitting for Vs structure of the oceanic crust and upper mantle-Development of the initial model using shorter period waveforms-

  永井はるか, 竹内希, 川勝均, 塩原肇, 一瀬建日, 杉岡裕子, 伊藤亜妃, 歌田久司

  2021, 日本地震学会秋季大会講演予稿集(CD-ROM), 2021


• DAS observations of earthquakes and airgun signals around Kikai caldera

  中野優, 杉岡裕子, 荒木英一郎, 中島倫也, 伊藤亜妃, 松本浩幸, 横引貴史, 利根川貴志, 山本揚二朗, 木村俊則, 藤江剛, 田中聡

  2021, 日本地震学会秋季大会講演予稿集(CD-ROM), 2021


• Long-term test for practical mobile tilt observation at the seafloor off Boso Peninsula: 2

  塩原肇, 佐藤利典, KIM HyeJeong, 川野由貴, 永井はるか, 伊藤亜妃, 篠原雅尚, 杉岡裕子

  2021, 日本地震学会秋季大会講演予稿集(CD-ROM), 2021


• Continuous image transmission from sea surface by using the Wave Glider

  田中聡, 杉岡裕子, 浜野洋三, 市原美恵

  2021, 日本火山学会講演予稿集, 2021


• DAS observations of earthquakes and airgun signals around Kikai caldera

  中野優, 杉岡裕子, 荒木英一郎, 中島倫也, 伊藤亜妃, 松本浩幸, 横引貴史, 利根川貴志, 山本揚二朗, 木村俊則, 藤江剛, 田中聡

  2021, 日本火山学会講演予稿集, 2021


• 日本海溝海底地震津波観測網S-netで記録されたナガスクジラ(Balaenoptera physalus)の鳴音の特徴と傾向

  吉田林太郎, 中東和夫, 中村玄, 許正憲, 杉岡裕子, 松尾行雄, 植平賢司

  2021, 日本水産学会大会講演要旨集(CD-ROM), 2021


• Development of a Compact Deepsea Video Camera for Testing the New Autonomous Ocean Bottom Seismometer Development

  塩原肇, 杉岡裕子, 太田豊宣, 大西信人

  2021, 東京大学地震研究所技術研究報告, (26) (26)


• Persistent Long-Period Signals Recorded by an OBS Array in the Western-Central Pacific: Activity of Ambrym Volcano in Vanuatu

  Kawano Yuki, Isse Takehi, Takeo Akiko, Kawakatsu Hitoshi, Suetsugu Daisuke, Shiobara Hajime, Sugioka Hiroko, Ito Aki, Ishihara Yasushi, Tanaka Satoru, Obayashi Masayuki, Tonegawa Takashi, Yoshimitsu Junko

  2020, Geophysical Research Letters, 47(19) (19)


• Three dimensional shear wave structure in the upper mantle beneath the old Pacific plate

  一瀬建日, 川勝均, 塩原肇, 竹内希, 杉岡裕子, KIM YoungHee, 歌田久司, LEE Sang-Mook, 吉澤和範

  2020, 日本地震学会秋季大会講演予稿集(CD-ROM), 2020


• Seismic structure of the lithosphere-asthenosphere system beneath the oldest seafloor-the broadband dispersion analysis of the Oldest-1 (Pacific Array) data

  川野由貴, 一瀬建日, 竹尾明子, 川勝均, 塩原肇, 竹内希, 杉岡裕子, KIM YoungHee, 歌田久司, LEE Sang-Mook

  2020, 日本地震学会秋季大会講演予稿集(CD-ROM), 2020


• 鬼界海底カルデラ火山における地球物理学的観測及び地質岩石学的調査

  羽生毅, 田中聡, 伊藤亜妃, 山本揚二朗, 宮崎隆, 浜田盛久, TEJADA Maria Luisa G., 上木賢太, VAGLAROV Bogdan S., MCINTOSH Iona, 小平秀一, 末次大輔, 田村芳彦, 藤江剛, 堀高峰, 三浦誠一, 多田訓子, 原口悟, 中島倫也, 中岡礼奈, 杉岡裕子, 松野哲男, 清杉孝司, 大塚宏徳, 鈴木桂子, 岡本信行, 金子克哉, 菊池瞭平, 角想子, 織井大樹, 荒木将允, 島伸和, 巽好幸, 浜野洋三

  2020, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2020


• 鬼界海底巨大カルデラ火山における二重カルデラ形成過程の解明-新青丸KS-19-17航海概要報告-

  島伸和, 清杉孝司, 中岡礼奈, 松野哲男, 金子克哉, 清水賢, 鈴木桂子, 岡本信行, 羽入朋子, 井和丸光, 阿部俊輔, 佐野守, 木村純一, 杉岡裕子, 巽好幸, 羽生毅, 新谷毅, 益田晴恵, 亀尾桂, 沖野郷子, 榎正憲, 石塚治

  2020, 海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2020


• Topography on the mantle discontinuities beneath the Ontong Java Plateau

  SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko, KOBAYASHI Takumi

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• Detection of hydroacoustic signals associated with the 2015 Torishima volcanic tsunami earthquake

  SUGIOKA Hiroko, NEMOTO Natsuo

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• Tectonic tremors in southern Chile, observed in three space-timewindows

  IDE Satoshi, SAEZ Miguel, RUIZ Sergio, SUGIOKA Hiroko, MILLER Matthew

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• Seismic monitoring by autonomous floats to image Earth’s interior

  OBAYASHI Masayuki, SUGIOKA Hiroko, HELLO Yann, SIMONS Frederik J, CHEN Yongshun J, NOLET Guust

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• The Oldest Array: Japan-Korea Pacific Array collaboration to study the lithosphere-asthenosphere system below the oldest part of the Pacific Ocean

  SHIOBARA Hajime, UTADA Hisashi, KIM Seung-Sep, KIM YoungHee, BABA Kiyoshi, ISSE Takehi, KIM Hogyum, KIM HyeJeong, SUGIOKA Hiroko, TAKEUCHI Nozomu, KAWANO Yuki, KAWAKATSU Hitoshi, LEE Sang-Mook

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• Three dimensional shear wave structure in the upper mantle beneath the oldest Pacific plate

  ISSE Takehi, KAWAKATSU Hitoshi, SHIOBARA Hajime, TAKEUCHI Nozomu, SUGIOKA Hiroko, KIM Younghee, UTADA Hisashi, LEE Sang-Mook, YOSHIZAWA Kazunori

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• P Velocity Heterogeneities in the Upper Mantle beneath the Northwestern Pacific

  TAKEUCHI Nozomu, KAWAKATSU Hitoshi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki, UTADA Hisashi

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• The seismic structure of the oldest Pacific: Preliminary results from the broadband Rayleigh-wave dispersion analysis of the Pacific Array, Oldest-1

  KAWANO Yuki, ISSE Takehi, TAKEO Akiko, KAWAKATSU Hitoshi, SHIOBARA Hajime, TAKEUCHI Nozomu, SUGIOKA Hiroko, KIM YoungHee, UTADA Hisashi, LEE Sang-Mook

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• Detection of volcanic earthquakes and estimation of internal attenuation structure beneath the Kikai submarine caldera

  SETO Yasutomo, SUGIOKA Hiroko, TAKAHASHI Tsutomu, YAMAMOTO Yojiro

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• Strain release by “rapid“ aseismic slip at the Izu-Bonin trench

  FUKAO Yoshio, SUGIOKA Hiroko, ITO Aki, TONEGAWA Takashi, YAMASHITA Mikiya, SHIOBARA Hajime, KUBOTA Tatsuya, SAITO Tatsuhiko

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• Repeating activity of shallow low-frequency tremor in Hyuga-nada

  YAMASHITA Yusuke, SHINOHARA Masanao, SUGIOKA Hiroko, ITO Aki, TAKAHASHI Tsutomu, SUETSUGU Daisuke

  2020, 日本地球惑星科学連合大会予稿集(Web), 2020


• 日本海溝海底地震津波観測網S-netに記録されたナガスクジラ(Balaenoptera physalus)の鳴音に関する研究

  吉田林太郎, 中東和夫, 中村玄, 許正憲, 杉岡裕子, 松尾行雄, 植平賢司

  2020, 日本水産学会大会講演要旨集, 2020


• Installation of a floating hydrophone system within the SOFAR channel

  SUGIOKA Hiroko, OBAYASHI Masayuki

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• Finite frequency S wave tomography model beneath the Ontong Java Plateau using data recorded by broadband ocean bottom seismographs

  HORIUCHI Misaki, SUGIOKA Hiroko, OBAYASHI Masayuki, SUETSUGU Daisuke, SHIOBARA Hajime, ITO Aki, ISHIHARA Yasushi, TANAKA Satoru, ISSE Takehi, TONEGAWA Takashi, YOSHIMITSU Junko, KOBAYASHI Takumi

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• Seismic monitoring by an autonomous robotic float equipped with a hydrophone: MERMAID

  OBAYASHI Masayuki, SUGIOKA Hiroko

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• Shear wave structure of the upper mantle beneath the Ontong Java Plateau

  ISSE Takehi, SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko, KOBAYASHI Takumi, YOSHIZAWA Kazunori

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• Drifting float measurement of pressure change by tsunami

  OBAYASHI Masayuki, WATADA Shingo, SUGIOKA Hiroko

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• New Constraints on Seismological Structures of the Oceanic Asthenosphere

  TAKEUCHI Nozomu, KAWAKATSU Hitoshi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki, UTADA Hisashi

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• Summary of Kikai submarine caldera researches conducted by KOBEC (Kobe Ocean-Bottom Exploration Center)

  SEAMA Nobukazu, MATSUNO Tetsuo, KIYOSUGI Koji, SHIMIZU Satoshi, NAKAOKA Reina, SUZUKI-KAMATA Keiko, SETO Yasutomo, SANO Mamoru, MORITA Yuiko, IWAMARU Hikaru, MOROZUMI Haruhisa, HORIUCHI Misaki, NISHIMURA Kimihiro, ICHIHARA Hiroshi, HAYASHI Kazuki, HIROSE Toki, KANEKO Katsuya, YAMAGUCHI Hiroto, OKIZONO Yuki, SUGIOKA Hiroko, NAKAHIGASHI Kazuo, NAKAHIGASHI Kazuo, YAMAMOTO Yojiro, KODA Tatsuya, KODAIRA Shuichi, KODAIRA Shuichi, TATSUMI Yoshiyuki

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• Geophysical-petrological studies of the Chile triple junction and their significance: MIRAI research cruise MR-1806Leg2

  KINOSHITA Masataka, KINOSHITA Masataka, IWAMORI Hikaru, IWAMORI Hikaru, NISHIKAWA Tomoaki, ANMA Ryo, LAGARRIGUE Sofia, ABE Natsue, YOKOYAMA Yuka, ESPINOSA Andres Veloso, CORTES Alessandra Isabella Rivero, PRADO Gabriela Pia Lazcano, BASCUNAN Ivan Andres Arriagada, HARAGUCHI Satoru, OTA Kosuke, ORIHASHI Yuji, NAKAO Kaishi, NUMATA Shogo, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, PEREZ-ESTAY Nicolas

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• オントンジャワ海台マントルP波速度構造

  大林政行, 吉光淳子, 末次大輔, 塩原肇, 杉岡裕子, 伊藤亜妃, 石原靖, 田中聡, 一瀬建日, 利根川貴志, 小林拓史

  2019, ブルーアースサイエンス・テク要旨集, 2019


• オントンジャワ海台上部マントルS波速度構造

  一瀬建日, 末次大輔, 塩原肇, 杉岡裕子, 伊藤亜妃, 石原靖, 田中聡, 大林政行, 利根川貴志, 吉光淳子, 小林拓史

  2019, ブルーアースサイエンス・テク要旨集, 2019


• Shear velocity and attenuation of the mantle beneath the Ontong Java Plateau based on an analysis of multiple ScS waves

  SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko, KOBATASHI Takumi

  2019, 日本地震学会秋季大会講演予稿集(CD-ROM), 2019


• Configuration and structure of the Philippine Sea plate off Boso, Japan

  ITO Aki, TONEGAWA Takashi, UCHIDA Naoki, YAMAMOTO Yojiro, SUETSUGU Daisuke, HINO Ryota, SUGIOKA Hiroko, OBANA Koichiro, NAKAHIGASHI Kazuo, SHINOHARA Masanao

  2019, 日本地震学会秋季大会講演予稿集(CD-ROM), 2019


• 鬼界カルデラのMT観測データの解析

  廣瀬時, 松野哲男, 松野哲男, 島伸和, 島伸和, 沖園雄希, 市原寛, 杉岡裕子, 杉岡裕子, 巽好幸, 巽好幸

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• 鬼界カルデラ下の3次元電気比抵抗構造探査

  松野哲男, 松野哲男, 廣瀬時, 沖園雄希, 島伸和, 島伸和, 市原寛, 杉岡裕子, 杉岡裕子, 巽好幸, 巽好幸

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• 海底地震観測を用いた鬼界カルデラで発生する地震活動

  瀬戸康友, 杉岡裕子, 山本揚二朗, 高橋努

  2019, 日本地球惑星科学連合大会予稿集(Web), 2019


• オントンジャワ海台における地震波アレイ解析:地震波干渉法による予備的解析

  川野由貴, 一瀬建日, 竹尾明子, 川勝均, 末次大輔, 塩原肇, 杉岡裕子, 伊藤亜妃, 石原靖, 田中聡, 大林政行, 利根川貴志, 吉光淳子, 小林拓史

  2019, 日本地震学会秋季大会講演予稿集(CD-ROM), 2019


• 2015年Mw6.0小笠原海溝地震の近地アレー観測:前震-本震-海底変動-津波発生-余効変動

  深尾良夫, 杉岡裕子, 伊藤亜妃, 山下幹也, 山下幹也, 利根川貴志, 塩原肇, 久保田達矢, 齊藤竜彦

  2019, 日本地震学会秋季大会講演予稿集(CD-ROM), 2019


• オントンジャワ海台の上部マントルS波速度構造

  一瀬建日, 末次大輔, 塩原肇, 杉岡裕子, 伊藤亜妃, 石川晃, 川野由貴, 吉澤和範, 石原靖, 田中聡, 大林政行, 利根川貴志, 吉光淳子, 小林拓史

  2019, 日本地震学会秋季大会講演予稿集(CD-ROM), 2019


• 2015年Mw6.0小笠原海溝地震の近地アレー観測:津波発生場の海底水圧変動モデリング

  久保田達矢, 齊藤竜彦, 深尾良夫, 杉岡裕子, 伊藤亜妃, 山下幹也, 山下幹也, 利根川貴志, 塩原肇

  2019, 日本地震学会秋季大会講演予稿集(CD-ROM), 2019


• 次世代観測へ向けた自律動作方式の高性能広帯域海底地震計:NX-2G

  塩原肇, 伊藤亜妃, 杉岡裕子, 篠原雅尚

  2019, 日本地震学会秋季大会講演予稿集(CD-ROM), 2019


• <一般研究集会(課題番号: 29K-07)>スロー地震国際研究集会2017

  杉岡, 裕子

  京都大学防災研究所, Sep. 2018, 京都大学防災研究所年報. A, 61(A) (A), 119 - 121, Japanese


• Characteristics of fin whale call recorded in the off the coast of Kushiro ocean bottom seismic observation system

  吉田 林太郎, 中東 和夫, 中村 玄, 許 正憲, 杉岡 裕子, 松尾 行雄

  日本音響学会, 23 Aug. 2018, 聴覚研究会資料 = Proceedings of the auditory research meeting, 48(6) (6), 615 - 617, Japanese


• Determination of Intrinsic Attenuation in the Oceanic Lithosphere-Asthenosphere System

  TAKEUCHI Nozomu, KAWAKATSU Hitoshi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki, UTADA Hisashi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018(6370) (6370), 1593 - +, English, International magazine


• P-wave velocity tructures beneath Ontong Java Plateau

  OBAYASHI Masayuki, YOSHIMITSU Junko, SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, TANAKA Satoru, TONEGAWA Takashi, KOBAYASHI Takumi

  2018, 日本地震学会秋季大会講演予稿集(CD-ROM), 2018


• Upper mantle structure beneath the Pacific Ocean revealed from seafloor and land broadband seismic observations

  ISSE Takehi, SHIOBARA Hajime, KAWAKATSU Hitoshi, YOSHIZAWA Kazunori, SUGIOKA Hiroko, ITO Aki, SUETSUGU Daisuke

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Shear wave splitting observed in the Ontong Java Plateau and adjacent regions

  TANAKA Satoru, SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko, KOBAYASHI Takumi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• sPL waves observed by the OJP array in the Ontong Java Plateau

  KOBAYASHI Minoru, UKAWA Motoo, FUKAO Yoshio, SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko, KOBAYASHI Takumi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Retrieval of converted phases from shallow structure of the Ontong Java Plateau

  TONEGAWA Takashi, SUETSUGU Daisuke, MIURA Seiichi, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, YOSHIMITSU Junko, KOBAYASHI Takumi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Generation and propagation of T-waves associated with underwater volcanic activities

  SUGIOKA Hiroko, LE BRAS Ronan

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Shear wave upper mantle structure beneath the Ontong Java Plateau

  ISSE Takehi, SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko, KOBAYASHI Takumi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Noise removal from vertical component seismograms recorded by broadband ocean bottom seismometers

  KAWANO Yuki, ISSE Takehi, KAWAKATSU Hitoshi, SHIOBARA Hajime, SUGIOKA Hiroko

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Toward complete tomography of the Earth’s interior with floating robotic acoustic sensors in the oceans: the EarthScope-Oceans

  OBAYASHI Masayuki, SUGIOKA Hiroko, SHIOBARA Hajime

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Seismic attenuation in the mantle beneath the Ontong Java Plateau from multiple ScS waves

  SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, TANAKA Satoru, OBAYASHI Masayuki, TONEGAWA Takashi, YOSHIMITSU Junko, KOBAYASHI Takumi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Multifrequency P-wave tomography of Ontong Java Plateau

  OBAYASHI Masayuki, YOSHIMITSU Junko, SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, ISHIHARA Yasushi, TANAKA Satoru, TONEGAWA Takashi, KOBAYASHI Takumi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• The OJP array: seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau

  Suetsugu Daisuke, Shiobara Hajime, Sugioka Hiroko, Tada Noriko, Ito Aki, Isse Takehi, Baba Kiyoshi, Ichihara Hiroshi, Ota Toyonobu, Ishihara Yasushi, Tanaka Satoru, Obayashi Masayuki, Tonegawa Takashi, Yoshimitsu Junko, Kobayashi Takumi, Utada Hisashi

  2018, JAMSTEC Report of Research and Development, 26


• Geodesy and broadband seismology from a mobile ocean bottom observation

  SHIOBARA Hajime, ITO Aki, SUGIOKA Hiroko, SHINOHARA Masanao

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Development of infrasound monitoring system mounted on Wave Glider

  ICHIHARA Mie, SUGIOKA Hiroko, NISHIDA Kiwamu, TAKEO Minoru, HAMANO Yozo

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Remote monitoring of island volvanic activities using an autonomous vehicle of the Wave Glider

  SUGIOKA Hiroko, HAMANO Yozo, ICHIHARA Mie, TADA Noriko, NISHIDA Kiwamu, TAKEO Minoru

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• The characteristics of seismic stratigraphic facies of Kikai submarine caldera and off the southern Kyusyu

  SHIMIZU Satoshi, SHIMIZU Satoshi, IWAMARU Hikaru, IWAMARU Hikaru, SEAMA Nobukazu, MATSUNO Tetsuo, ICHIHARA Hiroshi, ICHIHARA Hiroshi, SANO Mamoru, SANO Mamoru, SUGIOKA Hiroko, NAKAHIGASHI Kazuo, NAKAHIGASHI Kazuo, YAMAMOTO Yojiro, NISHIMURA Kimihiro, FURUKAWA Yuka, HORIUCHI Misaki, HIROSE Toki, SETO Yasutomo, TATSUMI Yoshiyuki

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Integrated marine investigations of Kikai Caldera, SW Japan

  MATSUNO Tetsuo, TATSUMI Yoshiyuki, SEAMA Nobukazu, SUZUKI-KAMATA Keiko, ICHIHARA Hiroshi, ICHIHARA Hiroshi, KIYOSUGI Koji, NAKAOKA Reina, SHIMIZU Satoshi, SANO Mamoru, IWAMARU Hikaru, MOROZUMI Haruhisa, SUGIOKA Hiroko, NAKAHIGASHI Kazuo, NAKAHIGASHI Kazuo, YAMAMOTO Yojiro, HAYASHI Kazuki, NISHIMURA Kimihiro, FURUKAWA Yuka, HORIUCHI Misaki, NAKATA Daichi, NAKAMURA Ryoto, TOKI Hirose, SETO Yasutomo, OSHIGE Atsuhiro, TAKIZAWA Hideaki, CHIBA Tatsuro, KODAIRA Shuichi

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• 釧路沖に設置されたケーブル式海底地震計に記録されたナガスクジラの鳴音

  吉田林太郎, 中東和夫, 中村玄, 許正憲, 杉岡裕子

  2018, 日本水産学会大会講演要旨集, 2018


• P波波形を用いた海洋アセノスフェアの構造推定

  竹内希, 川勝均, 塩原肇, 一瀬建日, 杉岡裕子, 伊藤亜妃, 歌田久司

  2018, 日本地震学会秋季大会講演予稿集(CD-ROM), 2018


• 浅部低周波微動のサイズ-頻度分布

  中野優, 矢部優, 杉岡裕子, 井出哲

  2018, 日本地震学会秋季大会講演予稿集(CD-ROM), 2018


• 小笠原海溝沿いの地震を伴う海底地殻変動

  深尾良夫, 伊藤亜紀, 山下幹也, 利根川貴史, 杉岡裕子, 塩原肇, 東野陽子

  2018, 日本地震学会秋季大会講演予稿集(CD-ROM), 2018


• Geophysical observations and landing survey at Nishinoshima volcano

  武尾実, 大湊隆雄, 前野深, 篠原雅尚, 馬場聖至, 渡邉篤志, 市原美恵, 西田究, 金子隆之, 安田敦, 杉岡裕子, 浜野洋三, 多田訓子, 中野俊, 吉本充宏, 高木朗充, 長岡優

  2018, 海洋理工学会誌(Web), 24(1) (1)


• 深海域における海洋外部重力波の伝播

  利根川貴志, 深尾良夫, 西田究, 塩原肇, 杉岡裕子, 伊藤亜紀, 山下幹也

  2018, 日本海洋学会大会講演要旨集, 2018


• 釧路沖ケーブル式地震計に記録された大型鯨類鳴音の音響学的特性

  吉田林太郎, 中東和夫, 中村玄, 許正憲, 杉岡裕子, SIROVIC Ana, MCDONALD Mark

  2018, 海洋音響学会研究発表会講演論文集, 2018


• OJP arrayのBBOBS記録を用いた浅部構造からの変換波抽出

  利根川貴志, 末次大輔, 塩原肇, 杉岡裕子, 伊藤亜妃, 一瀬建日, 石原靖, 田中聡, 大林政行, 吉光淳子

  2018, ブルーアースサイエンス・テク要旨集, 2018


• オントンジャワ海台の海底・海洋島における地震・電磁気観測

  末次大輔, 塩原肇, 杉岡裕子, 多田訓子, 伊藤亜妃, 一瀬建日, 馬場聖至, 市原寛, 市原寛, 太田豊宣, 石原靖, 田中聡, 大林政行, 利根川貴志, 吉光淳子, 小林拓史, 歌田久司

  2018, ブルーアースサイエンス・テク要旨集, 2018


• 火山性津波地震のメカニズム Part II:津波解析

  三反畑修, 綿田辰吾, 佐竹健治, 深尾良夫, 杉岡裕子, 伊藤亜妃, 塩原肇

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• 火山性津波地震のメカニズム Part I 概要

  深尾良夫, 三反畑修, 杉岡裕子, 伊藤亜紀, 塩原肇, 綿田辰吾, 佐竹健治

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• ISC走時データを用いたP波,S波トモグラフィーの相違に対する考察

  堀内美咲, 杉岡裕子, 大林政行

  2018, 日本地球惑星科学連合大会予稿集(Web), 2018


• Characteristics of fin whale call recorded in the off the coast of Kushiro ocean bottom seismic observation system

  吉田林太郎, 中東和夫, 中村玄, 許正憲, 杉岡裕子, 松尾行雄

  電子情報通信学会, 2018, 電子情報通信学会技術研究報告, 118(190(EA2018 28-53)) (190(EA2018 28-53)), 157 - 159, Japanese


• Toward standardization of slow earthquake catalog -Development of database website-

  Masayuki Kano, Naofumi Aso, Satoshi Annoura, Ryuta Arai, Yoshihiro Ito, Noriko Kamaya, Julie Maury, Mamoru Nakamura, Takuya Nishimura, Koichiro Obana, Hiroko Sugioka, Ryota Takagi, Tsutomu Takahashi, Akiko Takeo, Yusuke Yamashita, Takanori Matsuzawa, Satoshi Ide, Kazushige Obara

  Dec. 2017, 2017 American Geophysical Union Fall Meeting, 2017, English


• Development of the autonomous BBOBS-NX (NX-2G): preliminary test report

  SHIOBARA Hajime, ITO Aki, SUGIOKA Hiroko, SHINOHARA Masanao

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• The excitation location of external gravity waves traveling across the Pacific Ocean and its seasonal variation

  TONEGAWA Takashi, FUKAO Yoshio, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, YAMASHITA Mikiya

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• Near-source detection of lowest and very high modes of internal tide in comparison with the JCOPE-T ocean circulation model

  FUKAO Yoshio, MIYAMA Toru, TONO Yoko, SUGIOKA Hiroko, ITO Aki, SHIOBARA Hajime, YAMASHITA Mikiya, VARLAMOV Sergey, MIYAZAWA Yasumasa

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• Ray tracing for dispersive tsunamis and estimation of initial sea-surface displacement: Application to the 2015 Smith Caldera earthquake

  SANDANBATA Osamu, WATADA Shingo, SATAKE Kenji, FUKAO Yoshio, SUGIOKA Hiroko, ITO Aki, SHIOBARA Hajime

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• Upper mantle structure beneath the Ontong Java Plateau from measurements of body wave differential travel times

  KOBAYASHI Takumi, SUETSUGU Daisuke, OBAYASHI Masayuki, SUGIOKA Hiroko

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• Regional-scale variation of the lithosphere-asthenosphere system beneath the old Pacific ocean basin revealed by NOMan seafloor array observation

  TAKEO Akiko, KAWAKATSU Hitoshi, ISSE Takehi, NISHIDA Kiwamu, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, UTADA Hisashi

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• Continuous seismic monitoring of Nishinoshima volcano, Izu-Ogasawara, by using long-term ocean bottom seismometers

  SHINOHARA Masanao, ICHIHARA Mie, SAKAI Shin’ichi, YAMADA Tomoaki, TAKEO Minoru, SUGIOKA Hiroko, NAGAOKA Yutaka, TAKAGI Akimichi, MORISHITA Taisei, ONO Tomozo, NISHIZAWA Azusa

  2017, Earth, Planets and Space (Web), 69(Nov) (Nov), 1 - 9, English


• Upper mantle structure beneath the Pacific Ocean revealed by land and seafloor broadband observations

  ISSE Takehi, SHIOBARA Hajime, YOSHIZAWA Kazunori, KAWAKATSU Hitoshi, SUGIOKA Hiroko, ITO Aki, SUETSUGU Daisuke, UTADA Hisashi

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• Brief overview of landing survey and seisimic observation at Nishinoshima

  TAKEO Minoru, OHMINATO Takao, ICHIHARA Mie, MAENO Fukashi, KANEKO Takayuki, SHINOHARA Masanao, BABA Kiyoshi, NISHIDA Kiwamu, YASUDA Atsushi, WATANABE Atsushi, SUGIOKA Hiroko, HAMANO Yozo, TADA Noriko, NAKANO Shun, YOSHIMOTO Mitsuhiro, KAWAKAMI Kazuto, CHIDA Tomoki, TAKAGI Akimichi, NAGAOKA Yutaka

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• 海底圧力計アレー記録を用いた干渉法による海洋重力波の抽出

  利根川貴志, 深尾良夫, 塩原肇, 杉岡裕子, 伊藤亜妃, 山下幹也

  2017, ブルーアース要旨集, 2017


• VTMとOBEMの観測による西之島火山のマグマだまりの推定

  多田訓子, 馬場聖至, 浜野洋三, 市原寛, 杉岡裕子, 小山崇夫, 武尾実

  2017, 地球電磁気・地球惑星圏学会総会及び講演会(Web), 142nd


• 海底面での機動的傾斜観測実現に向けたBBOBST-NXでの長期試験観測

  塩原肇, 篠原雅尚, 伊藤亜妃, 日野亮太, 佐藤利典, 杉岡裕子

  2017, 日本地震学会秋季大会講演予稿集(CD-ROM), 2017


• 2015年鳥島近海における火山性地震の津波波源モデル

  三反畑修, 綿田辰吾, 佐竹健治, 深尾良夫, 杉岡裕子, 伊藤亜妃, 塩原肇

  2017, 日本地震学会秋季大会講演予稿集(CD-ROM), 2017


• 広帯域海底地震計鉛直成分におけるノイズ除去の予備的解析

  川野由貴, 一瀬建日, 川勝均, 杉岡裕子

  2017, 日本地震学会秋季大会講演予稿集(CD-ROM), 2017


• 実体波の走時差から推定したオントンジャワ海台下の上部マントル構造

  小林拓史, 末次大輔, 大林政行, 杉岡裕子

  2017, 日本地震学会秋季大会講演予稿集(CD-ROM), 2017


• 海底電位磁力計が捉えた西之島火山下のマグマ上昇を示唆する二つの独立シグナル

  馬場聖至, 小山崇夫, 武尾実, 多田訓子, 浜野洋三, 杉岡裕子, 市原寛, 高木朗充

  2017, 日本火山学会講演予稿集, 2017


• 火山島活動の周辺の海からの観測の重要性について

  浜野洋三, 杉岡裕子, 市原美恵

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• 長期観測型海底地震計を用いた西之島火山のモニタリング

  篠原雅尚, 市原美恵, 酒井慎一, 山田知朗, 武尾実, 杉岡裕子, 長岡優, 高木朗充, 森下泰成, 小野智三, 西澤あずさ

  2017, 海洋調査技術学会研究成果発表会講演要旨集, 29th


• 西之島周辺における長期海底地震観測

  篠原雅尚, 市原美恵, 酒井慎一, 山田知朗, 武尾実, 杉岡裕子, 長岡優, 高木朗充, 森下泰成, 小野智三, 西澤あずさ

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• 西之島周辺での離島火山モニタリングシステムの初めての運用

  浜野洋三, 杉岡裕子, 市原美恵, 西田究, 馬場聖至, 多田訓子

  2017, 日本地球惑星科学連合大会予稿集(Web), 2017


• スロー地震カタログの標準化に向けて―データベースの整備―

  加納将行, 麻生尚文, 案浦理, 新井隆太, 伊藤喜宏, 鎌谷紀子, MAURY Julie, 中村衛, 西村卓也, 尾鼻浩一郎, 杉岡裕子, 高木涼太, 高橋努, 竹尾明子, 山下裕亮, 松澤孝紀, 井出哲, 小原一成

  2017, 日本地震学会秋季大会講演予稿集(CD-ROM), 2017, ROMBUNNO.S09‐P21, Japanese


• On the role of frequency dispersion on the trans-pacific tsunamis: Study of the 2010 and 2015 Chilean tsunamis

  Poupardin Adrien, Heinrich Philippe, Hebert Helene, Schindele Francois, Jamelot Anthony, Reymond Dominique, Sugioka Hiroko

  2016, IEEE Conference Proceedings, 2016(OCE) (OCE)


• 2015 Volcanic Tsunami Earthquake Near Torishima Island: Array analysis of ocean bottom pressure gauge records

  FUKAO Yoshio, SUGIOKA Hiroko, ITO Aki, SHIOBARA Hajime, SANDANBATA Osamu, WATADA Shingo, SATAKE Kenji

  2016, 日本地震学会秋季大会講演予稿集, 2016


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic discontinuity, and water content

  MATSUNO Tetsuo, SUETSUGU Daisuke, UTADA Hisashi, BABA Kiyoshi, TADA Noriko, SHIMIZU Hisayoshi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki

  2016, Conductivity Anomaly研究会論文集, 2016


• 2015 Torishima tsunami earthquake: Tsunami observation at short distances by an array of ocean bottom pressure gauges

  FUKAO Yoshio, SUGIOKA Hiroko, ITO Aki, SHIOBARA Hajime, SANDANBATA Osamu, WATADA Shingo, SATAKE Kenji

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• Anisotropy in the Northwest Pacific oceanic lithosphere inferred from Po/So waves

  SHITO Azusa, SUETSUGU Daisuke, FURUMURA Takashi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki, TAKEO Akiko, UTADA Hisashi

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• Azimuthal anisotropy and seismic discontinuity in the oceanic lithosphere revealed by active source surveys

  ISSE Takehi, FUJIE Gou, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, TAKEO Akiko, UTADA Hisashi, KODAIRA Shuichi

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• Development of a monitoring system of remote island volcanoes using an autonomous vehicle of the Wave Glider

  SUGIOKA Hiroko, HAMANO Yozo, ICHIHARA Mie, NISHIDA Kiwamu, TAKEO Minoru

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic discontinuity, and water content

  MATSUNO Tetsuo, SUETSUGU Daisuke, UTADA Hisashi, BABA Kiyoshi, TADA Noriko, SHIMIZU Hisayoshi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• 次期高機能海底地震計開発試験に向けた深海用小型ビデオカメラの開発

  塩原肇, 杉岡裕子, 太田豊宣, 大西信人

  2016, ブルーアース要旨集, 2016


• ウェーブグライダーを用いた離島火山モニタリングシステムの開発

  浜野洋三, 杉岡裕子, 伊藤亜妃, 市原美恵, 阿部英二, 篠原雅尚

  2016, ブルーアース要旨集, 2016


• 海陸地震観測記録を用いた南太平洋大海膨の上部マントル構造

  一瀬建日, 杉岡裕子, 伊藤亜妃, 塩原肇, REYMOND Dominique, 末次大輔

  2016, ブルーアース要旨集, 2016


• オントンジャワ海台周囲海盆の地殻構造:MR14-06レグ1における反射法地震探査観測

  清水祥伽, 清水祥伽, 中西正男, 末次大輔, 杉岡裕子, 杉岡裕子, 一瀬建日, 多田訓子, 市原寛, 市原寛, 三浦誠一, 小平秀一, 伊藤誠, 渡会勇太, 野口直人, 三浦亮, 鈴木瑛江, 柴田玄洋, 瀧澤薫, 徳長航, 稲垣孝一, 森岡美樹

  2016, ブルーアース要旨集, 2016


• オントンジャワ海台の構造と形成過程の解明(MR14-06レグ1,2)

  末次大輔, 杉岡裕子, 伊藤亜妃, 多田訓子, 市原寛, 清水祥伽, 三浦誠一, 羽生毅, 石原靖, 田中聡, 大林政行, 一瀬建日, 馬場聖至, 塩原肇, 歌田久司, 中西正男, 伊藤誠, 野口直人, 三浦亮, 渡会勇太, 鈴木瑛江, 柴田玄洋, 徳長航, 稲垣孝一, 森岡美樹

  2016, ブルーアース要旨集, 2016


• 2015年鳥島近海津波地震の海底水圧計アレー記録

  深尾良夫, 杉岡裕子, 伊藤亜紀, 塩原肇

  2016, ブルーアース要旨集, 2016


• オントンジャワ海台周囲の海盆形成過程の解明:MR14-06レグ1における地球物理学観測

  中西正男, 末次大輔, 清水祥伽, 清水祥伽, 杉岡裕子, 杉岡裕子, 一瀬建日, 多田訓子, 市原寛, 市原寛, 三浦誠一, 小平秀一, 伊藤誠, 渡会勇太, 野口直人, 三浦亮, 鈴木瑛江, 柴田玄洋, 瀧澤薫, 徳長航, 稲垣孝一, 森岡美樹

  2016, ブルーアース要旨集, 2016


• 広帯域海底地震観測記録を用いた太平洋上部マントル3次元S波速度構造

  一瀬建日, 塩原肇, 吉澤和範, 杉岡裕子, 伊藤亜妃, 末次大輔

  2016, 日本地震学会秋季大会講演予稿集, 2016


• 海底地震観測データから推定される房総沖フィリピン海プレート上面深度

  伊藤亜妃, 杉岡裕子, 尾鼻浩一郎, 中野優, 山本揚二朗, 末次大輔, 中東和夫, 篠原雅尚, 日野亮太

  2016, 日本地震学会秋季大会講演予稿集, 2016


• 2015年鳥島近海における火山性津波地震:分散性を考慮した波線追跡

  三反畑修, 綿田辰吾, 佐竹健治, 深尾良夫, 杉岡裕子, 伊藤亜妃, 塩原肇

  2016, 日本地震学会秋季大会講演予稿集, 2016


• 日本海溝上縁部を遡上する暴漲湍の検出

  深尾良夫, 杉岡裕子, 伊藤亜妃, 塩原肇, PAROS J. M., 古恵亮

  2016, 日本海洋学会大会講演要旨集, 2016


• 海底マグネトテルリック観測による西ノ島火山のマグマ溜りイメージングへの挑戦

  馬場聖至, 多田訓子, 市原寛, 小山崇夫, 杉岡裕子, 浜野洋三

  2016, 地球電磁気・地球惑星圏学会総会及び講演会(Web), 140th


• 西之島火山の活動把握を目指した多項目観測

  市原美恵, 篠原雅尚, 西田究, 酒井慎一, 山田知朗, 武尾実, 杉岡裕子, 浜野洋三, 長岡優, 高木朗充, 森下泰成, 西澤あずさ

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• 2015年鳥島津波地震:分散性を考慮した津波波線追跡

  三反畑修, 綿田辰吾, 佐竹健治, 深尾良夫, 杉岡裕子, 伊藤亜妃, 塩原肇

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• 西之島火山周辺海域でのハイドロフォン観測

  浜野洋三, 杉岡裕子, 伊藤亜妃, 市原美恵, 篠原雅尚, 西田究, 武尾実

  2016, 日本地球惑星科学連合大会予稿集(Web), 2016


• Extraction of Po-to-s converted waves from OBS records

  TONEGAWA Takashi, SHIOBARA Hajime, ISSE Takehi, SUGIOKA Hiroko, ITO Aki, TAKEO Akiko, KAWAKATSU Hitoshi, UTADA Hisashi

  2015, 日本地球惑星科学連合大会予稿集(Web), 2015


• Oceanic plate structure beneath the northwestern Pacific Ocean revealed by explosion experiments

  ISSE Takehi, SHIOBARA Hajime, YAMADA Tomoaki, YAGI Takeo, SHINOHARA Masanao, SUGIOKA Hiroko, UTADA Hisashi

  2015, 日本地球惑星科学連合大会予稿集(Web), 2015


• P-wave velocity anomalies of the plume beneath the French Polynesia

  OBAYASHI Masayuki, YOSHIMITSU Junko, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, SHIOBARA Hajime, SUETSUGU Daisuke

  2015, 日本地球惑星科学連合大会予稿集(Web), 2015


• Thickness of the mantle transition zone beneath the Society hotspot

  SUETSUGU Daisuke, SUGIOKA Hiroko, ISSE Takehi, ITO Aki, SHIOBARA Hajime

  2015, 日本地球惑星科学連合大会予稿集(Web), 2015


• Pacific Array

  KAWAKATSU Hitoshi, TAKEO Akiko, ISSE Takehi, NISHIDA Kiwamu, SHIOBARA Hajime, SUETSUGU Daisuke, SUGIOKA Hiroko

  2015, 日本地球惑星科学連合大会予稿集(Web), 2015


• 高分解能3軸加速度計による宮城県はるか沖海底変動の長期観測

  深尾良夫, 杉岡裕子, 伊藤亜紀, 塩原肇, PAROS Jerome M.

  2015, ブルーアース要旨集, 2015


• 2011年東北沖地震以降の日本海溝海側斜面における海底地震観測

  尾鼻浩一郎, 小平秀一, 藤江剛, 山本揚二朗, 高橋努, 三浦誠一, 佐藤壮, 中村恭之, 山下幹也, 末次大輔, 杉岡裕子, 伊藤亜妃, 篠原雅尚, 日野亮太

  2015, ブルーアース要旨集, 2015


• ふつうの海洋マントル(NOMan)プロジェクト:機器回収航海の成果

  歌田久司, 塩原肇, 馬場聖至, 一瀬建日, 川勝均, 竹尾明子, 杉岡裕子, 伊藤亜妃, 多田訓子, 末次大輔

  2015, ブルーアース要旨集, 2015


• 海底面での機動的傾斜観測によって直上で捉えた2014年1月房総沖スロースリップイベント時の傾斜変動

  塩原肇, 篠原雅尚, 伊藤亜妃, 杉岡裕子

  2015, ブルーアース要旨集, 2015


• 「ふつうの海洋マントル」プロジェクトで実施された爆破実験による北西太平洋の最上部マントル構造

  一瀬建日, 塩原肇, 山田知朗, 八木健夫, 篠原雅尚, 杉岡裕子, 歌田久司

  2015, ブルーアース要旨集, 2015


• 自律動作の高性能広帯域海底地震計開発計画:NX2G

  塩原肇, 篠原雅尚, 杉岡裕子, 伊藤亜妃

  2015, 日本地震学会秋季大会講演予稿集, 2015


• 房総沖海底地震観測による地震活動

  伊藤亜妃, 杉岡裕子, 尾鼻浩一郎, 中野優, 山本揚二朗, 末次大輔, 中東和夫, 篠原雅尚, 日野亮太

  2015, 日本地震学会秋季大会講演予稿集, 2015


• 海底電磁気・地震同時観測データから推定する北西太平洋「ふつう」の海洋マントル遷移層の含水量

  松野哲男, 末次大輔, 歌田久司, 馬場聖至, 多田訓子, 清水久芳, 塩原肇, 一瀬建日, 杉岡裕子, 伊藤亜妃

  2015, 日本地震学会秋季大会講演予稿集, 2015


• 北西太平洋における広帯域海底地震観測データを用いたリソスフェア-アセノスフェア境界の検出

  安部祐希, 川勝均, 塩原肇, 一瀬建日, 杉岡裕子, 伊藤亜妃, 歌田久司

  2015, 日本地球惑星科学連合大会予稿集(Web), 2015


• Detection of micro-tsunamis by using Vector Tsunameter

  HAMANO Yozo, SUGIOKA Hiroko, TADA Noriko, TOH Hiroaki, MINAMI Takuto

  2014, 地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 136th


• ベクトル津波計リアルタイム観測のための水中音響通信試験とウェーブグライダーの実海域長期運用

  浜野洋三, 杉岡裕子, 多田訓子, 伊藤亜紀, 藤浩明, 南拓人, 川嶋一生

  2014, ブルーアース要旨集, 2014


• 「ふつうの海洋マントル」プロジェクトによって明らかになった海洋マントルの構造:序報

  一瀬建日, 塩原肇, 杉岡裕子, 伊藤亜妃, 竹尾明子, 歌田久司, 川勝均, 利根川貴志, 田中聡

  2014, ブルーアース要旨集, 2014


• 「ふつうの海洋マントル」プロジェクトで実施された爆破実験による北西太平洋の最上部マントル構造

  一瀬建日, 塩原肇, 山田知朗, 八木健夫, 篠原雅尚, 杉岡裕子, 歌田久司

  2014, 日本地震学会秋季大会講演予稿集, 2014


• 海底面での機動的傾斜観測によって直上で捉えた2014年1月房総沖スロースリップイベント時の傾斜変動

  塩原肇, 篠原雅尚, 伊藤亜妃, 杉岡裕子

  2014, 日本地震学会秋季大会講演予稿集, 2014


• Observation of seafloor ElectroMagnetic(EM) signals by using Vector TsunaMeter

  HAMANO Yozo, SUGIOKA Hiroko, TADA Noriko, TOH Hiroaki, MINAMI Takuto, KAWASHIMA Issei

  2013, 地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 134th


• WAVE GLIDERを用いたリアルタイム海底津波モニタリングシステムの開発

  浜野洋三, 杉岡裕子, 藤浩明

  2013, 日本地震学会秋季大会講演予稿集, 2013


• 超深海域での海底地震観測への新たなる挑戦

  塩原肇, 篠原雅尚, 伊藤亜妃, 杉岡裕子

  2013, 日本地震学会秋季大会講演予稿集, 2013


• NOManプロジェクトによって明らかになった北西太平洋下の最上部マントル異方性構造:序報

  竹尾明子, 一瀬建日, 西田究, 川勝均, 塩原肇, 杉岡裕子, 伊藤亜妃, 歌田久司

  2013, 日本地震学会秋季大会講演予稿集, 2013


• 「ふつうの海洋マントル」プロジェクトによって明らかになった海洋マントルの構造:序報

  一瀬建日, 塩原肇, 杉岡裕子, 伊藤亜妃, 竹尾明子, 歌田久司, 川勝均, 利根川貴志, 田中聡

  2013, 日本地震学会秋季大会講演予稿集, 2013


• ベクトル津波計の開発・製作と海底観測

  浜野洋三, 杉岡裕子, 多田訓子, 伊藤亜妃, 藤浩明, 南拓人, 川嶋一生, 塩原肇

  2013, ブルーアース要旨集, 2013


• ふつうの海洋マントル(NOMan)プロジェクトの開始

  歌田久司, 塩原肇, 馬場聖至, 一瀬建日, 竹尾明子, 川勝均, 杉岡裕子, 伊藤亜妃, 多田訓子, 末次大輔

  2013, ブルーアース要旨集, 2013


• 「普通の海洋マントル」プロジェクトのパイロット観測によって推定された海洋リソスフェアの地震学的不均質構造

  末次大輔, 志藤あずさ, 杉岡裕子, 伊藤亜妃, 古村孝志, 一瀬建日, 歌田久司, 塩原肇, 竹尾明子, 川勝均

  2013, ブルーアース要旨集, 2013


• 「普通の海洋マントル」プロジェクトのパイロット観測によるマントルの地震学的構造:序報

  一瀬建日, 歌田久司, 塩原肇, 竹尾明子, 川勝均, 杉岡裕子, 伊藤亜妃, 末次大輔

  2013, ブルーアース要旨集, 2013


• 海溝海側を含む東北地方太平洋沖地震震源域周辺の海底地震観測

  尾鼻浩一郎, 末次大輔, 杉岡裕子, 伊藤亜妃

  2013, ブルーアース要旨集, 2013


• 海溝域での巨大地震性滑りの実態解明に向けて

  小平秀一, 野徹雄, 中村恭之, 三浦誠一, 富士原敏也, 海宝由佳, 藤江剛, 高橋努, 佐藤壮, 高橋成実, 金松敏也, 笠谷貴史, 尾鼻浩一郎, 伊藤亜妃, 杉岡裕子, 末次大輔

  2013, ブルーアース要旨集, 2013


• 2011年東北地震震源域の構造不均質

  山本揚二朗, 尾鼻浩一郎, 町田祐弥, 中東和夫, 篠原雅尚, 鈴木健介, 伊藤喜宏, 日野亮太, 小平秀一, 金田義行, 村井芳夫, 佐藤利典, 植平賢司, 八木原寛, 平田賢治, 対馬弘晃, 山崎明, 杉岡裕子, 伊藤亜妃, 末次大輔

  2013, 日本地震学会秋季大会講演予稿集, 2013, 78, Japanese


• TIARES Project-Tomographic investigation by seafloor array experiment for the Society hotspot

  SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, KASAYA Takafumi, TADA Noriko, BABA Kiyoshi, ABE Natsue, HAMANO Yozo, TARITS Pascal, BARRIOT Jean-Pierre, REYMOND Dominique

  Terra Scientific Pub. Co, 01 Apr. 2012, EPS : Earth, Planets and Space, 64(4) (4), i - iv, English


• Detection of small earthquakes along the Pacific-Antarctic Ridge from T-waves recorded by abyssal ocean-bottom observatories

  ITO Aki, SUGIOKA Hiroko, SUETSUGU Daisuke, SHIOBARA Hajime, KANAZAWA Toshihiko, KANAZAWA Toshihiko, FUKAO Yoshio

  2012, Marine Geophysical Researches, 33(3) (3)


• Seafloor Electromagnetic Station with Differential Pressure Gauge

  TOH Hiroaki, MINAMI Takuto, SUGIOKA Hiroko, HAMANO Yozo

  2012, 地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 132nd


• Tsunamigenic potential of the shallow subduction plate boundary inferred from slow seismic slip

  SUGIOKA Hiroko, OKAMOTO Taro, NAKAMURA Takeshi, ISHIHARA Yasushi, ITO Aki, OBANA Koichiro, KINOSHITA Masataka, NAKAHIGASHI Kazuo, SHINOHARA Masanao, FUKAO Yoshio

  2012, Nature Geoscience, 5(6) (6), 414 - 418, English


• Tsunami-induced electromagnetic fields in the ocean

  HAMANO Yozo, SUGIOKA Hiroko

  2012, 地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 132nd


• 海洋リソスフェアの地震学的構造

  志藤あずさ, 末次大輔, 古村孝志, 杉岡裕子, 伊藤亜妃

  2012, 日本地震学会秋季大会講演予稿集, 2012


• 2011年東北地方太平洋沖地震に伴う海溝陸側斜面の余震活動

  尾鼻浩一郎, 杉岡裕子, 伊藤亜妃, 中村恭之, 三浦誠一, 野徹雄, 小平秀一, 高橋成実, 篠原雅尚, 山田知朗, 塩原肇, 中東和夫, 植平賢司, 植平賢司, 日野亮太

  2012, 日本地震学会秋季大会講演予稿集, 2012


• ベクトル津波計の特徴について

  浜野洋三, 杉岡裕子, 藤浩明

  2012, 日本地震学会秋季大会講演予稿集, 2012


• 四国海盆とフレンチポリネシアにおける最上部マントルの地震波速度異方性

  竹尾明子, 西田究, 一瀬建日, 川勝均, 塩原肇, 金沢敏彦, 杉岡裕子, 伊藤亜妃, 末次大輔

  2012, ブルーアース要旨集, 2012


• 海底地震観測で明らかになった北西太平洋下の上部マントル構造

  一瀬建日, 塩原肇, 金沢敏彦, 末次大輔, 杉岡裕子

  2012, ブルーアース要旨集, 2012


• 海洋底で観測された2011年東北地方太平洋沖地震による津波電磁気シグナル

  浜野洋三, 杉岡裕子, 市原寛, 多田訓子, 藤浩明

  2012, ブルーアース要旨集, 2012


• 海底地震計記録の地震波干渉法解析によるマントル最上部の異方性推定

  竹尾明子, FORSYTH Donald, 西田究, 一瀬建日, 川勝均, 塩原肇, 末次大輔, 杉岡裕子, 伊藤亜妃, WEERARATNE Dayanthie, 金沢敏彦

  2012, 日本地震学会秋季大会講演予稿集, 2012


• 海底地震観測と陸上観測記録の統合解析による2011年東北地震震源域周辺の地震波速度構造

  山本揚二朗, 尾鼻浩一郎, 町田祐弥, 中東和夫, 篠原雅尚, 鈴木健介, 伊藤喜宏, 日野亮太, 小平秀一, 金田義行, 村井芳夫, 佐藤利典, 植平賢司, 八木原寛, 平田賢治, 杉岡裕子, 伊藤亜妃, 末次大輔

  2012, 日本地震学会秋季大会講演予稿集, 2012, 159, Japanese


• Seafloor array observation of the electromagnetic tsunami signals in the French Polynesia region

  HAMANO Yozo, SUGIOKA Hiroko, KASAYA Takafumi, BABA Kiyoshi, TADA Noriko, SUETSUGU Daisuke

  2011, 地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 130th


• 北西太平洋海盆で観測された東北地方太平洋沖地震津波による海洋ダイナモ効果

  南拓人, 藤浩明, 浜野洋三, 杉岡裕子, 多田訓子, 舘畑秀衛, 穂積裕太

  2011, 日本地震学会秋季大会講演予稿集, 2011


• 表面波を用いた南太平洋大海膨の上部マントル3次元S波速度構造

  一瀬建日, 塩原肇, 杉岡裕子, 伊藤亜妃, 末次大輔

  2011, 日本地震学会秋季大会講演予稿集, 2011


• 次世代の機動的海底広帯域地震観測へ向けた基礎研究

  塩原肇, 金沢敏彦, 篠原雅尚, 一瀬建日, 杉岡裕子, 伊藤亜妃

  2011, ブルーアース要旨集, 2011


• ポリネシア海底地球物理ネットワークによって検知された2010年チリ地震津波による電磁場変動

  浜野洋三, 杉岡裕子, 笠谷貴史, 馬場聖至, 多田訓子, 塩原肇, 伊藤亜妃, 一瀬建日, 末次大輔

  2011, ブルーアース要旨集, 2011


• 超低周波地震の発生過程の解明に向けて:近地項波形から検出される超低周波地震の立ち上がり時間と静的変位場

  石原靖, 杉岡裕子, 岡元太郎, 中村武史, 尾鼻浩一郎, 伊藤亜妃, 小平秀一, 末次大輔, 木下正高, 深尾良夫

  2010, 日本地震学会秋季大会講演予稿集, 2010


• 広帯域海底地震計によって観測された紀伊半島沖の超低周波地震活動

  尾鼻浩一郎, 伊藤亜妃, 杉岡裕子, 石原靖, 中村武史, 末次大輔, 小平秀一, 木下正高, 荒木英一郎, 金田義行, 深尾良夫, 岡元太郎

  2010, 日本地震学会秋季大会講演予稿集, 2010


• 広帯域海底地震計記録で捉えた紀伊半島沖超低周波地震の2.5次元差分法によるモーメントテンソル解析

  岡元太郎, 中村武史, 杉岡裕子, 石原靖, 伊藤亜妃, 尾鼻浩一郎, 小平秀一, 末次大輔, 木下正高, 深尾良夫

  2010, 日本地震学会秋季大会講演予稿集, 2010


• 紀伊半島沖で発生した超低周波地震の3次元地震波動伝播シミュレーション

  中村武史, 岡元太郎, 杉岡裕子, 石原靖, 伊藤亜妃, 尾鼻浩一郎, 小平秀一, 末次大輔, 木下正高, 深尾良夫, 金田義行

  2010, 日本地震学会秋季大会講演予稿集, 2010


• 広帯域海底地震計データへの地震波干渉法適用による海洋下の短周期Love/Rayleigh波位相速度の測定

  竹尾明子, 西田究, 川勝均, 一瀬建日, 塩原肇, 金沢敏彦, 杉岡裕子

  2010, 日本地震学会秋季大会講演予稿集, 2010


• 長期観測型海底地震計を用いたチリ三重会合点付近における地震観測

  篠原雅尚, 山田知朗, 杉岡裕子, 伊藤亜妃, MILLER Matthew, 一瀬建日, BATAILLE Klaus, 岩森光

  2010, 日本地球化学会年会講演要旨集, 57th


• Review of five years of activity at IFREE/JAMSTEC

  FUKAO Yoshio, KODAIRA Shuichi, KINOSHITA Masataka, TATSUMI Yoshiyuki, OHKOCHI Naohiko, SUZUKI Katsuhiko, SUETSUGU Daisuke, HANYU Takeshi, SUGIOKA Hiroko, ONO Shigeaki, HIROSE Kei, YANAGISAWA Takatoshi, HAMANO Yozo, FUJIWARA Toshiya, KITAZATO Hiroshi, TAKAHASHI Narumi, SAGAKUCHI Hide

  2009, JAMSTEC Report of Research and Development, 9(2) (2)


• Upper mantle discontinuities beneath the petit-spot

  SHITO Azusa, SUETSUGU Daisuke, SUGIOKA Hiroko, ITO Aki, SHIOBARA Hajime, KANAZAWA Toshihiko

  2009, 日本地震学会秋季大会講演予稿集, 2009


• ノイズ低減のための広帯域海底地震計設置実験

  伊藤亜妃, 杉岡裕子, 荒木英一郎

  2009, JAMSTEC Report of Research and Development, (Special Issue) (Special Issue)


• Calibration of deep sea differential pressure gauge

  Araki Eiichiro, Sugioka Hiroko

  A deep-sea differential pressure gauge (DPG) is very sensitive pressure sensor suitable for observation for earthquakes and acoustic phenomena in frequencies 10mHz to 1Hz, providing much lower noise floor compared to existing quartz pressure gauge. Frequency response of DPG is affected by temperature and pressure environment where the sensor is installed. Methods to estimate sensitivity and frequency response of DPG were developed, by comparing pressure data with those from quartz pressure gauge of Paroscientific, Inc. Two calibration methods to apply low frequency pressure change were experimented, one in the seafloor, and the other in a laboratory. Using these methods, precise sensitivity and frequency response calibration of DPG can be practiced.

  Japan Agency for Marine-Earth Science and Technology, 2009, JAMSTEC Report of Research and Development, 2009(Special Issue) (Special Issue), 141 - 148


• Physical properties in the asthenosphere beneath the petit-spot region inferred from BBOBS data

  SHITO Azusa, SUGIOKA Hiroko, ITO Aki, BABA Kiyoshi, ABE Natsue, HIRANO Naoto, SHIOBARA Hajime, KANAZAWA Toshihiko

  2009, Blue Earth要旨集, 2009


• 南海トラフ付加体で発生する低周波地震の震源像の解明に向けたOBS自然地震観測

  尾鼻浩一郎, 杉岡裕子, 伊藤亜妃, 藤亜希子, 小平秀一, 末次大輔, 木下正高, 石原靖, 荒木英一郎, 金田義行, 深尾良夫

  2009, Blue Earth要旨集, 2009


• 海底掘削孔内に設置した高感度傾斜計によるプレート間滑りの検出

  荒木英一郎, 藤本博巳, 日野亮太, 金澤敏彦, 篠原雅尚, 金田義行, 末広潔, 有吉慶介, 杉岡裕子, 松本浩幸, 伊藤亜妃, SACKS Selwyn, LINDE Alan

  2009, Blue Earth要旨集, 2009


• 表面波を用いたフィリピン海北部のS波速度異方性構造

  一瀬建日, 塩原肇, MONTAGNER J.-P., 杉岡裕子, 伊藤亜妃, 志藤あずさ, 金沢敏彦, 吉澤和範

  2009, 日本地震学会秋季大会講演予稿集, 2009


• 次世代の広帯域海底地震計の開発

  塩原肇, 金沢敏彦, 篠原雅尚, 一瀬建日, 杉岡裕子, 伊藤亜妃

  2009, 日本地震学会秋季大会講演予稿集, 2009


• 地震探査コミュニティの形成を目指して

  小林直樹, 白石浩章, 荒木英一郎, 末次大輔, 石原靖, 杉岡裕子, 新谷昌人, 堀輝人, 栗田敬, 鹿熊英昭, 村上英記, 岡元太郎, 石原吉明, 佐々木晶, 岡田達明, 早川雅彦, 田中智, 佐藤毅彦, 藤村彰夫, 飯島祐一, 小川和津, 白井慶, 川村太一, 竹内希, 西田究, 久家慶子, ZHAO D., 谷本俊郎, 山田功夫, 蓬田清, 山田竜平, 宮本英昭

  2009, 日本地震学会秋季大会講演予稿集, 2009


• Seismic image of mantle plumes beneath the South Pacific

  OBAYASHI M., SUETSUGU D., TANAKA S., ISSE T., YOSHIMITSU J., SHIOBARA H., SUGIOKA H., KANAZAWA T., FUKAO Y., BARROUL G., REYMOND Dominique

  2008, 日本地球化学会年会講演要旨集, 55th


• 北西太平洋の新種火山「プチスポット」の総合調査:メルト生成場とマグマ噴出場の分布解明

  馬場聖至, 阿部なつ江, 平野直人, 町田嗣樹, 石井輝秋, 山本順司, 山野誠, 濱元栄起, 杉岡裕子, 志藤あずさ, 伊藤亜妃, 高橋亜夕, 富士原敏也, 中西正男, 小池悠己, 小池悠己, 磯部太祐, 吉田貴洋

  2008, しんかいシンポジウム予稿集, 24th


• 海底での高精度広帯域地震観測に向けて

  荒木英一郎, 川口勝義, 松本浩幸, 金子将, 金田義行, 小寺透, 塩原肇, 杉岡裕子, 末次大輔, 伊藤亜妃

  2008, しんかいシンポジウム予稿集, 24th


• 南太平洋及び沈み込み帯における地質学・地球物理学的研究

  阿部なつ江, 末次大輔, 金松敏也, 米山邦夫, 杉本伸夫, 安間了, 山崎俊嗣, 横内陽子, 植松光夫, 栗田直幸, 松本剛, 土屋正史, 平野直人, 中西正男, 塚本修, 岩森光, 倉沢篤史, 倉沢篤史, 古谷浩志, JUNG Jinyoung, 木村亮, 奥村智, 土井明日加, 鎌田稔, 清家隆義, 田中駿介, 杉岡裕子, 伊藤亜妃, 笠谷貴史, 多田訓子, 町田嗣樹, 一瀬建日, 馬場聖至, 安間了, 折橋裕二, 安仁屋政武, 川村喜一郎, 山崎俊嗣, 下野貴也, 平野直人

  2008, 海洋研究開発機構航海概要報告書&運航実績一覧&航跡図&運航線表(CD-ROM), 2008


• 海底地震・電磁気観測でスタグナントスラブを診る

  塩原肇, 杉岡裕子, 馬場聖至, 笠谷貴史, 志藤あずさ, 伊藤亜妃, 一北岳夫

  2008, 海洋研究開発機構航海概要報告(CD-ROM), 2006


• プチスポット総合調査

  馬場聖至, 阿部なつ江, 平野直人, 富士原敏也, 市來雅啓, 町田嗣樹, 高橋亜夕, 山本順司, 山野誠, 濱元栄起, 杉岡裕子, 志藤あずさ

  海洋出版, Sep. 2007, 月刊地球, 29(9) (9), 548 - 553, Japanese

  Introduction commerce magazine


• Modeling French Polynesia hotspot swells by dynamic topography based on a new regional tomography model

  ADAM C., YOSHIDA M., ISSE T., SUETSUGU D., SHIOBARA H., SUGIOKA H., KANAZAWA T., FUKAO Y., BARRUOL G.

  2007, 日本地震学会秋季大会講演予稿集, 2007


• Seismic image of the South Pacific superplume in the whole mantle

  SUETSUGU D., TANAKA S., OBAYASHI M., ISSE T., SHIOBARA H., SUGIOKA H., BARRUOL G., YOSHIMITSU J., KANAZAWA T., FUKAO Y.

  2007, 日本地震学会秋季大会講演予稿集, 2007


• スタグナントスラブを「診る」ための海底地震・電磁気長期観測

  塩原肇, 馬場聖至, 志藤あずさ, 金沢敏彦, 歌田久司, 杉岡裕子, 笠谷貴史, 伊藤亜妃, 一北岳夫

  2007, しんかいシンポジウム予稿集, 23rd


• 自己浮上型長期海底観測技術の高度化:シンカイヒバリガイ類および共生系の起源と進化

  塩原肇, 宮崎淳一, 杉岡裕子, 小林英樹, 谷田部明子, 藤田祐子, 松本寛人

  2007, 海洋研究開発機構航海概要報告(CD-ROM), 2005


• スタグナントスラブモデルに対する理論波形について

  坪井誠司, 杉岡裕子, 大林政行, 深尾良夫, GAO Yuan

  2007, 日本地震学会秋季大会講演予稿集, 2007


• 広帯域海底地震計を用いたフィリピン海の上部マントル3次元S波構造-伊豆小笠原マリアナ弧に沿った3つの低速度異常

  一瀬建日, 吉澤和範, 末次大輔, 田村芳彦, 塩原肇, 杉岡裕子, 伊藤亜妃, 川勝均, 志藤あずさ, CLAUDIA Adam, 金沢敏彦, 深尾良夫

  2007, 日本地震学会秋季大会講演予稿集, 2007


• 海洋プレートと島弧の深部構造-IODP超深度掘削へ向けて-プチスポット総合調査

  馬場聖至, 阿部なつ江, 平野直人, 富士原敏也, 市來雅啓, 町田嗣樹, 高橋亜夕, 山本順司, 山野誠, 濱元栄起, 杉岡裕子, 志藤あずさ

  2007, 月刊地球, 29(9) (9)


• 広帯域海底地動・水圧同時観測による海底地殻変動のモニタリング 水中LED光源と海底重力計の開発

  杉岡裕子, 横引貴史, 荒木英一郎, 後藤忠徳, 伊藤亜妃, 寺田育正

  2007, 海洋研究開発機構航海概要報告書&運航実績一覧&航跡図&運航線表(CD-ROM), 2007


• 北西太平洋の新種火山「プチスポット」の総合調査:メルト生成場とマグマ噴出場の分布解明

  馬場聖至, 阿部なつ江, 平野直人, 杉岡裕子, 志藤あずさ, 町田嗣樹, 濱元栄起, 伊藤亜紀, 高橋亜夕, 吉田貴洋, 磯部大祐, 小池悠己, 石井輝秋

  2007, 海洋研究開発機構航海概要報告書&運航実績一覧&航跡図&運航線表(CD-ROM), 2007


• 海底地震・電磁気観測でスタグナントスラブを診る

  塩原肇, 後藤忠徳, 杉岡裕子, 馬場聖至, 川勝均, 志藤あずさ, 一北岳夫, CLAUDIA Adam

  2007, 海洋研究開発機構航海概要報告(CD-ROM), 2005, ROMBUNNO.KAIREIKR05-14, Japanese


• マリアナ深発地震のP波後続波から推定される下部マントル反射面

  末次大輔, 大林政行, 杉岡裕子

  2006, 日本地震学会秋季大会講演予稿集, 2006


• 初島沖長期観測ステーション機能拡張

  満沢巨彦, 浅川賢一, 渡辺智毅, 後藤忠徳, 荒木英一郎, 杉岡裕子, 笠谷貴史, 佐柳敬造, 三ケ田均, 藤本博巳, 小泉金一郎, 長尾年恭

  2006, しんかいシンポジウム予稿集, 22nd


• フレンチ・ポリネシア広帯域海底地震観測による遠地P波走時異常

  田中聡, 末次大輔, 塩原肇, 杉岡裕子, 大林政行, 深尾良夫, 金沢敏彦

  2006, 日本地震学会秋季大会講演予稿集, 2006


• スタグナントスラブを「診る」ための海底地震・電磁気長期観測の開始

  塩原肇, 馬場聖至, 川勝均, 志藤あずさ, 小山崇夫, 金沢敏彦, 歌田久司, 後藤忠徳, 杉岡裕子, CLAUDIA Adam, 市来雅啓, 一北岳夫

  2006, しんかいシンポジウム予稿集, 22nd, 159, Japanese


• 自己浮上型長期海底観測技術の高度化

  塩原肇, 杉岡裕子, 後藤忠徳, 篠原雅尚, 金沢敏彦

  2006, しんかいシンポジウム予稿集, 22nd, 160, Japanese


• ポリネシアBBOBS観測による南太平洋大海膨マントル不連続面の深さ推定

  末次大輔, 塩原肇, 杉岡裕子, 金沢敏彦, 深尾良夫

  2005, 日本地震学会秋季大会講演予稿集, 2005


• 2003年十勝沖地震 5章 津波 平成15年十勝沖地震海域における海底地殻変動観測

  三ケ田均, 松本浩幸, 渡辺智毅, 杉岡裕子, 大塚梨代, 森田重彦

  2005, 月刊地球


• BBOBSを用いた南太平洋大海膨の3次元上部マントルS波速度構造

  一瀬建日, 末次大輔, 塩原肇, 杉岡裕子, 吉沢和範, 金沢敏彦, 深尾良夫

  2005, 日本地震学会秋季大会講演予稿集, 2005


• 仏領ポリネシアにおける広帯域海底地震観測とドレッジ調査

  末次大輔, 塩原肇, 杉岡裕子, 仲二郎, 羽生毅

  2005, しんかいシンポジウム予稿集, 21st


• 釧路・十勝沖における移動型観測システムを用いたリアルタイム機動観測

  川口勝義, 松本浩幸, 荒木英一郎, 杉岡裕子, 大塚梨代

  2005, しんかいシンポジウム予稿集, 21st


• マリアナでの長期海底地震観測

  塩原肇, 杉岡裕子, 望月公広, 金沢敏彦, 深尾良夫, 末広潔

  2005, しんかいシンポジウム予稿集, 21st


• 津波予測 海底水圧計で観測される音響波から津波を予測する

  松本浩幸, 三ケ田均, 杉岡裕子

  海洋出版, 2005, 月刊地球, 27(3) (3), 206 - 209, Japanese


• 海洋音響技術の最近の動き 水中音波で予測する津波発生

  松本浩幸, 杉岡裕子, 三ケ田均

  日本工業出版, 2005, 超音波Techno, 17(3) (3), 13 - 17, Japanese


• 海底地殻変動による水中音響波の発生について

  松本浩幸, 三ケ田均, 杉岡裕子

  2004, 日本地震学会秋季大会講演予稿集, 2004


• フィリピン海プレートの3次元S波速度構造

  一瀬建日, 吉沢和範, 塩原肇, 篠原雅尚, 中東和夫, 望月公広, 杉岡裕子, 末次大輔, 金沢敏彦

  2004, 日本地震学会秋季大会講演予稿集, 2004


• Deep seismic profiling across the Mariana arc-backarc system

  TAKAHASHI N, KODAIRA S, ITO A, SHIOBARA H, SUGIOKA H, KERR B, VLAD I, KLEMPERER S, KANEDA Y

  2003, JAMSTEC深海研究, 23(23) (23), 55 - 68, English

  [Refereed]

  Report scientific journal


• 移動型観測システムを用いたリアルタイム機動観測

  川口勝義, 三ケ田均, 杉岡裕子

  2003, しんかいシンポジウム予稿集, 19th


• 地球内部構造-地震学的アプローチ-長期広帯域海底地震観測網データのレシーバー関数解析によるフィリピン海マントル不連続面の深さ推定

  末次大輔, 塩原肇, 杉岡裕子, 小平秀一, 深尾良夫, 望月公広, 金沢敏彦, 日野亮太, 斉田智治

  日野 : 海洋出版, 2003, 月刊地球, 25(7) (7), 513 - 517, Japanese


• フィリピン海マントル遷移層における温度と含水量の推定

  末次大輔, 塩原肇, 井上徹, 杉岡裕子, 深尾良夫, 望月公広, 金沢敏彦, 日野亮太, 斉田智治

  2003, 日本地震学会秋季大会講演予稿集, 2003


• フィリピン海のレイリー波位相速度の地域性

  一瀬建日, 中村恭之, 塩原肇, 深尾良夫, 望月公広, 金沢敏彦, 杉岡裕子, 日野亮太, 末次大輔

  2003, 日本地震学会秋季大会講演予稿集, 2003


• 内部潮汐波の励起による海中音波速度の半日周期変動

  杉岡裕子, 深尾良夫, 日比谷紀之

  2003, 日本地震学会秋季大会講演予稿集, 2003


• 地球内部構造-地震学的アプローチ-広帯域海底地震計アレーを用いたフィリピン海北部のレイリー波位相速度構造

  一瀬建日, 塩原肇, 深尾良夫, 望月公広, 金沢敏彦, 杉岡裕子, 小平秀一, 日野亮太, 末次大輔

  2003, 月刊地球, 25(7) (7)


• マリアナ島弧・背弧域における地震波構造探査 (2)

  高橋成実, 小平秀一, 伊藤亜妃, 杉岡裕子, KERR B, VLAD I, KLEMPERER S, 金田義行, 末広潔

  2003, 日本地震学会秋季大会講演予稿集, 2003


• マリアナでの長期海底地震観測:深発地震活動

  塩原肇, 望月公広, 大木聖子, 金沢敏彦, 深尾良夫, 杉岡裕子, 末広潔

  2003, 日本地震学会秋季大会講演予稿集, 2003


• 長期広帯域海底地震観測網データのレシーバー関数解析によるフィリピン海マントル不連続面の深さ推定

  末次大輔, 塩原肇, 杉岡裕子, 小平秀一, 深尾良夫, 望月公広, 金沢敏彦, 日野亮太, 斉田嶋治

  2002, 日本地震学会秋季大会講演予稿集, 2002


• 広帯域海底地震計アレーを用いたフィリピン海北東部のレイリー波速度

  一瀬建日, 末次大輔, 塩原肇, 深尾良夫, 望月公広, 金沢敏彦, 杉岡裕子, 小平秀一, 日野亮太

  2002, 日本地震学会秋季大会講演予稿集, 2002


• 釧路十勝沖海底地震観測総合システムがとらえた地震活動

  大塚理代, 平田賢治, 杉岡裕子, 藤江剛, 森田重彦, 三ケ田均

  2001, 日本地震学会秋季大会講演予稿集, 2001


• 機動性を持つ海底リアルタイム観測点の整備

  川口勝義, 杉岡裕子

  2001, しんかいシンポジウム予稿集, 18th


• 2000年伊豆諸島群発地震活動 海底地震計による臨時観測

  藤江剛, 三ケ田均, 荒木英一郎, 海宝由佳, 杉岡裕子, 山田知朗, 西沢あずさ

  2001, しんかいシンポジウム予稿集, 17th


• 釧路沖海底ケーブル地震計・津波計のパフォーマンス

  杉岡裕子, 末広潔, 川口勝義, 平田賢治

  2001, しんかいシンポジウム予稿集, 17th


• 長期広帯域海底地震観測による深部構造イメージング フィリピン海横断測線と北西太平洋WP-2観測点

  塩原肇, 望月将志, 篠原雅尚, 金沢敏彦, 米島慎二, 望月公広, 杉岡裕子, 小平秀一, 日野亮太

  2001, 日本地震学会秋季大会講演予稿集, 2001


• 釧路・十勝沖海底地震総合観測システムの広帯域海底地震計のセンサノイズ特性について 気象庁精密地震観測室での比較観測

  平田賢治, 杉岡裕子, 海宝由佳, 藤沢格, 片山武, 菱木賢治, 柏原静雄

  2001, しんかいシンポジウム予稿集, 17th


• On characteristics of inherent sensor noise of ocean bottom seismometers attached on the real-time seafloor geophysical observatory off Kushiro-Tokachi. A calibration test at the JMA Matsushiro seismological observatory.

  平田賢治, 杉岡裕子, 藤沢格, 片山武, 海宝由佳, 菱木賢治, 柏原静雄

  2001, JAMSTEC深海研究, (18) (18)


• On a relation between inherent sensor noise characteristics and event detectability of seismic network of the real-time seafloor geophysical observatory off Kushiro-Tokachi.

  平田賢治, 杉岡裕子, 藤沢格, 片山武, 海宝由佳, 菱木賢治, 柏原静雄

  2001, JAMSTEC深海研究, (18) (18)


• Urgent researches of sea bed substructures, etc., in the eastern sea waters of Kouzushima. 1. The distribution analysis of stress source by the sea bed substructural exploration in the seismic activity area. 1.1. Sea bed substructural exploration and geological survey.

  宇平幸一, 小平秀一, 鶴哲郎, 金田義行, 杉岡裕子, 藤江剛, 三ケ田均, 徐垣, 末広潔

  2001, 科学技術振興調整費 平成12年度成果報告書 Vol.6-2 生活者ニーズ対応 環境と資源の持続的利用に資する資源循環型エコシステムの構築に関する研究 第2期 平成10-12年度


• フィリピン海横断測線での長期海底地震観測 速報

  塩原肇, 加藤護, 望月将志, 金沢敏彦, 米島慎二, 望月公広, 杉岡裕子, 小平秀一, 日野亮太

  2000, 日本地震学会秋季大会講演予稿集, 2000


• 相模湾初島沖深海底総合観測ステーションによる2000年伊豆諸島地震活動の観測

  岩瀬良一, 杉岡裕子

  2000, 日本地震学会秋季大会講演予稿集, 2000


• ケーブル式海底地震計・津波計 釧路・十勝沖海底地震総合観測システムの開発

  平田賢治, 三ケ田均, 満沢巨彦, 海宝由佳, 岩瀬良一, 川口勝義, 杉岡裕子, 青柳勝, 木下肇

  1999, しんかいシンポジウム予稿集, 16th


• Earthquake and underwater sound. Submarine volcanic activity investigated with the underwater acoustic wave.

  杉岡裕子, 深尾良夫

  資料形態 : テキストデータ プレーンテキスト

  日本工業出版, 1999, 超音波Techno, 11(11) (11), 7 - 11, Japanese


• Monitoring of submarine eruption by using OBS arrays records.

  杉岡裕子, 深尾良夫, 金沢敏彦, 神定健二

  1998, 地球惑星科学関連学会合同大会予稿集, 1998


• Monitering of Submarine Eruption by Using OBS Array Records.

  杉岡裕子, 深尾良夫, 金沢敏彦, 酒井慎一, 神定健二

  1997, 日本地震学会秋季大会講演予稿集, 1997


• Ocean Bottom Seismographic Experiment to Study Crustal Structure in Hyuganada.

  市川岳, 白銀哲雄, 仲西理子, 塩原肇, 島村英紀, 日野亮太, 山田知朗, 杉岡裕子, 金沢敏彦

  1997, 地球惑星科学関連学会合同大会予稿集, 1997


• Boso OBS Array Analysis. Detection of Earthquakes in Accretional Prism by Multireflected Waves.

  杉岡裕子, 深尾良夫, 神定健二

  1997, 日本地震学会秋季大会講演予稿集, 1997(2) (2), Japanese


• Synthetic Waveform Analysis. Multireflected Waves Exited by an Earthquake in Accretional Prism.

  杉岡裕子, 岡元太郎, 深尾良夫

  1997, 日本地震学会秋季大会講演予稿集, 1997(2) (2), Japanese


• Ocean Bottom Seismographic Experiment to Study Crustal Structure in Hyuganada.

  市川岳, 白銀哲雄, 仲西理子, 塩原肇, 島村英紀, 日野亮太, 山田知朗, 杉岡裕子, 金沢敏彦

  1996, 地球惑星科学関連学会合同大会予稿集, 1996


• Ocean Bottom Seismographic Experiment to Study Crustal Structure in Hyuganada.

  市川岳, 白銀哲雄, 仲西理子, 塩原肇, 島村英紀, 日野亮太, 山田知朗, 杉岡裕子, 金沢敏彦

  1996, 日本地震学会秋季大会講演予稿集, 1996


• Deep structure of volcanos and inland earthquakes.Nikko region.Correlation between the startup of a seismic waveform obtained by high sensitivity observation and earthquake scale.

  中谷正生, 芝崎文一郎, 金嶋聡, 深尾良夫, 松浦充宏, 亀伸樹, 杉岡裕子, 大谷竜, 武尾実

  1995, 月刊地球, 17(2) (2)


• Seismic Evidence of Low Velocity Zone in the Inner Core.

  杉岡裕子, 深尾良夫

  1995, 地球惑星科学関連学会合同大会予稿集, 1995


• J-array Analysis. Travel time anomaly of P waves incident to the downgoing slab from below.

  杉岡裕子, 深尾良夫

  1994, 地球惑星科学関連学会合同大会予稿集, 1994


• Waveforms of earthquakes at the very beginning-relation with magnitude.

  中谷正生, 芝崎文一郎, 金嶋聡, 深尾良夫, 亀伸樹, 大谷竜, 杉岡裕子, 松浦充宏, 伊藤孝士

  1994, 日本地震学会秋季大会講演予稿集, 1994


• Differential GPS Positioning of Seismic Observation Sites. The 1993 Joint Seismic Observation in and around the Nikko Area.

  酒井慎一, 飯高隆, 植平賢司, 勝俣啓, 河原純, 杉岡裕子, 束田進也

  1994, 地球惑星科学関連学会合同大会予稿集, 1994


• Travel time anomaly of P waves incident to the downgoing slab fron below.

  杉岡裕子, 酒井慎一, 深尾良夫

  1994, 日本地震学会秋季大会講演予稿集, 1994

• 熊野灘のスロー地震活動とその地質構造の関係

  悪原岳, 東京大学地震研究所, 白石和也, 山下裕亮, 杉岡裕子, 大柳修慧, 伊藤喜宏, 都大学, 新井隆太, 荒木英一郎, 藤江剛, 中村恭之, 利根川貴志, 開発研究機構, 東龍介, 日, 野亮太, 望月公廣, 武村俊介, 山田知朗, 篠原雅尚

  海と地球のシンポジウム2024, Mar. 2025

  Oral presentation


• Revealing the beginning of Slab Windows at the Chilean Triple Junction

  Kellen Azúa, Satoshi Ide, Suguru Yano, Sergio Ruiz, Hiroko Sugioka, Hajime Shiobara, Aki Ito, Matthew Miller, Hikaru Iwamori

  Slow-to-Fast Earthquakes Workshop in Chile, Jan. 2025

  Oral presentation


• Seismic Image of the Central to Southern Andean Subduction Zone Through Finite‐Frequency Tomography

  Yuko Kondo, Masayuki Obayashi, Hiroko Sugioka, Hajime Shiobara, Aki Ito, Masanao Shinohara, Hikaru Iwamori, Masataka Kinoshita, Matthew Miller, Carlos Tassara, Javier Ojeda

  Slow-to-Fast Earthquakes Workshop in Chile, Jan. 2025

  Poster presentation


• Ocean bottom pressure gauge array observation for detecting slow earthquakes with a wide frequency range at Southwestern off the Vancouver Island

  Hajime Shiobara, Hiroko Sugioka, Koichiro Obana, Tsutomu Takahashi, Tianhaozhe Sun, Kelin Wang, Andrew J Schaeffer, Tiegan E Hobbs, Cooper Stacey, Karen Louise Douglas, Michael Riedel

  AGU Fall Meeting 2024, Dec. 2024

  Poster presentation


• Six Years in the Pacific: Seismic Waveforms and Traveltimes for Mantle Tomography from MERMAID

  Frederik J Simons, Guust Nole, Carlos Becerril, Sebastien Bonnieux, Bá Hoàng Nguyễn, Yuko Kondo, Fanchao Kong, Masayuki Obayashi, Karin Sigloch, Sirawich Pipatprathanpor, Joel D. Simo, Hiroko Sugioka, Junko Yoshimitsu, Qiunling Zhang, The EarthScope-Oceans Consortium

  AGU Fall Meeting 2024, Dec. 2024

  Oral presentation


• 光ファイバを利用した洋上風力の海底送電線監視と地震観測の協業

  小川 豊, 杉岡 裕子

  日本風力エネルギー学会, Nov. 2024

  Oral presentation


• 鬼界カルデラ海域における潮汐起因の電磁場応答の研究

  柴田 悠, 野々山, 島 伸和, 南 拓人, 小畑 拓実, 松野 哲男, 杉岡 裕子, 大塚 宏徳, 羽入 朋子, 山, 本 揚二朗, 中道 治久

  地球電磁気・地球惑星圏学会2024年秋学会, Nov. 2024

  Poster presentation


• Shear Wave Tomography Beneath the Ontong Java Plateau Region Using a Joint Inversion of Body Wave and Surface Wave Data

  近藤 優子, 杉岡 裕子, 大林 政行, 一瀬 建日, 吉澤 和範

  日本地震学会2024年度秋季大会, Oct. 2024

  Poster presentation


• 超深海域での広帯域地震観測へ向けた海底地震計(UDBBOBS)の開発

  塩原 肇, 伊藤 亜妃, 杉岡 裕子, 篠原 雅尚

  日本地震学会2024年度秋季大会, Oct. 2024

  Oral presentation


• 洋上風力発電施設を利用した海域DAS観測網の新展開

  小川 豊, 杉岡 裕子

  日本地震学会2024年度秋季大会, Oct. 2024

  Oral presentation


• カスカディア沈み込み帯北部における海底地震、海底圧力計観測

  尾鼻 浩一郎, 塩原 肇, 杉岡 裕子, 高橋 努, Riedel Michael, Sun Tianhaozhe, Schaeffer Andrew, Douglas Karen, ôté Michelle, Hobbs Tiega, Stacey Cooper, Wang Kelin, Heesemann Marti, Hutchinson Jesse

  日本地震学会2024年度秋季大会, Oct. 2024

  Poster presentation


• 1年間続いた伊豆小笠原海溝沿いのプレート間ズルズル滑り

  深尾 良夫, 久保田 達也, 杉岡 裕子, 古恵 亮

  日本地震学会2024年度秋季大会, Oct. 2024

  Oral presentation


• 海底地震計の開発が拓く地震観測研究のこれまでとこれから

  金澤 敏彦, 塩原 肇, 篠原 雅尚, 杉岡裕子, 一瀬建日, 山田知朗, 伊藤亜妃, 中東和夫, 望月将志, 渡邊智毅, 八木健夫

  日本地震学会2024年度秋季大会, Oct. 2024

  [Invited]

  Invited oral presentation


• Hypocenter determinations around Kikai caldera based on semblance analysis of DAS observation data

  中野 優, 中島 倫也, 荒木 英一郎, 杉岡 裕子, 伊藤 亜妃, 松本 浩幸, 横引 貴史, 利根川 貴志, 小野 重明

  日本火山学会2024年度秋季大会, Oct. 2024

  Poster presentation


• Imaging magma supply system of Kikai caldera by seismic tomography

  山本 揚二朗, 伊藤 亜妃, 石原 靖, 大林 政行, 田中 聡, 中道 治久, 八木原 寛, 仲谷 幸浩, 杉岡 裕子, 大塚 宏徳, 松野 哲男, 島 伸和

  日本火山学会2024年度秋季大会, Oct. 2024

  Oral presentation


• P-wave velocity structure around Kikai Caldera obtained by a global tomography

  大林 政行, 吉光 淳子, 山本 揚二朗, 伊藤 亜妃, 石原 靖, 田中 聡, 中道 治久, 八木原 寛, 仲谷 幸浩, 杉岡 裕子, 大塚 宏徳, 松野 哲男, 島 伸和

  日本火山学会2024年度秋季大会, Oct. 2024

  Poster presentation


• Revealing the beginning of;Slab Windows;a;he Chilean Triple Junction

  K. Azúa, S. Ide, S. Yano, S. Ruiz, H. Sugioka, H. Shiobara, A. Ito, M. Miller, H. Iwamori

  International Joint Workshop on Slow-to-Fast Earthquakes 2024, Sep. 2024

  Poster presentation


• Analysis of T-phases associated with the 2022 Tonga volcanic eruptions recorded by MERMAIDs

  Satoshi Murakami, Masayuki Obayashi, Hiroko Sugioka, Joel D Simon, Yong Yu, Junko Yoshimitsu, Yuko Kondo

  JpGU Meeting 2024, May 2024

  Oral presentation


• Seismic velocity structure at Kikai submarine caldera deduced from amphibious passive seismic observation

  Yojiro Yamamoto, Aki Ito, Yasushi Ishihara, Masayuki Obayashi, Satoru Tanaka, Haruhisa Nakamichi, Hiroshi Yakiwara, Yukihiro Nakatani, Hiroko Sugioka, Hironori Otsuka, Tetsuo Matsuno, Nobukazu Seama

  JpGU Meeting 2024, May 2024

  Oral presentation


• Acoustc stratigraphy and crustal deformation in Osaka Bay after the last glacial period

  Tomohiro Iwanami, Hironori Otsuka, Tetsuo Matsuno, Nobukazu Seama, Mari Hamahashi, Mamoru Sano, Hikaru Iwamaru, Keita Suzuki, Hiroko Sugioka

  JpGU Meeting 2024, May 2024

  Oral presentation


• Linear response of deep ocean to a moving tropical cyclone

  Ryo Furue, Yoshio Fukao, Hiroko Sugioka

  JpGU Meeting 2024, May 2024

  Poster presentation


• Structural controls on the spatial extent of tectonic tremors in Kumano-nada

  Takeshi Akuhara, Kazuya Shiraishi, Takeshi Tsuji, Yusuke Yamashita, Yoshihiro Ito, Atikul, Haque Farazi, Ohyanagi Shukei, Hiroko Sugioka, Eiichiro Araki, Takashi Tonegawa, Ryosuke Azuma, Ryota Hino, Kimihiro Mochizuki, Shunsuke Takemura, Tomoaki Yamada, Masanao Shinohara

  JpGU Meeting 2024, May 2024

  Oral presentation


• 3-D resistivity structure under the Kikai submarine caldera volcano.

  Takumi Obata, Masamitsu Araki, Toki Hirose, Tetsuo Matsuno, Takuto Minami, Yoshiya Usui, Hironori Otsuka, Hiroshi Ichihara, Yoshiyuki Tatsumi, Hiroko Sugioka, Nobukazu Seam

  JpGU Meeting 2024, May 2024

  Oral presentation


• Magma re-injection after the 7.3 ka Kikai-Akahoya eruption of the Kikai submarine caldera volcano

  Nobukazu Seama, Akihiro Nagaya, Gou Fujie, Satoshi Shimizu, Reina NAKAOKA, Satoru, Tanaka, Yojiro Yamamoto, Hiroki Miyamachi, Hiroko Sugioka, Shuichi Kodaira

  JpGU Meeting 2024, May 2024

  [Invited]


• Attempt to detect tsunami magnetic field using machine learning

  Chiaki Mita, Takuto Minami, Hiroaki Toh, Hiroko Sugioka

  JpGU Meeting 2024, May 2024

  Poster presentation


• Upper Mantle Seismic Velocity Structure beneath the Oldest Pacific Seafloor using Finite-frequency Tomography

  Hyunsun Kang, Younghee Kim, Shu-Huei Hung, PeiYing Patty Lin, Takehi Isse, Hitoshi Kawakatsu, Sang-Mook Lee, Hisashi Utada, Nozomu Takeuchi, Hajime Shiobara, Hiroko Sugioka, Seung-Sep Kim

  AGU Fall Meeting 2023, Dec. 2023, English

  Poster presentation


• Characterizing the heterogeneous seafloor sediment in the Western Pacific from passive ocean bottom seismic records

  HyeJeong Kim, Hitoshi Kawakatsu, Takeshi Akuhara, Nozomu Takeuchi, Takehi Isse, Hajime Shiobara, Hiroko Sugioka, Younghee Kim, Hisashi Utada, Sang-Mook Lee

  AGU Fall Meeting 2023, Dec. 2023, English

  Oral presentation


• The 15 January 2022 Hunga Tonga-Hunga Ha'apai Eruption as Recorded by MERMAIDs Adrift in the Pacific: Investigating the Effect of Bathymetric Occlusion on Hydroacoustic Signature

  Joel D. Simon, Yong Yu, Masayuki Obayashi, Hiroko Sugioka, Frederik Simons, Jessica C E Irving

  AGU Fall Meeting 2023, Dec. 2023, English

  Oral presentation


• Entries per page Restart of the ultra-deep broadband OBS (UDBBOBS) development

  Shiobara, H, A. Ito, H. Sugioka, M. Shinohara

  AGU Fall Meeting 2023, Dec. 2023, English

  Poster presentation


• New phase velocity measurement of Love waves for the oceanic upper-mantle using a two-mode approach

  T. Isse, Y. Kawano, A. Takeo, H. Kawakatsu, H. Shiobara, N. Takeuchi, H. Sugioka, Y. Kim, H. Utada, S.-M. Lee

  AGU Fall Meeting 2023, Dec. 2023, English

  Oral presentation


• MERMAIDで検出された2022年トンガ火山噴火に伴う T-phase解析

  村上 聡, 大林政行, 杉岡裕子, 吉光 淳子, Joel SIMON, Yong YU

  日本地震学会2023年度秋季大会, Nov. 2023, Japanese

  Oral presentation


• MERMAIDフロートによる南太平洋下における地震P波記録

  大林 政行, 近藤 優子, 吉光 淳子, 村上 聡, 杉岡, 裕子, Simon Joel

  日本地震学会2023年度秋季大会, Nov. 2023, Japanese

  Oral presentation


• 有限周波数トモグラフィによる南米中南部の深部速度構造推定

  近藤 優子, 大林 政行, 杉岡 裕子, 塩原 肇, 伊藤 亜妃, 篠原 雅尚, 岩森 光, 木下 正高, Miller Matthew, Tassara Carlos, Ojeda Javier

  日本地震学会2023年度秋季大会, Nov. 2023, Japanese

  Oral presentation


• Source-Scanning Algorithmを共通的に用いた浅部微動・浅部VLFEの時空間発展の推定

  根岸 幹, 小原 一成, 武村 俊介, 悪原 岳, 山下 裕亮, 杉岡 裕子, 篠原 雅尚

  日本地震学会2023年度秋季大会, Nov. 2023, Japanese

  Oral presentation


• 熊野灘におけるテクトニック微動の分布と伝播に見られる特徴： 海底臨時観測網およびDONETによる知見

  悪原 岳, 山下 裕亮, 杉岡 裕子, Farazi Atikul Haque, 大柳 修慧, 伊藤 喜宏, 荒木 英一郎, 利根川 貴志, 辻 健, 東 龍介, 日野 亮太, 望月 公廣, 武村 俊介, 山田 知朗, 篠原 雅尚

  日本地震学会2023年度秋季大会, Nov. 2023, Japanese

  Poster presentation


• プレート間ズルズル滑り：その始まりと成長

  深尾 良夫, 杉岡 裕子, 古恵 亮, 久保田 達也

  日本地震学会2023年度秋季大会, Oct. 2023, Japanese

  Oral presentation


• 機械学習を用いた津波誘導磁場検出手法の開発と実観測データによる検証

  美田 千璃, 南 拓人, 杉岡 裕子, 藤 浩明

  地球電磁気・地球惑星圏学会2023年秋学会, Sep. 2023

  Poster presentation


• 鬼界カルデラ火山海底下の三次元比抵抗構造解析

  小畑 拓実, 荒木 将允, 廣瀬 時, 松野 哲男, 南 拓人, 大塚 宏徳, 巽 好幸, 杉岡 裕子, 市原, 寛, 島 伸和

  地球電磁気・地球惑星圏学会2023年秋学会, Sep. 2023

  Oral presentation


• Shallow fault-related folding and late Quaternary slip rate of the Osaka Bay Fault, western Japan

  Mari Hamahashi, Hironori Otsuka, Yoshiaki Suzuki, Jun Arimoto, Tetsuo Matsuno, Nobukazu Seama, Yuzuru Yamamoto, Hiroko Sugioka, Stephen A. Bowden, Satoshi Shimiz, Hikaru Iwamaru, Mamoru Sano, Keita Suzuki, Katsuya Kaneko, Kazuo Nakahigashi, Yoshiyuki Tatsumi

  International Joint Workshop on Slow-to-Fast Earthquakes 2023, Sep. 2023

  Poster presentation


• Tectonic tremor distribution and migration at Kumano-nada: insights from ocean-bottom seismometer deployment

  Takeshi Akuhara, Yusuke Yamashita, Hiroko Sugioka, Atikul Haque Farazi, Shukei Ohyanagi, Yoshihiro Ito, Eiichiro Araki, Takashi Tonegawa, Takeshi Tsuji, Ryosuke Azuma, Ryota Hino, Kimihiro Mochizuki, Shunsuke Takemura, Tomoaki Yamada, Masanao Shinohara

  International Joint Workshop on Slow-to-Fast Earthquakes 2023, Sep. 2023

  Poster presentation


• Mapping the source of shallow tremors and VLFEs commonly using Source-Scanning Algorithm

  Motoki NEGISHI, Kazushige OBARA, Shunsuke TAKEMURA, Takeshi AKUHARA, Yusuke YAMASHITA, Hiroko SUGIOKA, Masano SHINOHARA

  International Joint Workshop on Slow-to-Fast Earthquakes 2023, Sep. 2023

  Poster presentation


• サブボトムプロファイラーデータによって明らかになった大阪湾における小断層の分布と沖積層の音響層序区分

  岩波 知宏, 大塚 宏徳, 松野 哲男, 島 伸和, 浜橋 真理, 佐野 守, 井和丸 光, 鈴木 啓太, 杉岡 裕子

  日本地質学会第130年学術大会, Sep. 2023, Japanese

  Oral presentation


• Detection, location and characterization of seismic swarms associated with ridge subduction

  Hiroko Sugioka

  日本地球惑星科学連合2023年大会, May 2023, English

  Poster presentation


• Seismic velocity structure beneath South America from finite-frequency tomography

  近藤 優子, 大林 政行, 杉岡 裕子, 塩原 肇, 伊藤 亜妃, 篠原 雅尚, 岩森 光, 木下 正高, Matthew Miller, Carlos Tassara, Javier Ojeda

  日本地球惑星科学連合2023年大会, May 2023, English

  Oral presentation


• Locating tectonic tremors with uncertainty estimates: optimizing time- and amplitude-differences, wave propagation-based quality control, and Bayesian inversion

  悪原 岳, 山下 裕亮, 杉岡 裕子, 篠原 雅尚

  日本地球惑星科学連合2023年大会, May 2023, Japanese

  Oral presentation


• Dyke swarms in the oceanic lithosphere beneath the Ontong Java Plateau as inferred from Po/So waves

  志藤 あずさ, 末次 大輔, 石川 晃, 一瀬 建日, 塩原 肇, 杉岡 裕子, 伊藤 亜妃, 石原 靖, 田中 聡, 大林 政行, 利根川 貴志, 吉光 淳子

  日本地球惑星科学連合2023年大会, May 2023, Japanese

  Oral presentation


• 屈折法地震探査によって明らかになった鬼界カルデラ海底火山地下の低速度異常

  長屋 暁大, 藤江 剛, 小平 秀一, 田中 聡, 山本 揚二朗, 杉岡 裕子, 宮町 宏樹, 松野 哲男, 大塚 宏徳, 鈴木 啓太, 島 伸和

  日本地球惑星科学連合2023年大会, May 2023, Japanese

  Oral presentation


• Water pressure drop at 5000m-deep seafloor directly below the central air pressure drop of the Typhoon 201514

  深尾 良夫, 杉岡 裕子, 塩原 肇, 伊藤 亜妃, 古恵 亮

  日本地球惑星科学連合2023年大会, May 2023, Japanese

  Oral presentation


• 機械学習による津波誘導磁場検出の試み

  美田 千璃, 南 拓人, 杉岡 裕子

  日本地球惑星科学連合2023年大会, May 2023, Japanese

  Poster presentation


• Imaging 3D resistivity structure under the seafloor of Kikai caldera volcano

  小畑 拓実, 荒木 将允, 廣瀬 時, 松野 哲男, 南 拓人, 大塚 宏徳, 巽 好幸, 杉岡 裕子, 羽生 毅, 田中 聡, 市原 寛, 島 伸和

  日本地球惑星科学連合2023年大会, May 2023, Japanese

  Oral presentation


• Heterogeneous seismic structure at Hyuga-nada from receiver-side Green's functions

  佐脇 泰典, 山下 裕亮, 大柳 修慧, Garcia Emmanuel Soliman, 伊藤 亜妃, 杉岡 裕子, 高橋 努, 篠原 雅尚, 伊藤 喜宏

  日本地球惑星科学連合2023年大会, May 2023, Japanese

  [Invited]

  Invited oral presentation


• 浅部テクトニック微動の高精度震源決定に向けた手法開発

  悪原岳, 山下裕亮, 杉岡裕子, 篠原雅尚

  海と地球のシンポジウム2022, Mar. 2023, Japanese

  Oral presentation


• 鬼界カルデラ火山海底下の三次元比抵抗構造解析

  小畑拓実, 荒木将允, 廣瀬時, 沖園雄希, 松野哲男, 南拓人, 大塚宏徳, 巽好幸, 杉岡裕子, 島伸和, 羽生毅, 田中聡, 市原寛

  海と地球のシンポジウム2022, Mar. 2023, Japanese

  Oral presentation


• 屈折法地震波構造探査によって明らかになった 鬼界カルデラ火山直下の低速度領域

  長屋暁大, 藤江剛, 小平秀一, 田中聡, 山本揚二朗, 杉岡裕子, 宮町宏樹, 松野哲男, 大塚宏徳, 鈴木啓太, 島伸和

  海と地球のシンポジウム2022, Mar. 2023, Japanese

  Oral presentation


• Long-term ocean bottom seismic array observation at the Chile Triple Junction

  Hajime Shiobara, Aki Ito, Matthew Miller, Hiroko Sugioka, Javier Ojeda, Carlos Tassara, Masanao Shinohara, Masataka Kinoshita, Hikaru Iwamori

  AGU Fall Meeting 2022, Dec. 2022, English

  Poster presentation


• A “rapid” aseismic slip multiplet of Mw7.1 in the Izu-Bonin Trench

  Yoshio Fukao, Tatsuya Kubota, Hiroko Sugioka, Ryo Furue

  AGU Fall Meeting 2022, Dec. 2022, English

  Oral presentation


• Spatial Relationship of Shallow Slow Earthquake and Strong Negative Velocity Impedance in the Western Nankai Subduction Zone

  Yasunori Sawaki, Yusuke Yamashita, Shukei Ohyanagi, Emmanuel Garcia, Aki Ito, Hiroko Sugioka, Tsutomu Takahashi, Masanao Shinohara, Yoshihiro Ito

  AGU Fall Meeting 2022, Dec. 2022, English

  Oral presentation


• Finite-frequency Tomography in the Chile Triple Junction Region

  Kondo, Y, Obayashi, M, Sugioka, H, Ito, A, Shiobara, H Shinohara, M, Iwamori, H., Kinoshita, M., Matthew Miller, Carlos Tassara, Javier Ojeda

  SSA Seismic Tomography, Oct. 2022, English

  Poster presentation


• 紀伊半島南東沖における稠密海底地震計アレイを用いた2020年12月に開始した浅部スロー地震活動の観測

  根岸 幹, 小原 一成, 武村 俊介, 悪原 岳, 山下 裕亮, 杉岡 裕子, 篠原 雅尚

  日本地震学会2022年度秋季大会, Oct. 2022, Japanese

  Poster presentation


• 海底面での機動的傾斜観測実現に向けた長期試験観測： 温度係数

  塩原 肇, 篠原 雅尚, 佐藤 利典, 伊藤 亜妃, 杉岡 裕子

  日本地震学会2022年度秋季大会, Oct. 2022, Japanese

  Oral presentation


• MERMAIDハイドロフォンアレイで捉えたフンガ・トンガ噴火

  大林 政行, 吉光 淳子, 杉岡 裕子, Joel Simon, Yu Yong

  日本地震学会2022年度秋季大会, Oct. 2022, Japanese

  Oral presentation


• 深海ボア：海溝斜面を遡る流速・水温・水圧の不連続面

  深尾 良夫, 杉岡 裕子, 塩原 肇, 伊藤 亜妃, Kim Taewoo, 古恵 亮

  日本地震学会2022年度秋季大会, Oct. 2022, Japanese

  Oral presentation


• 屈折法地震波探査による鬼界カルデラ地下の地震波速度構造の推定

  長屋 暁大, 藤江 剛, 小平 秀一, 田中 聡, 山本 揚二朗, 杉岡 裕子, 宮町 宏樹, 松野 哲男, 大塚 宏徳, 鈴木 啓太, 島 伸和

  日本地震学会2022年度秋季大会, Oct. 2022, Japanese

  Oral presentation


• 南海トラフ浅部沈み込み帯における地震学的構造の時間変化とスロー地震との関連

  利根川 貴志, 悪原 岳, 山下 裕亮, 杉岡 裕子, 篠原 雅尚, 武村 俊介, 辻 健

  日本地震学会2022年度秋季大会, Oct. 2022, Japanese

  Oral presentation


• 屈折法地震探査によって推定された鬼界カルデラ 地下の地震波速度構造

  長屋暁大, 藤江 剛, 小平秀一, 田中 聡, 山本揚二朗, 杉岡裕子, 宮町宏樹, 松野哲男, 大塚宏徳, 鈴木啓太, 島 伸和

  日本火山学会2022年度秋季大会, Oct. 2022, Japanese

  Oral presentation


• Po/So waves traveling in the Ontong Java Plateau

  志藤 あずさ, 末次 大輔, 一瀬 建日, 塩原 肇, 杉岡 裕子, 伊藤 亜妃, 石原 靖, 田中 聡, 大林 政行, 利根川 貴志, 吉光 淳子

  JpGU Meeting 2022, Jun. 2022, English

  Poster presentation


• Amphibious passive seismic observation at Kikai submarine caldera

  山本 揚二朗, 伊藤 亜妃, 石原 靖, 大林 政行, 田中 聡, 中道 治久, 八木原 寛, 仲谷 幸浩, 杉岡 裕子, 大塚 宏徳, 松野 哲男, 島 伸和

  JpGU Meeting 2022, Jun. 2022, Japanese

  Poster presentation


• Olivine Fabrics in the Oceanic Lithosphere Constrained by the Pn Azimuthal Anisotropy

  竹内 希, 一瀬 建日, 川勝 均, 塩原 肇, 杉岡 裕子, 伊藤 亜妃, 歌田 久司

  JpGU Meeting 2022, Jun. 2022, English

  Poster presentation


• Seismological Property and Structure beneath the Seafloor at the Hyuga-nada, Estimated Using Ocean Bottom Seismographs

  佐脇 泰典, 山下 裕亮, 大柳 修慧, mmanuel Soliman Garcia, 伊藤 亜妃, 杉岡 裕子, 高橋 努, 篠原 雅尚, 伊藤 喜宏

  JpGU Meeting 2022, Jun. 2022, English

  Poster presentation


• Three-year seismic observation by hydrophone float

  大林 政行, 杉岡 裕子, 吉光 淳子, Simon Joel

  JpGU Meeting 2022, Jun. 2022, English

  Poster presentation


• Seismoacoustic signals accompany slow slip events at the front of the Izu-Bonin convergent margin

  杉岡 裕子, Le, Bras Ronan

  JpGU Meeting 2022, May 2022, English

  Poster presentation


• Travel time anomalies in Chile Triple Junction region

  近藤 優子, 大林 政行, 杉岡 裕子, 塩原 肇, 伊藤 亜妃, 篠原 雅尚, 岩森 光, 木下 正高, Matthew Miller, Carlos Tassara, Javier Ojeda

  JpGU Meeting 2022, May 2022, English

  Poster presentation


• Long-term seafloor seismic observation at the Chile triple junction

  伊藤 亜妃, 塩原 肇, 杉岡 裕子, 篠原 雅尚, 岩森 光, 木下 正高, Miller Matthew, Tassara Carlos, Ojeda Javier

  JpGU Meeting 2022, May 2022, Japanese

  Poster presentation


• Broadband dispersion analysis of Love waves: a case study in the oldest Pacific Ocean

  川野 由貴, 一瀬 建日, 竹尾 明子, 川勝 均, 塩原 肇, 竹内 希, 杉岡 裕子, Kim YoungHee, 歌田 久司, Lee, Sang-Mook

  JpGU Meeting 2022, May 2022, English

  Oral presentation


• Frequent occurrence of “rapid” aseismic slip events at the Izu-Bonin Trench

  深尾 良夫, 久保田 達矢, 杉岡 裕子, 古恵 亮

  JpGU Meeting 2022, May 2022, English

  Oral presentation


• Late Pleistocene to Holocene dynamic basin environment at the Osaka Bay: Stratigraphic expressions of tectonic deformation, sea level fluctuation, and tidal waves

  浜橋 真理, 大塚 宏徳, 鈴木 克明, 有元 純, 山本 由弦, 島 伸和, Bowden Stephe, 松野 哲男, 杉岡 裕子, 清水 賢, 井和丸 光, 佐野 守, 鈴木 啓太, 金子 克哉, 中東 和夫, 巽 好幸

  JpGU Meeting 2022, May 2022, English

  Oral presentation


• Seismic Velocity Structure of Upper Mantle Beneath the Oldest Pacific Ocean Basin: Insights from Finite-frequency Tomography

  Hyunsun Kang, Younghee Kim, Shu-Huei Hung, PeiYing Patty Lin, Takehi Isse, Hajime Shiobara, Hitoshi Kawakatsu, Sang-Mook Lee, Hisashi Utada, Nozomu Takeuchi, Hiroko Sugioka

  AGU Fall meeting 2021, Dec. 2021, English

  Oral presentation


• 鬼界カルデラにおけるDASを用いた地震動、エアガン観測

  中野 優, 杉岡 裕子, 荒木 英一郎, 中島 倫也, 伊藤 亜妃, 松本 浩幸, 横引 貴史, 利根川 貴志, 山本 揚二朗, 木村 俊則, 藤江 剛, 田中 聡

  日本地震学会2021年度秋季大会, Oct. 2021, Japanese

  Oral presentation


• 深尾 良夫1、久保田 達也2、杉岡 裕子3、伊藤 亜妃1、利根川 貴志1、塩原 肇4、山下 幹也5、齊藤 竜彦

  塩原 肇, 佐藤 利典, 金 慧貞, 川野 由貴, 永井 はるか, 伊藤 亜妃, 篠原 雅尚, 杉岡 裕子

  日本地震学会2021年度秋季大会, Oct. 2021, Javanese

  Oral presentation


• 地震滑りとスロースリップとを繋ぐ遷移領域滑りの検出

  深尾 良夫, 久保田 達也, 杉岡 裕子, 伊藤 亜妃, 利根川 貴志, 塩原 肇, 山下 幹也, 齊藤 竜彦

  日本地震学会2021年度秋季大会, Oct. 2021, Japanese

  Oral presentation


• 表面波波形フィッティングによる海洋地殻および上部マントルのS波速度構造の推定 ー 短周期成分を活用した初期モデルの構築 ー

  永井 はるかl, 竹内 希, 川勝 均, 塩原 肇, 一瀬 建日, 杉岡 裕子, 伊藤 亜妃, 歌田 久司

  日本地震学会2021年度秋季大会, Oct. 2021, Japanese

  Oral presentation


• ベイズ統計を用いた震源決定法に対する3次元走時計算適用の検討

  近藤優子, 杉岡裕子, 大林政行

  日本地震学会2021年度秋季大会, Oct. 2021, Japanese

  Oral presentation


• Shallow tremor activity in the Hyuga-nada revealed by the seafloor observation of “Science of Slow earthquakes”

  Yusuke Yamashita, Masanao Shinohara, Hiroko Sugioka, Aki Ito, Tsutomu Takahashi, Daisuke Suetsugu

  JpGU Meeting 2021, Jun. 2021, English

  Oral presentation


• Moment tensor inversion of shallow very low-frequency earthquakes in the northern Ryukyu subduction zone and the Hyuga-nada region

  Aki Ito, Hiroko Sugioka, Masaru Nakano, Yusuke Yamashita, Masanao Shinohara, TsutomuTakahashi, Daisuke Suetsugu, Takashi Tonegawa

  JpGU Meeting 2021, Jun. 2021, English

  Poster presentation


• Characteristics of seismic signals associated with the hydrothermal system beneath a giant submarine caldera

  Hiroko Sugioka

  JpGU Meeting 2021, Jun. 2021, English

  Poster presentation


• Preliminary results of ocean bottom pressure observation around Kikai submarine caldera, SW Japan

  Yuko Asai, Nobukazu Seama, Tomoko Hanyu, Tetsuo Matsuno, Hitoshi Hirose, Takuto Minami, Hiroko Sugioka

  JpGU Meeting 2021, Jun. 2021, English

  Oral presentation


• Two-year seismic observation by hydrophone floats

  Masayuki Obayashi, Hiroko Sugioka, Junko Yoshimitsu

  JpGU Meeting 2021, Jun. 2021, English

  Oral presentation


• Seismic structure of the lithosphere-asthenosphere system beneath the oldest seafloor revealed by the broadband dispersion analysis of the Oldest-1 Array

  Yuki Kawano, Takehi Isse, Akiko Takeo, Hitoshi Kawakatsu, Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, YoungHee Kim, Hisashi Utada, Sang-Moon Lee

  JpGU Meeting 2021, Jun. 2021, English

  Oral presentation


• Application of the wavefield decomposition for the Oldest-1 array data

  Hitoshi Kawakatsu, Takehi Isse, Nozomu Takeuchi, Hajime Shiobara, Hiroko Sugioka, YoungHee Kim, Hisashi Utada, Sang-Mook Lee

  JpGU Meeting 2021, Jun. 2021, English

  Oral presentation


• Surface wave envelope fitting for S wave velocity structure of the oceanic upper mantle

  Haruka Nagai, Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  JpGU Meeting 2021, Jun. 2021, English

  Oral presentation


• Receiver function imaging of the amphibious NE Japan subduction zone - effects of low-velocity sediment layer-

  HyeJeong Kim, Hitoshi Kawakatsu, Takeshi Akuhara, Masanao Shinohara, Hajime Shiobara, Hiroko Sugioka, Ryota Takagi

  JpGU Meeting 2021, Jun. 2021, English

  Oral presentation


• Rupture and tsunami generation process of the 2015 Mw 5.9 Bonin earthquake revealed by in-situ pressure gauge array observations and an integrated simulation of seismic and tsunami waves

  Tatsuya Kubota, Tatsuhiko Saito, Yoshio Fukao, Hiroko Sugioka, Aki Ito, Takashi Tonegawa, Hajime Shiobara, Mikiya Yamashita

  AGU Fall meeting 2020, Dec. 2020, English

  Oral presentation


• Detection of “rapid” aseismic slip that bridges a gap between seismic slip and slow slip

  Yoshio Fukao, Tatsuya Kubota, Hiroko Sugioka, Aki Ito, Takashi Tonegawa, Hajime Shiobara, Mikiya Yamashita, Tatsuhiko Saito

  AGU Fall meeting 2020, Dec. 2020, English

  Oral presentation


• Seismic Sampling of the Mantle Under the South Pacific With a Drifting Array of Autonomous MERMAID Floats

  Joel D. Simon, Frederik Simons, Jessica C E Irving, Guust Nolet, Yann Hello, Hiroko Sugioka, Masayuki Obayashi, Yongshun John Chen, Olivier Hyvernaud

  AGU Fall meeting 2020, Dec. 2020, English

  [Invited]

  Invited oral presentation


• Three dimensional shear wave structure in the upper mantle beneath the oldest Pacific plate

  Takehi Isse, Hitoshi Kawakatsu, Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, Younghee Kim, Hisashi Utada, Sang-Mook Lee, Kazunori Yoshizawa

  Dec. 2020, English

  Oral presentation


• Seismic structure of the lithosphere-asthenosphere system beneath the oldest seafloor – the broadband dispersion analysis of the Oldest-1 (Pacific Array) data

  Yuki Kawano, Takehi Isse, Akiko Takeo, Hitoshi Kawakatsu, Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, Younghee Kim, Hisashi Utada, Sang-Mook Lee

  AGU Fall meeting 2020, Dec. 2020, English

  Oral presentation


• Upper Mantle P-wave Velocity Structure beneath the Oldest Pacific Ocean Basin from Finite-frequency P-wave Traveltime Tomography

  Hyunsun Kang, Younghee Kim, Shu-Huei Hung, PeiYing Patty Lin, Takehi Isse, Hajime Shiobara, Hitoshi Kawakatsu, Sang-Mook Lee, Hisashi Utada, Nozomu Takeuchi, Hiroko Sugioka

  AGU Fall meeting 2020, Dec. 2020, English

  Oral presentation


• Detection of hydroacoustic signals associated with the 2015 Torishima volcanic tsunami earthquake

  Hiroko Sugioka, Natsuo Nemoto

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Poster presentation


• The Oldest Array: Japan-Korea Pacific Array collaboration to study the lithosphere-asthenosphere system below the oldest part of the Pacific Ocean

  Hajime Shiobara, Hisashi Utada, Seung-Sep Kim, YoungHee Kim, Kiyoshi Baba, Takehi Isse, Hogyum Kim, Hiroko Sugioka, Nozomu Takeuchi, Yuki Kawano, Hitoshi Kawakatsu, Sang-Mook Lee

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• Topography on the mantle discontinuities beneath the Ontong Java Plateau

  Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• The seismic structure of the oldest Pacific: Preliminary results from the broadband Rayleigh-wave dispersion analysis of the Pacific Array, Oldest-1

  Yuki Kawano, Takehi Isse, Akiko Takeo, Hitoshi Kawakatsu, Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, YoungHee Kim, Hisashi Utada, Sang-Mook Lee

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• Three dimensional shear wave structure in the upper mantle beneath the oldest Pacific plate

  Takehi Isse, Hitoshi Kawakatsu, Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, YoungHee Kim, Hisashi Utada, Sang-Mook Lee, Kazunori Yoshizawa

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• Seismic monitoring by autonomous floats to image Earth’s interior

  Masayuki Obayashi, Hiroko Sugioka, Yann Hello, Frederik Simons, Yongshun Chen, Guust Nolet

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• Strain release by “rapid” aseismic slip at the Izu-Bonin trench

  Yoshio Fukao, Hiroko Sugioka, Aki Ito, Takashi Tonegawa, Mikiya Yamashita, Hajime Shiobara, Tatsuya Kubota, Tatsuhiko Saito

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• P Velocity Heterogeneities in the Upper Mantle beneath the Northwestern Pacific

  Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• Repeating activity of shallow low-frequency tremor in Hyuga-nada

  Yusuke Yamashita, Masanao Shinohara, Hiroko Sugioka, Aki Ito, Tsutomu Takahashi, Daisuke Suetsugu

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• Tectonic tremors in southern Chile, observed in three space-time windows

  Satoshi Ide, Saez Miguel, Ruiz Sergio, Hiroko Sugioka, Miller Matthew

  JpGU-AGU Joint Meeting 2020, Jul. 2020, English

  Oral presentation


• Detection of volcanic earthquakes and estimation of internal attenuation structure beneath the Kikai submarine caldera

  Yasutomo Seto, Hiroko Sugioka, Tsutomu Takahashi, Yojiro Yamamoto

  JpGU-AGU Joint Meeting 2020, Jul. 2020

  Poster presentation


• Continuous imaging of the subducting Pacific plate under Japan using receiver function analysis of the amphibious array data

  HyeJeong Kim, Hitoshi Kawakatsu, Takeshi Akuhara, Masanao Shinohara, Hajime Shiobara, Hiroko Sugioka, Ryota Takagi

  AGU Fall Meeting 2019, Dec. 2019, English

  Oral presentation


• Mobile Earthquake Recording in Marine Areas by Independent Divers:New features–and Results from SPPIM, its First Big Deployment in the South Pacific

  Yann Hello, Joel D Simon, Yongshun John Chen, Masayuki Obayashi,, Hiroko Sugioka, Olivier Philippe, Frederik Simons, Guust Nolet

  AGU Fall Meeting 2019, Dec. 2019, English

  Poster presentation


• Shear wave upper mantle structure beneath the Ontong Java Plateau

  Takahi Isse, Daisuke Suetsugu, Akira Ishikawa, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yuki Kawano, Kazunori Yoshizawa, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi

  AGU Fall Meeting 2019, Dec. 2019, English

  Poster presentation


• P-wave upper mantle structures beneath the Ontong Java Plateau

  Masayuki Obayashi, Junko Yoshimitsu, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Takashi Tonegawa, Takumi Kobayashi

  AGU Fall Meeting 2019, Dec. 2019, English

  Poster presentation


• Inversion of Longer Period OBS Waveforms for P Structures in the Oceanic Lithosphere and Asthenosphere

  Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  AGU Fall Meeting 2019, Dec. 2019, English

  Oral presentation


• One Year, Fifteen Hundred MERMAID Seismograms from the South Pacific

  Joel D Simon, Frederik Simons, Guust Nolet, Yann Hello, Hiroko Sugioka, Masayuki Obayashi, Yongshun John Chen

  AGU Fall Meeting 2019, Dec. 2019, English

  [Invited]

  Invited oral presentation


• Array analysis of OBS recordings at Ontong Java Plateau: Preliminary analysis via seismic interferometry

  Yuki Kawano, Takehi Isse, A. Takeo, H. Kawakatsu, D. Suetsugu, H. Shiobara, H. Sugioka, A. Ito, Y. Ishihara, S. Tanaka, M. Obayashi, T. Tonegawa, J. Yoshimitsu, T. Kobayashi

  AGU Fall Meeting 2019, Dec. 2019, English

  Poster presentation


• P-wave Velocity Structures beneath the Ontong Java Plateau

  M. Obayashi, J. Yoshimitsu, D. Suetsugu, H. Shiobara, H. Sugioka, A. Ito, T. Isse, Y. Ishihara, S. Tanaka, T. Tonegawa, T. Kobayashi

  The 27th IUGG General Assembly, Jul. 2019, English

  Poster presentation


• Surface Wave Tomography for the Pacific Ocean Incorporating Seafloor Seismic Observations and Plate Thermal Evolution

  T. Isse, H. Kawakatsu, K. Yoshizawa, A. Takeo, H. Shiobara, H. Sugioka, A. Ito, D. Suetsugu, D. Reymond

  The 27th IUGG General Assembly, Jul. 2019, English

  Poster presentation


• New Era of Ocean Bottom Broadband Seismology with Penetrator Sensor System of the Autonomous BBOBS-NX (NX-2G)

  H. Shiobara, A. Ito, H. Sugioka, M. Shinohara

  The 27th IUGG General Assembly, Jul. 2019, English

  Oral presentation


• Ocean Bottom Electromagnetometers Recorded Signals Possibly Associated with Eruptive and Non-eruptive Events of Nishinoshima Island Volcano, Japan

  K. Baba, N. Tada, H. Ichihara, Y. Hamano, H. Sugioka, T. Koyama, A. Takagi, M. Takeo

  The 27th IUGG General Assembly, Jul. 2019, English

  Poster presentation


• A new floatlng hydrophone instrument in the SOFAR channel

  H. Sugioka, M. Obayashi

  The 27th IUGG General Assembly, Jul. 2019, English, Montreal Convention Centre (Palais des congres de Montreal), International conference

  Poster presentation


• Drifting float measurement of pressure change by tsunami

  Masayuki Obayashi, Shingo Watada, Hiroko Sugioka

  Japan Geoscience Union Meeting 2019, May 2019, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• An investigation of three-dimensional electrical resistivity structure under Kikai Caldera

  Tetsuo Matsuno, Toki Hirose, Yuuki Okizono, Nobukazu Seama, Hiroshi Ichihara, Hiroko Sugioka, Yoshiyuki Tatsumi

  Japan Geoscience Union Meeting 2019, May 2019, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• The Analysis of magnetotelluric sounding data on Kikai submarine caldera

  Toki Hirose, Tetsuo Matsuno, Nobukazu Seama, Yuki Okizono, Hiroshi Ichihara, Hiroko Sugioka, Yoshiyuki Tatsumi

  Japan Geoscience Union Meeting 2019, May 2019, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• Seismic activity beneath Kikai Caldera by using Ocean Bottom Observation

  Yasutomo Seto, Hiroko Sugioka, Yojiro Yamamoto, Tsutomu Takahashi

  Japan Geoscience Union Meeting 2019, May 2019, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• Seismic monitoring by an autonomous robotic float equipped with ahydrophone: MERMAID

  Masayuki Obayashi, Hiroko Sugioka

  Japan Geoscience Union Meeting 2019, May 2019, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• Geophysical-petrological studies of the Chile triple junction and theirsignificance: MIRAI research cruise MR-1806Leg2

  Masataka Kinoshita, Hikaru Iwamori, Tomoaki Nishikawa, Ryo Anma, Lagarrigue Sofia, Natsue Abe, Yuka Yokoyama, Espinosa Andres, Cortes Alessandra, Prado Gabriela, Bascuñan Ivan, Satoru Haraguch, Kosuke Ota, Yuji Orihashi, Kaishi Nakao, Shogo Numata, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Pérez-Estay Nicolás

  Japan Geoscience Union Meeting 2019, May 2019, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• Summary of Kikai submarine caldera researches conducted by KOBEC(Kobe Ocean-Bottom Exploration Center)

  Nobukazu Seama, Tetsuo Matsuno, Koji Kiyosug, Satoshi Shimizu, Reina Nakaoka, Keiko Suzuki-Kamata, Yasutomo Seto, Mamoru Sano, Yuiko Morita, Hikaru Iwamaru, Haruhisa Morozumi, Misaki Horiuchi, Kimihiro Nishimura, Hiroshi Ichihara, Kazuki Hayashi, Toki Hirose, Katsuya Kaneko, Hiroto Yamaguchi, Yuki Okizono, Hiroko Sugioka, Kazuo Nakahigashi, Yojiro Yamamoto, Tatsuya Koda, Shuichi Kodaira, Yoshiyuki Tatsumi, Scientific Party of T, S Fukae-maru, Kikai caldera, research cruises

  Japan Geoscience Union Meeting 2019, May 2019, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• Shear wave structure of the upper mantle beneath the Ontong Java Plateau

  Takehi Isse, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi, Kazunori Yoshizawa

  Japan Geoscience Union Meeting 2019, May 2019, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• New Constraints on Seismological Structures of the Oceanic Asthenosphere

  Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  Japan Geoscience Union Meeting 2019, May 2019, English, Makuhari Messe, Chiba, International conference

  [Invited]

  Invited oral presentation


• New Constraints on Seismological Structures of the Oceanic Asthenospher

  Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  Japan Geoscience Union Meeting 2019, May 2019, English, Makuhari Messe, Chiba, International conference

  [Invited]

  Invited oral presentation


• Installation of a floating hydrophone system within the SOFAR channel

  Hiroko Sugioka, Masayuki Obayashi

  Japan Geoscience Union Meeting 2019, May 2019, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• Finite frequency S wave tomography model beneath the Ontong Java Plateau using data recorded by broadband ocean bottom seismographs

  Misaki Horiuchi, Hiroko Sugioka, Masayuki Obayashi, Daisuke Suetsugu, Hajime Shiobara, Aki Ito, Yasushi Ishihara, Satoru Tanaka, Takehi Isse, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi

  Japan Geoscience Union Meeting 2019, May 2019, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• The First Data of the Autonomous BBOBS-NX (NX-2G) for New Era of Ocean Bottom Broadband Seismology

  Hajime Shiobara, Aki Ito, Hiroko Sugioka, Masanao Shinohara

  American Geophysical Union(AGU) Fall Meeting 2018, Dec. 2018, English, Washington, D.C., International conference

  Poster presentation


• Surface wave tomography for the Pacific Ocean incorporating seafloor seismic observations and its age-dependence

  Takehi Isse, Hitoshi Kawakatsu, Kazunori Yoshizawa, Akiko Takeo, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Daisuke Suetsugu, Dominique Reymond

  American Geophysical Union Fall Meeting 2018, Dec. 2018, English, Washington, D.C., International conference

  Oral presentation


• Seafloor detection of multiple aseismic transients with an intervening seismic shock at the Izu-Bonin Trench

  Yoshio Fukao, Hiroko Sugioka, Aki Ito, Mikiya Yamashita, Takashi Tonegawa, Hajime Shiobara

  American Geophysical Union Fall Meeting 2018, Dec. 2018, English, Washington, D.C., International conference

  Oral presentation


• Receiver function imaging at the crust and uppermost mantle of Ontong Java Plateau

  Takashi Tonegawa, Daisuke Suetsugu, Seiichi Miura, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Junko Yoshimitsu, Takumi Kobayashi

  American Geophysical Union(AGU) Fall Meeting 2018, Dec. 2018, English, Washington, D.C., International conference

  Oral presentation


• Non-Volcanic Tremor activity in the Chile Triple Junction detected by OBS stations

  Miguel Saez, Sergio Ruiz, Satoshi Ide, Hiroko Sugioka

  American Geophysical Union(AGU) Fall Meeting 2018, Dec. 2018, English, Washington, D.C., International conference

  Poster presentation


• Event size distribution of shallow tectonic tremor in the Nankai trough

  Masaru Nakano, Suguru Yabe, Hiroko Sugioka, Satoshi Ide

  American Geophysical Union(AGU) Fall Meeting 2018, Dec. 2018, English, Washington, D.C., International conference

  Oral presentation


• 浅部低周波微動のサイズ－頻度分布

  中野 優, 矢部 優, 杉岡 裕子, 井出 哲

  日本地震学会2018年度秋季大会, Oct. 2018, Japanese, ビッグパレットふくしま, Domestic conference

  Oral presentation


• 小笠原海溝沿いの地震を伴う海底地殻変動

  深尾 良夫, 伊藤 亜紀, 山下 幹也, 利根川 貴史, 杉岡 裕子, 塩原 肇, 東野 陽子

  日本地震学会2018年度秋季大会, Oct. 2018, Japanese, ビッグパレットふくしま, Domestic conference

  Oral presentation


• オントン・ジャワ海台下のP波速度構造

  大林 政行, 吉光 淳子, 末次 大輔, 塩原 肇, 杉岡 裕子, 伊藤 亜妃, 一瀬 建日, 石原 靖, 田中 聡, 利根川 貴志, 小林 拓史

  日本地震学会2018年度秋季大会, Oct. 2018, Japanese, ビッグパレットふくしま, Domestic conference

  Oral presentation


• P波波形を用いた海洋アセノスフェアの構造推定

  竹内 希, 川勝 均, 塩原 肇, 一瀬 建日, 杉岡 裕子, 伊藤 亜妃, 歌田 久司

  日本地震学会2018年度秋季大会, Oct. 2018, Japanese, ビッグパレットふくしま, Domestic conference

  Oral presentation


• Tsunami Source Modeling for the 2015 Volcanic Tsunami Earthquake Near Torishima, South of Japan

  Osamu Sandanbata, Shingo Watada, Kenji Satake, Yoshio Fukao, Hiroko Sugioka, Aki Ito, Hajime Shiobara

  Asia Oceania Geosciences Society(AOGS) 15th Annual Meeting, Jun. 2018, English, Honolulu, Hawaii, International conference

  Oral presentation


• 離島火山活動のリモートモニタリングの実現

  杉岡 裕子, 浜野 洋三, 市原 美恵, 多田 訓子, 西田 究, 武尾 実

  日本地球惑星科学連合2018年大会, May 2018, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• The characteristics of seismic stratigraphic facies of Kikai submarine caldera and off the southern Kyusyu

  Satoshi Shimizu, Hikaru Iwamaru, Nobukazu Seama, Tetsuo Matsuno, Hiroshi Ichihara, Mamoru Sano, Hiroko Sugioka, Kazuo Nakahigashi, Yojiro Yamamoto, Kimihiro Nishimura, Yuka Furukawa, Misaki Horiuchi, Toki Hirose, Yasutomo Seto, Yoshiyuki Tatsumi

  Japan Geoscience Union Meeting 2018, May 2018, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• 火山性津波地震のメカニズム Part I：概要

  深尾 良夫, 三反畑 修, 杉岡 裕子, 伊藤 亜紀, 塩原 肇, 綿田 辰吾, 佐竹 健治

  日本地球惑星科学連合2018年大会, May 2018, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• 火山性津波地震のメカニズム Part II：津波解析

  三反畑 修, 綿田 辰吾, 佐竹 健治, 深尾 良夫, 杉岡 裕子, 伊藤 亜妃, 塩原 肇

  日本地球惑星科学連合2018年大会, May 2018, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• ウェーブグライダーを用いた海上インフラサウンド計測システムの開発

  市原 美恵, 杉岡 裕子, 西田 究, 武尾 実, 浜野 洋三

  日本地球惑星科学連合2018年大会, May 2018, Japanese, 幕張メッセ, Domestic conference

  [Invited]

  Invited oral presentation


• Upper mantle structure beneath the Pacific Ocean revealed from seafloor and land broadband seismic observations

  Takehi Isse, Hajime Shiobara, Hitoshi Kawakatsu, Kazunori Yoshizawa, Hiroko Sugioka, Aki Ito, Daisuke Suetsugu

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• Toward complete tomography of the Earth’s interior with floating robotic acoustic sensors in the oceans: the EarthScope-Oceans

  Masayuki Obayashi, Hiroko Sugioka, Hajime Shiobara

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• The OJP array: Seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau

  Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Noriko Tada, Aki Ito, Takehi Isse, Kiyoshi Baba, Hiroshi Ichihara, Toyonobu Ota, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi, Hisashi Utada

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• sPL waves observed by the OJP array in the Ontong Java Plateau

  Minoru Kobayashi, Motoo Ukawa, Yoshio Fukao, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, TakashiTonegawa, Junko Yoshimitsu, Takumi Kobayashi

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• Shear wave splitting observed in the Ontong Java Plateau and adjacent regions

  Satoru Tanaka, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• Seismic attenuation in the mantle beneath the Ontong Java Plateau from multiple ScS waves

  Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Oral presentation


• Retrieval of converted phases from shallow structure of the Ontong Java Plateau

  Takashi Tonegawa, Daisuke Suetsugu, Seiichi Miura, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Junko Yoshimitsu, Takumi Kobayashi

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Oral presentation


• Noise removal from vertical component seismograms recorded by broadband ocean bottom seismometers

  Yuki Kawano, Takehi Isse, Hitoshi Kawakatsu, Hajime Shiobara, Hiroko Sugioka

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Oral presentation


• Multifrequency P-wave tomography of Ontong Java Plateau

  Masayuki Obayashi, Junko Yoshimitsu, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Takashi Tonegawa, Takumi Kobayashi

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Oral presentation


• Integrated marine investigations of Kikai Caldera, SW Japan

  Tetsuo Matsuno, Yoshiyuki Tatsumi, Nobukazu Seama, Keiko Suzuki-Kamata, Hiroshi Ichihara, Koji Kiyosugi, Reina Nakaoka, Satoshi Shimizu, Mamoru Sano, Hikaru Iwamaru, Haruhisa Morozumi, Hiroko Sugioka, Kazuo Nakahigashi, Yojiro Yamamoto, Kazuki Hayashi, Kimihiro Nishimura, Yuka Furukawa, Misaki Horiuchi, Daichi Nakata, Ryoto Nakamura, Hirose Toki, Yasutomo Seto, Atsuhiro Oshige, Hideaki Takizawa, Tatsuro Chiba, Shuichi Kodaira

  Japan Geoscience Union Meeting 2018, May 2018, Japanese, Makuhari Messe, Chiba, Domestic conference

  Oral presentation


• Geodesy and broadband seismology from a mobile ocean bottom observation

  Hajime Shiobara, Aki Ito, Hiroko Sugioka, Masanao Shinohara

  Japan Geoscience Union Meeting 2018, May 2018, Japanese, Makuhari Messe, Chiba, Domestic conference

  Poster presentation


• Generation and propagation of T-waves associated with underwater volcanic activities

  Hiroko Sugioka, Ronan Le Bras

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• Discordance between P- and S-wave tomography models using ISC

  Misaki Horiuchi, Hiroko Sugioka, Masayuki Obayashi

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• Development of Slow Earthquake Database

  Masayuki Kano, Naofumi Aso, Takanori Matsuzawa, Satoshi Ide, Satoshi Annoura, Ryuta Arai, Satoru Baba, Michael Bostock, Kevin Chao, Kosuke Heki, Satoshi Itaba, Yoshihiro Ito, Noriko Kamaya, Takuto Maeda, Julie Maury, Mamoru Nakamura, Takuya Nishimura, Koichiro Obana, Kazuaki Ohta, Natalia Poiata, Baptiste Rousset, Hiroko Sugioka, Ryota Takagi, Tsutomu Takahashi, Akiko Takeo, Yoko Tu, Naoki Uchida, Yusuke Yamashita, Kazushige Obara

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Poster presentation


• Determination of Intrinsic Attenuation in the OceanicLithosphere-Asthenosphere System

  Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada

  Japan Geoscience Union Meeting 2018, May 2018, English, Makuhari Messe, Chiba, International conference

  Oral presentation


• Tsunami Source Modeling of the 2015 Volcanic Tsunami Earthquake near Torishima, South of Japan

  Sandanbata, O, S. Watada, K. Satake, Y. Fukao, H. Sugioka, A. Ito, H. Shiobara

  2017 AGU Fall Meeting, Dec. 2017, English, International conference

  Poster presentation


• Toward standardization of slow earthquake catalog -Development of database website-

  Kano, M, N. Aso, S. Annoura, R. Arai, Y. Ito, N. Kamaya, J. Maury, M. Nakamura, T. Nishimura, K. Obana, H. Sugioka, R. Takagi, T. Takahashi, A. Takeo, Y. Yamashita, S. Ide, K. Obara

  2017 AGU Fall Meeting, Dec. 2017, English, International conference

  Poster presentation


• Autonomous BBOBS-NX (NX-2G) for New Era of Ocean Bottom Broadband Seismology

  Shiobara, H, A. Ito, H. Sugioka, M. Shinohara

  2017 AGU Fall Meeting, Dec. 2017, Japanese, International conference

  Poster presentation


• 実体波の走時差から推定したオントンジャワ海台下の上部マントル構造

  小林 拓史, 末次 大輔, 大林 政行, SUGIOKA HIROKO

  地震学会2017年度秋季大会, Oct. 2017, Japanese, かごしま県民交流センター, Domestic conference

  Poster presentation


• 広帯域海底地震計鉛直成分におけるノイズ除去の予備的解析

  川野 由貴, 一瀬 建日, 川勝 均, SUGIOKA HIROKO

  地震学会2017年度秋季大会, Oct. 2017, Japanese, かごしま県民交流センター, Domestic conference

  Poster presentation


• 海底面での機動的傾斜観測実現に向けたBBOBST-NXでの長期試験観測

  塩原 肇, 篠原 亜妃, 伊藤 亜妃, 日野 亮太, 佐藤 利典, SUGIOKA HIROKO

  地震学会2017年度秋季大会, Oct. 2017, Japanese, かごしま県民交流センター, Domestic conference

  Oral presentation


• スロー地震カタログの標準化に向けて-データベースの整備-

  加納 将行, 麻生 尚文, 案浦 理, 新井 隆太, 伊藤 喜宏, 鎌谷 紀子, Julie Maury, 中村 衛, 西村 卓也, 尾鼻 浩一郎, SUGIOKA HIROKO, 高木 涼太, 高橋 努, 竹尾 明子, 山下 裕亮, 松澤 孝紀, 井出 哲, 小原 一成

  地震学会2017年度秋季大会, Oct. 2017, Japanese, かごしま県民交流センター, Domestic conference

  Poster presentation


• Seasonality of fin whale “Balaenoptera Physalus” call interval obtained from ocean bottom seismic observation system in Northeast Japan

  Yoshida, R, H. Kato, M. Kyo, H. Sugioka

  OCEANS 2017, Oct. 2017, English, International conference

  Oral presentation


• 2015年鳥島近海における火山性地震の津波波源モデル

  三反畑 修, 綿田 辰吾, 佐竹 健治, 深尾 良夫, SUGIOKA HIROKO, 伊藤 亜妃, 塩原 肇

  地震学会2017年度秋季大会, Oct. 2017, Japanese, かごしま県民交流センター, Domestic conference

  Oral presentation


• 海底電位磁力計が捉えた西之島火山下のマグマ上昇を示唆する二つの独立シグナル

  馬場 聖至, 小山 崇夫, 武尾 実, 多田 訓子, 浜野 洋三, SUGIOKA HIROKO, ICHIHARA HIROSHI, 高木 朗充

  日本火山学会2017年秋季大会, Sep. 2017, Japanese, 熊本大学黒髪南キャンパス, Domestic conference

  Poster presentation


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic discontinuity, and water content

  MATSUNO TETSUO, SUETSUGU DAISUKE, BABA KIYOSHI, TADA NORIKO, SHIMIZU HISAYOSHI, SHIOBARA HAJIME, ISSE TAKEHI, SUGIOKA HIROKO, ITO AKI, OBAYASHI MASAYUKI, UTADA HISASHI

  IAG-IASPEI symposium 2017, Aug. 2017, English, International conference

  Oral presentation


• Upper mantle structure beneath the Pacific Ocean revealed by land and seafloor broadband

  Takehi Isse, Hajime Shiobara, Kazunori Yoshizawa, Hitoshi Kawakatsu, Hiroko Sugioka, Aki Ito, Daisuke Suetsugu, Hisashi Utada

  IAG-IASPEI 2017, Jul. 2017, English, Kobe International Conference Center, International conference

  Oral presentation


• Possibility of tilt observation at the seafloor by a mobile ocean bottom seismometer

  Hajime Shiobara, Aki Ito, Hiroko Sugioka, Yoshio Fukao, Masanao Shinohara

  IAG-IASPEI 2017, Jul. 2017, English, Kobe International Conference Center, International conference

  Poster presentation


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic thickness, and water content

  Tetsuo Matsuno, Daisuke Suetsugu, Kiyoshi Baba, Noriko Tada, Hisayoshi Shimizu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Masayuki Obayashi, Hisashi Utada

  IAG-IASPEI 2017, Jul. 2017, English, Kobe International Conference Center, International conference

  Oral presentation


• 分散性を考慮した津波波線追跡と初期海面変動の推定：2015年スミスカルデラ地震への適用

  三反畑 修, 綿田 辰吾, 佐竹 健治, 深尾 良夫, SUGIOKA HIROKO, 伊藤 亜妃, 塩原 肇

  JpGU-AGU Joint Meeting 2017, May 2017, Japanese, 幕張メッセ, International conference

  Oral presentation


• 波源近傍における最低次及び極高調モードの内部潮汐波検出：JCOPE-T 海洋循環モデルとの比較

  深尾 良夫, 美山 透, 東野 陽子, SUGIOKA HIROKO, 塩原 肇, 山下 幹也, Varlamov Sergey, 宮澤 泰正

  JpGU-AGU Joint Meeting 2017, May 2017, Japanese, 幕張メッセ, International conference

  Poster presentation


• 太平洋を横断する海洋外部重力波の発生場所とその季節変化

  利根川 貴志, 深尾 良夫, 塩原 肇, SUGIOKA HIROKO, 伊藤 亜妃, 山下 幹也

  JpGU-AGU Joint Meeting 2017, May 2017, Japanese, 幕張メッセ, International conference

  Oral presentation


• 西之島周辺における長期海底地震観測

  篠原 雅尚, 市原 美恵, 酒井 慎一, 山田 知朗, 武尾 実, SUGIOKA HIROKO, 長岡 優, 高木 朗充, 森下 泰成, 小野 智三, 西澤 あずさ

  JpGU-AGU Joint Meeting 2017, May 2017, Japanese, 幕張メッセ, International conference

  Oral presentation


• 西之島周辺での離島火山モニタリングシステムの初めての運用

  浜野 洋三, SUGIOKA HIROKO, 市原 美恵, 西田 究, 馬場 聖至, 多田 訓子

  JpGU-AGU Joint Meeting 2017, May 2017, Japanese, 幕張メッセ, International conference

  Oral presentation


• 自律動作の高性能広帯域海底地震計(NX-2G)の開発:動作試験報告

  塩原 肇, 伊藤 亜妃, SUGIOKA HIROKO, 篠原 雅尚

  JpGU-AGU Joint Meeting 2017, May 2017, Japanese, 幕張メッセ, International conference

  Oral presentation


• 火山島活動の周辺の海からの観測の重要性について

  浜野 洋三, SUGIOKA HIROKO, 市原 美恵

  JpGU-AGU Joint Meeting 2017, May 2017, Japanese, 幕張メッセ, International conference

  Oral presentation


• Upper mantle structure beneath the Pacific Ocean revealed by land and seafloor broadband observations

  一瀬 建日, 塩原 肇, 吉澤 和範, 川勝 均, SUGIOKA HIROKO, 伊藤 亜妃, 末次 大輔, 歌田 久司

  JpGU-AGU Joint Meeting 2017, May 2017, English, 幕張メッセ, International conference

  Oral presentation


• Upper mantle structure beneath the Ontong Java Plateau from measurements of body wave differential travel times

  小林 拓史, 末次 大輔, 大林 政行, SUGIOKA HIROKO

  JpGU-AGU Joint Meeting 2017, May 2017, English, 幕張メッセ, International conference

  Poster presentation


• Regional-scale variation of the lithosphere-asthenosphere system beneath the old Pacific ocean basin revealed by NOMan seafloor array observation

  竹尾 明子, 川勝 均, 一瀬 建日, 西田 究, 塩原 肇, SUGIOKA HIROKO, 伊藤 亜妃, 歌田 久司

  JpGU-AGU Joint Meeting 2017, May 2017, English, 幕張メッセ, International conference

  Oral presentation


• Brief overview of landing survey and seisimic observation at Nishinoshima

  武尾 実, 大湊 隆雄, 市原 美恵, 前野 深, 金子 隆之, 篠原 雅尚, 馬場 聖至, 西田 究, 安田 敦, 渡邊 篤志, SUGIOKA HIROKO, 浜野 洋三, 多田 訓子, 中野 俊, 吉本 充宏, 川上 和人, 千田 智基, 高木 朗充, 長岡 優

  JpGU-AGU Joint Meeting 2017, May 2017, English, 幕張メッセ, International conference

  Oral presentation


• Activities on our broadband ocean bottom seismic observation

  Hiroko Sugioka

  Collaboration Research in global ocean and subduction, Apr. 2017, English, Seoul National University, International conference

  Oral presentation


• Upper mantle structure beneath the Pacific Ocean revealed by seafloor seismic array observations

  一瀬 建日, 塩原 肇, 吉澤 和範, 杉岡 裕子, 伊藤 亜妃, 末次 大輔

  日本地震学会2016年度秋季大会, Oct. 2016, Japanese, Domestic conference

  Oral presentation


• 海底地震観測データから推定される房総沖フィリピン海プレート上面深度

  伊藤 亜妃, 杉岡 裕子, 尾鼻 浩一郎, 中野 優, 山本 揚二朗, 末次 大輔, 中東 和夫, 篠原 雅尚, 日野 亮太

  日本地震学会2016年度秋季大会, Oct. 2016, Japanese, Domestic conference

  Poster presentation


• 2015 年鳥島近海における火山性津波地震：分散性を考慮した波線追跡

  三反畑 修, 綿田 辰吾, 佐竹 健治, 深尾 良夫, 杉岡 裕子, 伊藤 亜妃, 塩原 肇

  日本地震学会2016年度秋季大会, Oct. 2016, Japanese, Domestic conference

  Oral presentation


• 2015 年鳥島近海における火山性津波地震：近地海底水圧計アレーによる波源解析

  深尾 良夫, SUGIOKA HIROKO, 伊藤 亜妃, 塩原 肇, 三反畑 修, 綿田 辰吾, 佐竹 健治

  日本地震学会2016年度秋季大会, Oct. 2016, Japanese, Domestic conference

  Oral presentation


• ２０１５年鳥島津波地震：分散性を考慮した津波波線追跡

  三反畑 修, 綿田 辰吾, 佐竹 健治, 深尾 良夫, SUGIOKA HIROKO, 伊藤 亜妃, 塩原 肇

  日本地球惑星科学連合2016年大会, May 2016, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• 離島火山活動モニタリングシステムの開発

  SUGIOKA HIROKO, 浜野 洋三, 市原 美恵, 西田 究, 武尾 実

  日本地球惑星科学連合2016年大会, May 2016, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• 西之島火山周辺海域でのハイドロフォン観測

  浜野 洋三, SUGIOKA HIROKO, 伊藤 亜妃, 市原 美恵, 篠原 雅尚, 西田 究, 武尾 実

  日本地球惑星科学連合2016年大会, May 2016, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• 西之島火山の活動把握を目指した多項目観測

  市原 美恵, 篠原 雅尚, 西田 究, 酒井 慎一, 山田 知朗, 武尾 実, SUGIOKA HIROKO, 浜野 洋三, 長岡 優, 高木 朗充, 森下 泰成, 西澤 あずさ

  日本地球惑星科学連合2016年大会, May 2016, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic discontinuity, and water content

  MATSUNO TETSUO, SUETSUGU DAISUKE, BABA KIYOSHI, TADA NORIKO, SHIMIZU HISAYOSHI, SHIOBARA HAJIME, ISSE TAKEHI, SUGIOKA HIROKO, ITO AKI, OBAYASHI MASAYUKI, UTADA HISASHI

  Japan Geoscience Union Meeting 2016, May 2016, English, International conference

  Oral presentation


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic discontinuity, and water content

  松野 哲男, 末次 大輔, 歌田 久司, 馬場 聖至, 多田 訓子, 清水 久芳, 塩原 肇, 一瀬 建日, SUGIOKA HIROKO, 伊藤 亜妃

  日本地球惑星科学連合2016年大会, May 2016, English, 幕張メッセ, Domestic conference

  Oral presentation


• Anisotropy in the Northwest Pacific oceanic lithosphere inferred from Po/So waves

  志藤 あずさ, 末次 大輔, 古村 孝志, 塩原 肇, 一瀬 建日, SUGIOKA HIROKO, 伊藤 亜妃, 竹尾 明子, 歌田 久司

  日本地球惑星科学連合2016年大会, May 2016, English, 幕張メッセ, Domestic conference

  Poster presentation


• 2015年鳥島津波地震：海底水圧計アレーによる近距離での津波観測

  深尾 良夫, SUGIOKA HIROKO, 伊藤 亜妃, 塩原 肇, 三反畑 修, 綿田 辰吾, 佐竹 健治

  日本地球惑星科学連合2016年大会, May 2016, Japanese, 幕張メッセ, Domestic conference

  Oral presentation


• Upper mantle structure of the Pacific and Philippine Sea plates revealed by seafloor seismic array observations

  Isse, T, Shiobara, H, Suetsugu, D, Sugioka, H, Ito, A

  European Geosciences Union General Assembly 2016, Apr. 2016, English, Vienna, Austria, International conference

  Oral presentation


• The thickness of the mantle transition zone beneath the Society hotpots using data from the TIARES network

  Suetsugu, D, H. Sugioka, T. Isse, A. Ito, H. Shiobara, T. Kasaya

  European Geosciences Union General Assembly 2016, Apr. 2016, English, Vienna, Austria, International conference

  Oral presentation


• Practical performance evaluation of the Wave Glider in geophysical observations

  Sugioka, H, Y. Hamano

  European Geosciences Union General Assembly 2016, Apr. 2016, English, Vienna, Austria, International conference

  [Invited]

  Invited oral presentation


• NX-2G : autonomous BBOBS-NX for a highly mobile broadband seismic observation at the seafloor

  Shiobara, H, H. Sugioka, A. Ito, M. Shinohara

  European Geosciences Union General Assembly 2016, Apr. 2016, English, International conference

  Poster presentation


• Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic discontinuity, and water content

  Matsuno, T, D. Suetsugu, H. Utada, K. Baba, N. Tada, H. Shimizu, H. Shiobara, T. Isse, H. Sugioka, A. Ito

  European Geosciences Union General Assembly 2016, Apr. 2016, English, Vienna, Austria, International conference

  Oral presentation


• Infrasonic monitoring of the eruption at a remote island volcano, Nishino-shima

  Ichihara, M, J. Kikuchi, K. Nishida, H. Sugioka, Y. Hamano

  European Geosciences Union General Assembly 2016, Apr. 2016, English, Vienna, Austria, International conference

  Poster presentation


• 日本海溝上縁部を遡上する暴漲湍の検出

  深尾 良夫, 杉岡 裕子, 伊藤 亜妃, J. M. Paros, 古惠 亮

  日本海洋学会2016年秋季大会, 2016, Japanese, Domestic conference

  Oral presentation


• 房総沖海底地震観測による地震活動

  伊藤 亜妃, SUGIOKA HIROKO, 尾鼻 浩一郎, 中野 優, 山本 揚二朗, 末次 大輔, NAKAHIGASHI KAZUO, 篠原 雅尚, 日野 亮太

  地震学会秋季大会, Oct. 2015, Japanese, Domestic conference

  Poster presentation


• 自律動作の高性能広帯域海底地震計開発計画：NX2G

  塩原 肇, 篠原 雅尚, SUGIOKA HIROKO, 伊藤 亜妃

  地震学会秋季大会, Oct. 2015, Japanese, Domestic conference

  Oral presentation


• 海底電磁気・地震同時観測データから推定する北西太平洋「ふつう」の海洋マントル遷移層の含水量

  松野 哲男, 末次 大輔, 歌田 久司, 馬場 聖至, 多田 訓子, 清水 久芳, 塩原 肇, 一瀬 建日, SUGIOKA HIROKO, 伊藤 亜妃

  地震学会秋季大会, Oct. 2015, Japanese, Domestic conference

  Poster presentation


• Infragravity waves, Tsunami, and Ocean tides observed by a deep sea differential pressure gauge (DPG) – Development, calibrations and performance

  SUGIOKA HIROKO

  2015 OBS Symposium, IRIS Ocean Bottom Seismograph Instrument Pool (IRIS OBS-IP), Oct. 2015, English, International conference

  [Invited]

  Invited oral presentation


• 北西太平洋における広帯域海底地震観測データを用いたリソスフェアーアセノスフェア境界の検出

  安部 祐希, 川勝 均, 塩原 肇, 一瀬 建日, SUGIOKA HIROKO, 伊藤 亜妃, 歌田 久司

  日本地球惑星科学連合大会, May 2015, Japanese, Domestic conference

  Poster presentation


• 太平洋アレイ

  川勝 均, 竹尾 明子, 一瀬 建日, 西田 究, 塩原 肇, 末次 大輔, SUGIOKA HIROKO

  日本地球惑星科学連合大会, May 2015, Japanese, Domestic conference

  Oral presentation


• 海底地震計記録を用いたPo-to-s変換波の抽出

  利根川 貴志, 塩原 肇, 一瀬 建日, SUGIOKA HIROKO, 伊藤 亜妃, 竹尾 明子, 川勝 均, 歌田 久司

  日本地球惑星科学連合大会, May 2015, Japanese, Domestic conference

  Poster presentation


• 「ふつうの海洋マントル」プロジェクトで実施された爆破実験による北西太平洋の最上部マントル構造

  一瀬 建日, 塩原 肇, 山田 知朗, 八木 健夫, 篠原 雅尚, SUGIOKA HIROKO, 歌田 久司

  日本地球惑星科学連合2015年大会, May 2015, Japanese, Domestic conference

  Oral presentation


• 2011年東北沖地震後に発生した熊野灘沖の浅部低周波地震

  藤 亜希子, 尾鼻 浩一郎, SUGIOKA HIROKO, 荒木 英一郎, 高橋 成実, 深尾 良夫

  日本地球惑星科学連合大会, May 2015, Japanese, Domestic conference

  Poster presentation


• 広帯域海底地震観測によるソサエティ・ホットスポット下のマントル遷移構造の推定

  末次 大輔, SUGIOKA HIROKO, 一瀬 建日, 伊藤 亜妃, 塩原 肇

  日本地球惑星科学連合大会, 2015, Japanese, Domestic conference

  Oral presentation


• フレンチポリネシア下のP波速度異常

  大林 政行, 吉光 淳子, SUGIOKA HIROKO, 伊藤 亜妃, 一瀬 建日, 塩原 肇, 末次 大輔

  日本地球惑星科学連合大会, 2015, Japanese, Domestic conference

  Poster presentation

• アメリカ地球物理学会


• 日本地震学会

• 海底光ファイバ通信網を利活用した地震・火山・津波の観測基盤の構築

  杉岡 裕子

  日本学術振興会, 科学研究費助成事業, 基盤研究(A), 神戸大学, 01 Apr. 2025 - 31 Mar. 2029


• Cutting-edge earthquake research by long-term broadband seafloor seismic observation technology at the ultra-deep sea area, a region of observational blank

  塩原 肇, 杉岡 裕子, 篠原 雅尚, 伊藤 亜妃

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Challenging Research (Pioneering), The University of Tokyo, 30 Jun. 2023 - 31 Mar. 2027

  「超深海」（本課題では水深6000ｍ以上と定義）の地域は、日本周辺では海溝沿いに広く存在し、海底地震観測の空白域となっている。より浅い海域では実現している1年以上の長期海底地震観測が、その水深ゆえの高水圧によって、国際的にも未だ成し得られていない。本研究課題はこの未踏の領域で、既に多くの研究成果を挙げてきている広帯域海底地震計の開発研究と「超深海」用海底地震計開発でのこれまでの取り組みを元に、「超深海」域での長期・広帯域地震観測を可能とする新しい海底地震計の実用化を行う。 2023年度は、2012年に開発した大掛かりな試験機を、信頼性の高いコンパクトな構造へ修正した実用機の機構設計と製作を行う計画であった。この超深海用広帯域海底地震計では、設置・観測・回収の各段階を制御する機構を、水中ケーブルを使用しない完全な機械式で実現しており、将来的発展性を念頭にした設計を製造業者と議論の上で行い完成させた。地震観測そのものに必要な機能を収納する耐圧容器とその内装についても、別業者と並行して設計・開発を進めた。アンカー部の設計も同時に進めており、回収用の浮力体などを含めた全体構造も定まった。 使用する高精度加速度センサーに関しては、開発業者での改修作業が停滞したままであるが、全体構造としてはその改修部分が無くても観測機能が成立するものとしている。小型化した専用の海底地震計用データレコーダーも準備完了した。 超深海用広帯域海底地震計の実地での動作機能確認の試験観測を実施するための研究航海の確保は、海洋研究開発機構の内部航海枠での共同研究として進め、2024年9月に実施の予定である。


• International collaborative research on the viscosity of the oceanic asthenosphere through marine geophysical observations and geodynamic modeling

  馬場 聖至, 一瀬 建日, 竹内 希, 竹尾 明子, 森重 学, 杉岡 裕子, 松野 哲男, 多田 訓子, 市原 寛

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), The University of Tokyo, 01 Apr. 2023 - 31 Mar. 2027


• 「速いスロー地震」から探る、カスカディア巨大地震震源域におけるプレート固着の実態

  尾鼻 浩一郎, 杉岡 裕子, 塩原 肇

  日本学術振興会, 科学研究費助成事業, 基盤研究(B), 国立研究開発法人海洋研究開発機構, 01 Apr. 2022 - 31 Mar. 2027

  カナダ・カスカディア沈み込み帯北部で、プレート境界浅部における固着状況を検証するとともに、歪み蓄積と解放の実態を明らかにすることを目的に、「速いスロー地震」に着目した海底圧力計（OBP）によるアレイ観測を開始した。 観測に向けては、OBP6台を国内で準備したのちに、出港地であるカナダに輸送した。カナダでは、Geological Survey of Canada (GSC)の協力のもと、最終的な調整を行い、ドイツの調査船R/V Sonneに搭載した。OBP6台は、ドイツGEOMARの研究者が首席研究者を務めた調査航海“CLOCKS”(航海番号SO294) (2022年9月13日から10月27日)で、カナダ・バンクーバー島沖に設置した。OBP6台は、全体として一辺20kmの正三角形のアレイとなるように、10km間隔で設置した。また、GEOMARの広帯域海底地震計(BBOBS) 6台とJAMSTECの短周期海底地震計(OBS)9台もOBPアレイと同じ海域に設置し、観測を開始した。なお、設置された装置の海底での着底位置は、設置後に船上からの音響測距により確認している。航海中には、海底地形調査に加え、エアガンを用いた構造探査、海底電位差磁力計(OBEM)を用いた電磁気探査なども行われた。航海終了後、観測に使用した機材は、入港地のアメリカから、日本に向けて返送した。 今回設置したOBS、BBOBSの回収を2023年に、またOBPについては2024年の回収を予定している。回収作業はカナダの調査船を用いて行う計画であり、航海実施に向けた調整をカナダ側関係者と進めた。


• 「速いスロー地震」から探る、カスカディア巨大地震震源域におけるプレート固着の実態

  尾鼻 浩一郎, 杉岡 裕子, 塩原 肇

  日本学術振興会, 科学研究費助成事業 基盤研究(B), 基盤研究(B), 国立研究開発法人海洋研究開発機構, 01 Apr. 2022 - 31 Mar. 2027


• In situ measurement of tsunami generation by volcanic activities

  杉岡 裕子, 浜野 洋三

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2020 - 31 Mar. 2024

  本研究は、先行科研費研究課題で構築した離島火山観測システムを基盤とした技術開発研究とリアルタイム監視手法の確立を目指したものであったが、2020ー2021年度に東京都の離島火山の西之島新島近海で実施した完全自立航走観測中において、本システムの推進機構上における潜在的な問題が明らかとなった。これは、2020年12月末から2021年1月初旬にかけて画像解析で認められた火山噴火に対応し、ハイドロフォンならびにマイクロフォンにおいても記録された特徴的な孤立波において、実はこの波形には推進機構であるグライダーの機械的振動によるマイクロフォンセンサーの非線形応答成分が乗じていたことが判明したというものである。特に、火山噴火活動で励起した音波の卓越周期が1秒程度の場合、水中グライダーのフリップ振動周波数が同調するためこの非線形現象が顕著となる問題点については昨年度研究実績概要欄においても報告済みである。 一方、2022年1月15日に発生したフンガ・トンガ＝フンガ・ハアパイ火山の大規模噴火に伴う水中音波を、近傍で観測中のフロート式ハイドロフォンアレイ（MERMAID）で検出することに成功した。更に、マリアナ近海および鬼界カルデラ火山近海の海底から回収された海底電位差磁力計ならびに海底微差圧計・広帯域地震計アレイ観測記録上においても火山噴火に伴う地震、水中音波および気象津波が検出された。気象津波は、大気・海洋結合系の波動現象として説明されるもので、1883年クラカタウ火山噴火時観測以来の非常に希少な現象である（Harkrider and Press, 1967）。一方、今回観測された爆発的噴火に伴う気象津波は全世界中を伝播し、各地の沿岸における津波到来時刻が示したように、通常の地震性津波よりも理論的有意に早く到着するため、防災科学的側面からも本現象を深く理解することは非常に重要である。


• SPPIM: South Pacific Plume Imaging with floating robots

  Obayashi Masayuki

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Japan Agency for Marine-Earth Science and Technology, 01 Apr. 2019 - 31 Mar. 2024

  In order to obtain detailed seismic wave velocity structure of the mantle plume from the core-mantle boundary in the South Pacific, Japan, France, the United States, and China have started seismic observations in the South Pacific using 50 floats equipped with hydrophones. This makes it possible to obtain seismic P-wave waveform data from ocean observation points in quasi-real time via satellite communication. Preliminary tomography has revealed the plume structure beneath the Caroline Seamount chain. In addition, T-waves associated with the submarine volcanic eruption of Tonga that occurred on January 15, 2022 were observed with floats drifting in a deep sound channel at a depth of 1,500 m, and the T-wave propagation time difference between floats was measured to identify the source of the T-waves. Similarly, T-wave analysis of the Torishima-oki earthquake on October 9, 2023 suggested that it may have been an eruption of the Sofu Seamount.


• Real-time monitoring of marine volcanic activities using remote seafloor observatories

  松本 浩幸, 杉岡 裕子, 中村 武史

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory), Grant-in-Aid for Challenging Research (Exploratory), Japan Agency for Marine-Earth Science and Technology, 30 Jul. 2020 - 31 Mar. 2023

  海域火山（火山島および海底火山）は活動のグランド・トゥルースが取得しにくく、噴火の予測や早期検知が格段に困難なことが課題となっている。本研究は、既存の海底観測ネットワーク（DONETやS-net）を利用して海域火山の活動を常時監視する手法を提案する。海域火山活動に関連する水中音波シグナルが遠方まで伝播する特性に着目して、既存の地震と津波に関する海底観測ネットワークを利用することにより、海域火山活動を常時リモート監視する体制の実現を目指している。 本研究では包括的核実験禁止条約機関（CTBTO）の国際監視制度（IMS）のハイドロフォンアレイの観測データをグランド・トゥルースとしてデータ解析を進めることにしている。予備的な検討として、2022年1月のフンガトンガ・フンガハアパイカルデラ（フンガトンガ火山）の海底噴火にともなう水中音波のデータ解析をCTBTOのIMS局の水中音波ユニットの研究者と連携して行った。その結果、米国領Wake島のハイドロフォンアレイで、火山活動にともなう水中音波ならびに津波が観測されていることを確認した。 また、前年度からの継続的な取り組みとして、光ファイバセンシング技術の一つである分散型音響センシング（DAS）による水中音波の検知性能を考察した。従来は光源から光ファイバ長50 kmまでの計測が可能であったが、より長距離計測が可能なDASを海底ケーブルに適用した。光ファイバ長100 kmまでの観測とノイズレベルの評価を行い、DASによるシグナルの検知性能について検証した。これらの検討結果は国内外の学会で発表して、地球物理を専門とする科学者と本研究の着眼点と有効性について議論した。


• Development research of the high performance ocean bottom seismometer for breakthrough in scientific studies at the seafloor

  Shiobara Hajime

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), The University of Tokyo, 01 Apr. 2015 - 31 Mar. 2020

  For breakthrough of the broadband ocean bottom seismology, which has been established in these 20 years by us, we have performed to develop an autonomous type self-burial sensor ocean bottom broadband seismometer (BBOBS) named "NX-2G". It is a mixture of the self-popup type BBOBS and the self-burial sensor type, "BBOBS-NX", operated with a submersible. The BBOBS has been used in several observations with many kinds of vessels. But the data quality is better with the BBOBS-NX, which limits chance of observation due to use of a submersible. The NX-2G has been almost realized during test observations in its autonomous functions planed. But the noise reduction was not as expected in results by BBOBS-NXs. We have modified the NX-2G for the next test, but the cruise in 2019 was canceled due to typhoons. The next chance will be in 2021. Results of this research have been presented in several meetings (IUGG, AGU, JpGU, and SSJ), and a review paper including this research has been accepted.


• Study of island-forming eruption at Nishinoshima based on remote multi-fields observation

  TAKEO Minoru

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), The University of Tokyo, 01 Apr. 2016 - 31 Mar. 2019

  The island-forming eruption at Nishinoshima volcano, Ogasawara Islands, Japan, started in November, 2013, lasting until July, 2018. The total volume of erupted lava exceeded one hundred million cubic meter, which is a recent biggest eruption in Japan. We conducted several remote sensing observations, a landing survey in October 2016, various types of geophysical observations, such as ocean bottom seismic and geomagnetic observations, seismic-acoustic observation in Nishinoshima, and operated a remote-island volcano monitoring system. This survey reveals the long-term eruption activity and the magma ascending process just before the eruption. The magma temperature was relatively higher than that of an ordinary island arc magma and the composition was a crystal-poor. The variation of magma composition suggests that andesite magma derived from a crystal-rich shallow reservoir and a crystal-poor deeper reservoir.


• Towards remote monitoring of submarine volcanic activities(Fostering Joint International Research)

  Sugioka Hiroko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research), Fund for the Promotion of Joint International Research (Fostering Joint International Research), 2016 - 2019, Principal investigator

  Towards remote monitoring of submarine volcanic activities, we have been successful in two following approaches; (1) Establishment of a platform for access to the CTBTO global network data: a virtual data center (vDEC) openly provides us with access to the CTBTO/IMS data, which can also act as a platform for the data processing useful to detect unknown hydroacoustic events; (2) Installation of an autonomous mid-column oceanic float hydrophones: MERMAID is a revolutionary submarine "drone" with hydrophone originally conceived by SImons and Nolet at Princeton University in 2002, which can detect the seismic data to transfer in real time via Iridium satellite. The 50 MERMAIDs were deployed to form a wide array in the South Pacific in 2018-2019 under an international collaboration project between French, U.S., China, and Japan to image, in detail, the massive mantle plume in the lower mantle regarding to the South Pacific Super Plume. They can observe with autonomous drifting for 6 years.

  Competitive research funding


• Exploring Large Igneous Provinces: Determination of crust and mantle structure beneath the Ontong Java Plateau by marine geophysical observation

  SUETSUGU Daisuke, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, BABA Kiyoshi, ICHIHARA Hiroshi, TADA Noriko, TANAKA Satoru, ISHIHARA Yasushi, OBAYASHI Masayuki, TONEGAWA Takashi, NAKANISHI Masao, MIURA Seiichi, UTADA Hisashi, SANO Takashi, Shen Yang, Harmon Nick

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Agency for Marine-Earth Science and Technology, 01 Apr. 2015 - 31 Mar. 2018

  We performed seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau (OJP) region from 2014 to 2017. Preliminary results of data analyses indicate that the cold Pacific slab is stagnant at depths around 600 km beneath the OJP. Low-velocity anomalies surround the OJP at depths shallower than 400 km. It may suggest that a mantle upwelling from the bottom of the mantle transition zone or the core-mantle boundary ascends, makes its way around the stagnant Pacific slab, and reaches to the Earth’s surface around the OJP. Seismic attenuation indicates stronger attenuation in the mantle beneath regions surrounding the OJP than that beneath the OJP, supporting the hypothesis described above. In addition, we confirm that a thick Moho discontinuity (~40 km) and mid-crust discontinuity beneath the OJP.


• Pacific Array

  Kawakatsu Hitoshi, SHIOBARA Hajime, ISSE Takehi, NISHIDA Kiwamu, UTADA Hisashi, SUETSUGU Daisuke, SUGIOKA Hiroko, YOSHIZAWA Kazunori

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, The University of Tokyo, 01 Apr. 2015 - 31 Mar. 2018

  We have proposed a next generation large-scale array experiment in the ocean called Pacific Array. Recent advances in ocean bottom broadband seismometry, together with advances in the seismic analysis methodology, have enabled us to resolve the regional 1-D structure of the entire lithosphere/asthenosphere system, including seismic anisotropy, with deployments of ~15 broadband ocean bottom seismometers. Having ~15 BBOBSs as an array unit for a ~1-year deployment, and repeating such deployments in a leap-frog way or concurrently (an array of arrays) for a decade or so would enable us to cover a large portion of the Pacific basin. With this JSPS support, we took a leadership to organize international collaborations; as a result, three array deployments are funded so far in various countries (US, Japan, and Korea).


• Remote monitoring of island volcanic activities using an autonomous vehicle

  Sugioka Hiroko, NISHIDA Kiwamu, TAKEO Minoru, URABE Taku, MAENO Fukashi, IINO Masahiro, ONISHI Nobuhito, KUSUMOTO Yoshimu

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Kobe University, 01 Apr. 2015 - 31 Mar. 2018, Principal investigator

  We have developed a monitoring system of remote island volcanic activities using an unmanned surface vehicle of the Wave Glider, which is designed to propel using only wave. In the system, it performs a multi-parametric observatory platform on which we mounted two microphones, hydrophone, wave-gauges, and four cameras. The data except for images can be sent to the land server via the Thuraya satellite. We had an observation of the Nishinoshima using the monitoring system in Dec., 2017. The system was launched near the Bonin island 130 km from the Nishinoshima on the 1st and reached there on the 4th. After five rounds traveling, it left on the 8th. The data were successfully obtained in real-time. On the 4th at the vicinity, steam emission from the volcano were surely recognized on images. The higher coherent waves between two microphones were observed in this active period. The system has been almost accomplished to promote a forward-looking observation of island volcanic activities.

  Competitive research funding


• Ocean bottom pressure gauge array for studying phenomena involving the ocean and solid Earth as a system

  FUKAO Yoshio, NISHIDA Kiwamu, ITO Aki, YAMASHITA Mikiya, TONEGAWA Takashi, SHIOBARA Hajime, HIBIYA Toshiyuki

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Japan Agency for Marine-Earth Science and Technology, 01 Apr. 2013 - 31 Mar. 2017

  We constructed 10 sets of ocean bottom pressure gauges using quartz crystal resonator sensors which measure the ocean bottom pressure with a nano-resolution at a water depth of 7000m.We deployed these pressure gauges as an array at the ocean bottom east off Aogashima for 1 year period from May 2014, and then far east off Torishima for the next 1 year from May 2015. We also deployed the ocean bottom 3-component accelerometer off Miyagi, northern Honshu for 10 months from May 2013. This accelerometer was newly developped using a quartz resonator technique. We analyzed the retrieved data to detect hitheto unreported phenomena such as "Oceanic bores upsloping the Japan Trench slope", "Tsunamis generated by a volcanic tsunami earthquake", "Ocean internal tidal waves orinating from the eastern slope of the East Aogashima knoll" and "A group of ultra-low-frequency thrust earthquakes occurring along the northern Bonin trench".


• Exploration of the shallow electrical conductivity structure below seafloor by using the ocean dynamo effect

  HAMANO Yozo, SUGIOKA Hiroko, TADA Noriko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, Japan Agency for Marine-Earth Science and Technology, 01 Apr. 2013 - 31 Mar. 2016

  Based on the theoretical formulation of the ocean dynamo effect, in which ocean currents in the earth’s magnetic field generate the variations of electric and magnetic fields due to the motional induction, we developed a new method for probing the electrical conductivity structure under the seafloor from the seafloor observations of the variations of the electromagnetic filed and pressure change due to ocean currents. Applying the method to the observed data sets, we demonstrated the possibility of estimating the conductivity structure below seafloor by using the signals generated by tsunamis and estimated the application limit of the present method.


• 海底電磁場観測による津波防災の基礎研究

  杉岡 裕子

  独立行政法人日本学術振興会, 二国間交流事業（オープンパートナーシップ共同研究）, 2016, Principal investigator

  Competitive research funding


• Research on the process of generation and propagation of tsunamis based on the newly developed ocean bottom apparatus

  HAMANO Yozo, SUGIOKA Hiroko, TOH Hiroaki

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Agency for Marine-Earth Science and Technology, 01 Apr. 2012 - 31 Mar. 2015

  Towards the mitigation of tsunami disaster, we developed a new type of ocean bottom tsunami meter called Vector TsunaMeter (VTM), which consists of the Ocean Bottom Electro-Magnetometer (OBEM) and the Deep-sea Differential Pressure Gauge(DPG), and can estimate the tsunami propagation vector as well as the tsunami height based on the ocean dynamo effect. By using the VTM, we build a real-time tsunami monitoring system, in which data collected by the VTM is transmitted acoustically to the Wave Glider (WG), an autonomous ocean-going platform, on the ocean surface, and then transferred to the shore over satellite. We deployed the system off the pacific coast of the Tohoku area, and successfully detected the tsunami signal generated by the 2014 Chile earthquake.


• Rupture Process of The 2011 Tohoku-Oki Earthquake: Analysis by using Green's Tensor Waveforms

  OKAMOTO Taro, TAKENAKA Hiroshi, SUGIOKA Hiroko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Tokyo Institute of Technology, 01 Apr. 2012 - 31 Mar. 2015

  We analyzed "seismic" rupture process of the March 11, 2011 Tohoku-Oki earthquake (GCMT Mw9.1) by using a non-linear multi-time-window waveform inversion analysis. We used Green's tensor waveforms computed for laterally heterogeneous structure models: full 3D model was used for strong-motion Green's tensor waveforms, and 2.5D structure models were used for teleseismic P-wave Green's functions. The inferred slip distribution was characterized by large slips near the hypocenter with maximum slip of about 37 m. The near-trench slips were inferred to be relatively small. An isolated slip region was also identified at deep beneath the coast of Fukushima prefecture. On the other hand, large amount of "artificial" slips were inferred close to the trench when we apply 1D Green's functions that did not incorporate the effect of realistic lateral heterogeneity. Our result suggests the trench-ward large deformation that caused large tsunamis did not radiated strong seismic waves.


• Measurement of seafloor deformation associated with very-low-frequency earthquakes by differential pressure gauge

  SUGIOKA Hiroko, ARAKI Eiichiro, OKAMOTO Taro, ISHIHARA Yasushi, ITO Aki

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Japan Agency for Marine-Earth Science and Technology, 28 Apr. 2011 - 31 Mar. 2015

  Since a celebrated discovery of submarine very-low-frequency earthquakes by Wadati in 1928, we have, for the first time, detected their near-field displacements by broadband ocean-bottom seismometers on the seafloor of the Nankai Trough accretionary prism (Sugioka et al., 2012). Based on the observation of vertical deformation, we developed new tool to measure the seafloor displacement by a differential pressure gauge (Araki and Sugioka, 2009). The system would be very advanced tool for observations on sea bottom where the interaction between the oceans and solid Earth can be caused.


• New phase of Ocean Hemisphere Project : Imaging the normal oceanic mantle by advanced ocean bottom observations

  UTADA Hisashi, KAWAKATSU Hitoshi, SHIOBARA Hajime, BABA Kiyoshi, ISSE Takehi, SUETSUGU Daisuke, HONDA Satoru, SHINOHARA Masanao, TAKEI Yasuko, UYESHIMA Makoto, SHIMIZU Hisayoshi, HIRAGA Takehiko, TAKEUCHI Nozomu, NISHIDA Kiwamu, MIBE Kenji, TANAKA Satoru, OBAYASHI Masayuki, SUGIOKA Hiroko, TADA Noriko, ITO Aki, TONEGAWA Takashi, SHITO Azusa, OKI Satoko, TAKEO Akiko, MORISHIGE Manabu

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Specially Promoted Research, Grant-in-Aid for Specially Promoted Research, The University of Tokyo, 21 Apr. 2010 - 31 Mar. 2015

  In this project, we conducted a long-term geophysical observation in the northwest Pacific basin, by installing an array of seafloor instruments to record seismic waves or electromagnetic field variations at deep ocean bottom. These instruments were all developed by the present research group and show highest performance in the world. The long-term observation revealed detailed structures of seismic velocity and electrical conductivity below the study area, which are essential for understanding the mantle dynamics including movements of oceanic plates. In particular, it has first revealed the presence of laterally heterogeneous structure that is hardly explained by conventional plate evolution model assuming a simple cooling of the oceanic lithosphere while moving from the mid-oceanic ridge to the subduction zone.


• 津波予報の信頼性向上を目指した新しい海底津波観測システムの開発

  杉岡裕子, 浜野洋三

  公益財団法人三菱財団, 自然科学研究助成, Sep. 2012 - Sep. 2013, Principal investigator


• Separate extraction of ocean infragravity waves and seismic waves by multi-scale very-broadband observation of water pressure

  FUKAO Yoshio, SUGIOKA Hiroko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, Japan Agency for Marine-Earth Science and Technology, 2011 - 2012

  We developed an ocean bottom high-resolution water pressure measuring system using a newly released water-pressure sensor counting quartz-oscillation frequency. We installed this observation system on the seafloor off Miyagi prefecture and recovered it after three months. We confirmed that seismic event with magnitudes less than 3 can be detected with high S/N ratios on the 20Hz-sampling records. We also confirmed that by adjusting the sampling rate, the system can record ground noise whose rms amplitude is three orders of magnitude lower than the tremor amplitude in seismically quiet days.


• An empirical study on complex predicate processing: Collaboration of theoretical linguistics and the brain science of language

  ITO Takane, HAGIWARA Hiroko, SUGIOKA Yoko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), The University of Tokyo, 2008 - 2012

  We conducted Event Related Potential (ERP) measurement experiments with the aim at revealing the mental and neurological mechanisms employed in the word-level language processing. More specifically, we examined the processing of the so-called sase-causative, a type of complex predicates which exhibit bi-clausal properties, and of verb conjugation patterns, and obtained results suggesting that two different mechanisms of rule-based computation and associative memory are at work in the word-level processing.


• Multidisciplinary research on petit-spot volcanism. petrology and at sea field survey : implications for the understanding of the development of the oceanic plate

  ABE Natsue, BABA Kiyoshi, ARAI Shoji, FUJIWARA Toshiya, SUGIOKA Hiroko, SUZUKI Katsuhiko, YAMANO Makoto, HIRANO Naoto, NAKANISHI Masao, MICHIBAYASHI Katsuyoshi, ISHIKAWA Masahiro, MACHIDA Shiki, SHITO Azusa, ITO Aki, SENDA Ryoko, MIZUKAMI Tomoyuki, SHIMIZU Kenji, MORISHITA Tomoaki

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Agency for Marine-Earth Science and Technology, 2008 - 2011

  Petit-spot is a crap of young(<10 Ma) small volcanoes recently discovered in the NW Pacific Plate with Early Cretaceous age(～ 130), which is plain quiet area and was regarded as tectonically non-active. This project has been taken multidisciplinary survey and study on petitspot and aim to understand the oceanic plate and lithosphere/asthenosphere boundary. The result of this research provides important data to the study on the arc activities because the target area of this research is in the subducting oceanic plate beneath NE Japan arc.


• Imaging of the Polynesian mantle plumes from seismic and geomagnetic observation on seafloor in French Polynesia

  SUETSUGU Daisuke, SHIOBARA Hajime, SUGIOKA Hiroko, ISSE Takehi, KASAYA Takafumi, TADA Noriko, ITO Aki, BABA Kiyoshi, TANAKA Satoru, FUKAO Yoshio, DOMINIQUE Reymond, CLAUDIA Adam

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Japan Agency for Marine-Earth Science and Technology, 2007 - 2010

  We deployed broadband seismographs, ocean bottom electro-magnetometers, and differential pressure gauges on the Polynesian seafloor from Feb. 2009 to Dec. 2010. The aim of the observation is to understand origins of hotspot volcanism of the Society Islands. The observation was completed with success. A preliminary data analysis shows a presence of slow seismic-wave velocities beneath the hotspot, which suggests a hot mantle plume as the origin of the volcanism of the Society hotspots.


• Detection of tidal dissipation energy by seismic-acoustic observation

  SUGIOKA Hiroko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Agency for Marine-Earth Science and Technology, 2007 - 2009

  本研究は、深海底における海洋潮汐エネルギー散逸過程に関わる現象を海底地震観測で検出し、そのメカニズムを解明することを目的とした。代表者は深海底における広帯域地震観測から得られたデータ解析により、長周期海洋重力波が海洋潮汐と共鳴するという新規の事実を見出し、海洋潮汐エネルギー散逸過程として長周期海洋重力波との共鳴励起という全く新しいメカニズムを提案した。一方でこれを検証する理論を構築し観測を説明した。以上の結果をNature communications誌に投稿した。


• Imaging the stagnant slab by broadband ocean bottom seismic observation

  KANAZAWA Toshihiko, KAWAKATSU Hitoshi, SHIOBARA Hajime, SHINOHARA Masanao, MOCHIZUKI Kimihiro, SUGIOKA Hiroko, YAMADA Tomoaki, ISSE Takehi, SHITO Azusa

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas, Grant-in-Aid for Scientific Research on Priority Areas, The University of Tokyo, 2004 - 2008

  地震波トモグラフィーにより、海溝から沈み込んだ海洋プレート(スラブ)がマントル遷移層(深さ410-660km)で滞留する(スタグナント)現象が確認されてきた。しかし、それらは海域が多く、既存の地震観測網でこれ以上詳細な結果を得るのは困難であった。本研究では、スタグナントスラブの直上において海底での3 年間の地震アレイ観測を実施し、スラブの実態を詳細に解明するための地震データを得て解析を行った。また、既存の地震データから、海洋プレートによりマントル内へ水が輸送されていることなどを解明した。


• Understanding of the new type volcanism on the 130 m. y. -old Cretaceous Pacific Plate

  ABE Natsue, FUJIWARA Toshiya, SUGIOKA Hiroko, BABA Kiyoshi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Agency for Marine-Earth Science and Technology, 2005 - 2007

  Petit-spot is a young volcanic field(<1 Ma) discovered on the Early Cretaceous(〜130 Ma) northwestern Pacific Plate. The volcanoes belong to petit-spot are very small knolls on the abyssal plane(〜6000 m water depth) and erupted strong to moderate alkaline basalt, generally including deep-seated xenoliths. The volcanic field is far 600 km away from the Japan Trench, any spreading centers and any hotspots. Therefore, the volcanic activity is not adequate for any existence volcanic models on Earth. In order to understand this petit spot volcanism, we've been taking multidisciplinary surveys. The main results for three years' research including the cruises using JAMSTEC R/V YOKOSUKA and KAIREI(YK05-06, KR05-10, KR06-03, KR07-06, KR07-07 and YK07-15) and shore-based research were listed below. FY2005 : Two other small knolls were discovered as the petit-spot volcanoes with SHINKAI 6500 submersible, and alkaline basalt samples were collected from the knolls. Several acoustic explorations on the petit-spot knolls and NW Pacific area with a single channel streamer(SCS). Five Ocean Bottom Electro-Magnetometers(OBEMs) were deployed and recovered around the volcanic field. The crustal heat flow measurements were taken using with Miniaturized temperature data loggers. FY2006 : Multinarrow-beam bathymetry mapping and SCS acoustic explorations were taken in the petit-spot volcanic field and surrounding area. FY2007 : Three broad band ocean bottom seismometers(BBOBSs) and three OBEMs were deployed in the volcanic field to observe the intraplate seismicity and the melt supply process in the upper mantle. Several mantle xenoliths included petit-spot alkaline basalts were sampled during SHINKAI 6500 dives. In addition to this, another petit-spot volcanic field was discovered on the outer rise near the Japan Trench. These results were published on both international and domestic journals, presented at scientific meetings and press releases.


• 広帯域海底地動水圧同時観測システムの構築

  杉岡 裕子

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Agency for Marine-Earth Science and Technology, 2005 - 2006

  本研究課題では、世界的に実績のある広帯域海底地震観測システムに独自に開発した差圧式水圧計を装備し、地動と水圧を同時に測定するシステムを開発するというものであった。特に、海洋潮汐エネルギーの散逸問題に興味があり、それを狙うためには、10^4秒の帯域で100Paの感度が必要である。独自に設計した差圧式水圧計はこのような長周期側にも高感度である。 最終年度であった今年度は、昨年度フィリピン海に設置した観測システム4機を回収した。データは期待通りのスペックを満たすものであり、1年間という長期連続データを取得することに成功した。観測期間1年の内には、千島列島で発生した津波を伴った地震や、ロタ島で発生した海底火山噴火などをとらえている。 最も興味のある海洋潮汐に関連した波のひとつとして、地動と水圧にコヒーレントな重力波の存在を確認した。また、この波は100km程度離れた複数の観測点においてもコヒーレントであり、アレイ解析を行うなどして波の起源について議論できるデータを得たことになる。これまでに、海洋中にユビキタスに存在する水中音波を地震計で検出することにより、内部潮汐波の水平方向の励起量を見積もる手法を見いだしている。一方で、独自に開発した差圧式水圧計を用いることにより、その地点での内部潮汐波の励起量を見積もることができ、地動水圧同時観測することにより、空間的な内部潮汐波の励起量を見積もることができることが期待される。今回の観測結果から、100km程度の地動水圧同時アレイ観測を行うことにより、海洋潮汐エネルギーの散逸問題に対し、地震学的観測手法から攻めることができることを確認したことは意義深い。 ところで、装備した差圧式水圧計は温度変化に伴う評価が難しい。実際の海底低温下におけるデータを解析することにより、この温度特性を評価することにも絶好の記録を得ることができたと考えている。最近開発設計した、温度校正機器を用いることにより、温度特性について評価し、それをもとに実用的な地動水圧同時観測システムとして確立していきたい。


• Japan-France cooperative study of mantle plumes by seismic observation and rock sampling on Polynesian seafloor

  FUKAO Yoshio, SUETSUGU Daisuke, SHIOBARA Hajime, HANYU Takeshi, SUGIOKA Hiroko, SUZUKI Katsuhiko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Independent Administrative Institution, Japan Agency for Marine-Earth Science and Technology, 2004 - 2006

  We deployed 10 broadband ocean bottom seismographs to improve seismic resolution for mantle structure beneath the Polynesian region to obtain detailed structure of mantle plumes. We made a sampling survey of volcanic rocks with the submersible "SHINKAI-6500" of JAMSTEC. The obtained results are as follows. 1. We determined the upper mantle S-velocity model beneath French Polynesia down to 200 km. Slow velocity anomalies were found beneath all the hot spots, while their maximum depths are different beneath different hot spots. Beneath the Society and McDonald hot spots, slow anomalies extend down at least to 200 km. 2. Thickness of the mantle transition zone was determined by a receiver function method. We detected a thin transition zone only beneath the Society hot spot and did not find significant thickness anomalies beneath other stations, indicating that mantle plumes from the lower to upper mantle in French Polynesia are not broad but is localized beneath the Society hot spot. 3. We determined P-velocity structure beneath Polynesia by travel time tomography using P-wave arrival times and differential P-wave arrival times among stations. There is a broad slow velocity anomaly at depths greater than 1000 km in the lower mantle. Slow anomalies are narrow at depths from 1000 to the bottom of the upper mantle. The upper mantle structure is relatively ill-resolved by the present data. A narrow slow anomaly in the lower mantle located beneath the Society hot spot suggests that a mantle plume is ascending from the lower mantle to the Society hot spot. 4. We could obtain good rock samples with "SHINKAI-6500" on the seafloor along the Cook-Austral islands. Composition of the seafloor rock samples are distinct from those obtained on the land area of the Cook-Austral islands, suggesting a magma source was changed with a growth of a hot spot volcano.


• 内部潮汐波の励起による海中音波速度の12時間変動

  杉岡 裕子

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Agency for Marine-Earth Science and Technology, 2003 - 2004

  海底ケーブル式アレイ地震観測から得られたデータを用い、海底火山活動のモニタリングを行っている。これまでに多数の伊豆-小笠原-マリアナ火山列での活動を捉えており、その海底火山活動に伴い励起された海中音波の速度が半日周期変動している現象を見出した。本研究では、海底地震観測によって捉えられた海中音波速度の半日周期変動のメカニズムを解明することである。 その原因が海洋潮汐に伴う内部潮汐波の半日周期成分(M2)の励起により、海中音波速度構造の変動したと考え、数値計算により、その励起率を求めた。その結果、海中音波が最も効率よく伝播する海中の低速度領域(SOFARチャンネル)が海洋潮汐に伴う内部潮汐波のM2成分の励起によってゆらいだ結果、伝播距離およびそこでの海中音波速度構造が周期変動するというメカニズムを提示した。数値計算の結果は、観測から見出された変動の振幅および位相ともにほぼ説明できる。以上を論文にまとめ投稿した。 一方、新しい海底測器を用いた観測も試みた。広帯域水圧計として差圧式水圧計を独自に開発した。これは、絶対水圧計では捉えきれない微小な圧力変動を海底で検出するための測器であり、対象とする内部潮汐波のような数センチメートルオーダーの変動量を検出することは可能であることが期待できる。これに挑戦している。試験観測として、三陸沖孔内海底地震観測点の近傍に、1日程度の観測を実施した。内部重力波(〜100秒)から脈動(〜数Hz)の帯域までをカバーする微圧計として誕生した。現在、これの連続観測(海底ケーブルに接続)を相模湾で行っている。内部潮汐波の励起を直接観測すべく、未踏の帯域10000秒で感度100Paを有する測器を目指しているところである。