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GOMEZ Andre Christopher
Graduate School of Maritime Sciences / Department of Maritime Sciences
Professor

Researcher basic information

■ Degree
  • Ph.D.
■ Research Keyword
  • Sediment Hazards and water/lake/sea interactions
  • Debris flows, lahars and landslides
  • Sediment transfers and related hazards in mountain and volcanic terrains
  • Applied subsurface geophysics (Ground Penetrating Radar and Electric Tomography)

Research activity information

■ Paper
  • Landscape mutations in the Northern Kyushu region (Japan) induced by the torrential rains of July 2017 and associated restoration projects
    Mélody Dumon, Vincent Siccard, Gilles Arnaud-Fassetta, Christopher Gomez, Candide Lissak, Vincent Viel
    Jul. 2025, Geomorphology, Relief, Processus, Environnement, French
    [Refereed]
    Scientific journal

  • C. Gomez, Y. Gonda, D. Tsutsumi, N. Hotta, D. Hori, T. Koi, B. Bradak, R. Daikai, M. Zhang, Z. Huazhu, L. Caihong
    Abstract This study investigates compound flooding on the Fugeshi River (Noto Peninsula, Japan) in the aftermath of the January 2024 Noto Peninsula earthquake (M7.6). The authors aimed to quantify the impacts of ground deformation on flooding, while integrating the historical evolution of the floodplain and potential climate change effects by simulating sea-level rise. The method is based on the analysis of aerial photographs (1947–2024), pre/post-earthquake LiDAR data, rainfall records (1944–2024), and 2D hydraulic modeling to identify flood vulnerability points from the LiDAR-derived DEMs pre- and post-earthquake. The main findings are that: (1) Rainfall intensity increased by 0.132 mm/year since 1944, with events > 14 mm/h rising by 1.4% over 70 years; (2) earthquake-induced ground deformation (1–3 m uplift) created new flooding patterns at the transition between artificially straightened downstream reaches and meandering upstream sections; (3) river modifications (1947–1965) established uneven flood protection, with smaller stopbanks upstream creating vulnerability points. In conclusion, the convergence of climate change–induced rainfall intensification, seismic ground deformation, and river engineering legacy effects amplifies flood hazards in coastal regions, highlighting the need for integrated multi-hazard flood management approaches.
    Lead, Springer Science and Business Media LLC, May 2025, Journal of Disaster Science and Management, 1(1) (1), English
    [Refereed]
    Scientific journal

  • Christopher Gomez, Danang Sri Hadmoko
    This study investigates co-seismic landslides triggered by the 1 January 2024 Mw 7.6 Noto Peninsula earthquake in Japan using LiDAR differentiation and a modified Savage–Hutter model. By analyzing pre- and post-earthquake high-resolution topographic data from 13 landslides in a geologically homogeneous area of the peninsula, we characterized distinct landslide morphologies and dynamic behaviours. Our approach combined static morphological analysis from LiDAR data with simulations of granular flow mechanics to evaluate landslide mobility. Results revealed two distinct landslide types: those with clear erosion-deposition zonation and complex landslides with discontinuous topographic changes. Landslide dimensions followed power-law relationships (H = 7.51L0.50, R2 = 0.765), while simulations demonstrated that internal deformation capability (represented by the μ parameter) significantly influenced runout distances for landslides terminating on low-angle surfaces but had minimal impact on slope-confined movements. These findings highlight the importance of integrating both static topographic parameters and dynamic flow mechanics when assessing co-seismic landslide hazards, particularly for predicting potential runout distances on gentle slopes where human settlements are often located. Our methodology provides a framework for improved landslide susceptibility assessment and disaster risk reduction in seismically active regions.
    Lead, MDPI AG, May 2025, Geosciences, 15(5) (5), 180 - 180, English
    [Refereed]
    Scientific journal

  • Somayeh Mirzaee, Mehdi Pajouhesh, Fumitoshi Imaizumi, Khodayar Abdollahi, Christopher Gomez
    Last, Elsevier BV, May 2025, Ecological Engineering, 215, 107600 - 107600, English
    [Refereed]
    Scientific journal

  • Tele-effect of Geomorphological Change on the Spatial Variability of the Precision of SfM-MVS 3D Point-cloud Models.
    Zhang Miao, Gomez Christopher, Hotta Norifumi, Daikai Rikuto, Sawada Sho, Bradak Balazs
    May 2025, AUC Geographica, English
    [Refereed]
    Scientific journal

  • Yuichi S. Hayakawa, Christopher Gomez, Teiji Watanabe, Ting Wang, Yusuke Kobayashi, Masafumi Inomata, Tomoya Sakai, Satomi Imagawa
    Elsevier BV, Apr. 2025, Environmental Challenges, 18, 101107 - 101107, English
    [Refereed]
    Scientific journal

  • Charlene Bwiza Simataa, Frans Persendt, Christopher Gomez
    ABSTRACT This study assessed stakeholders' perceptions of current methods and technologies for monitoring and controlling fisheries activities in Namibia's Exclusive Economic Zone (EEZ). The research was prompted by reports of illegal fishing and inadequate resources for effective oversight. Understanding stakeholders' views is crucial for policymakers to develop suitable monitoring approaches. A qualitative investigation was conducted using in‐depth interviews (18 participants) and three focus group discussions (22 participants). Findings revealed that men dominate Namibia's fisheries industry. Air surveillance and sea patrols are the primary monitoring measures, supplemented by Vessel Monitoring System (VMS) and Automatic Identification System (AIS) technologies. About 32.5% of participants were fisheries inspectors, observers, and researchers with 11–15 years of experience. Most participants rated current methods and technologies as good: 72.5% for sea patrols, 65% for air surveillance and 80% for technologies. Despite positive ratings, several challenges were identified: lack of resources and funding, inadequate modern infrastructure, high maintenance costs, limited stakeholder cooperation and compliance issues. These findings underscore the need for improvements in vessel documentation and authorization, monitoring methods and the adoption of advanced technologies like drones and onboard cameras. The study highlighted the importance of enhancing regional cooperation and coordination to address the challenges posed by globalization, and to realize the state's sovereignty and territorialization, with the EEZ still being a contested space.
    Last, Wiley, Mar. 2025, Aquatic Conservation: Marine and Freshwater Ecosystems, 35(3) (3), English
    [Refereed]
    Scientific journal

  • Jumadi Jumadi, Kuswaji Dwi Priyono, Choirul Amin, Aditya Saputra, Christopher Gomez, Kuok-Choy Lam, Arif Rohman, Nilanchal Patel, Farha Sattar, Muhammad Nawaz, Khusnul Setia Wardani
    The Pacitan Regency is at risk of megathrust earthquakes and tsunamis due to the seismic gap along the southern region of Java Island, making risk-reduction efforts crucial. This research aims to analyse the tsunami risk associated with a potential megathrust earthquake scenario in Pacitan’s coastal areas and develop sustainable mitigation strategies. The research employs spatial analysis to evaluate the risk and subsequently formulate strategies for long-term mitigation. A weighted overlay method was utilised to integrate hazard (H) and vulnerability (V) datasets to produce a tsunami risk map (R). The hazard component was modelled using a tsunami propagation simulation based on the Shallow Water Equations in the Delft3D-Flow software, incorporating an earthquake scenario of Mw 8.8 and H-loss calculations in ArcGIS Pro 10.3. The vulnerability assessment was conducted by overlaying population density, land use, and building footprint from the Global Human Settlement Layer (GHSL) datasets. Finally, sustainable strategies were proposed to mitigate the tsunami risk effectively. The results show that Pacitan faces significant tsunami disaster risk, with tsunami waves at the coast reaching 16.6 m. Because the coast of Pacitan is densely populated, mitigation strategies are necessary, and in the present contribution, the authors developed holistic spatial planning, which prioritise the preservation and restoration of natural barriers, such as mangroves and coastal forests.
    MDPI AG, Mar. 2025, Sustainability, 17(6) (6), 2564 - 2564, English
    [Refereed]
    Scientific journal

  • Ji-Hyeok PARK, Yoshinori SHINOHARA, Christopher GOMEZ, Norifumi HOTTA
    Japan Society of Erosion Control Engineering, Mar. 2025, International Journal of Erosion Control Engineering, 18(1) (1), 1 - 10, English
    [Refereed]
    Scientific journal

  • Rina Purwaningsih, Junun Sartohadi, Guruh Samodra, Christopher Gomez
    Last, Wydawnictwo Naukowe Gabriel Borowski (WNGB), Mar. 2025, Ecological Engineering & Environmental Technology, 26(3) (3), 301 - 314, English
    [Refereed]
    Scientific journal

  • Zhang Miao, Christopher Gomez, Yoshinori Shinohara, Norifumi Hotta
    Drone-mounted LiDAR systems have revolutionized forest mapping, but data quality is often compromised by occlusions caused by vegetation and terrain features. This study presents a novel framework for analyzing and predicting LiDAR occlusion patterns in forested environments, combining the geometric reconstruction of flight paths with the statistical modeling of ground visibility. Using field data collected at Unzen Volcano, Japan, we first developed an algorithm to retrieve drone flight paths from timestamped pointclouds, enabling post-processing optimization, even when original flight data are unavailable. We then created a mathematical model to quantify the shadow effects from obstacles and implemented Monte Carlo simulations to optimize flight parameters for different forest stand characteristics. The results demonstrate that lower-altitude flights (40 m) with narrow scanning angles achieve the highest ground visibility (81%) but require more flight paths, while higher-altitude flights with wider scanning angles offer efficient coverage (47% visibility) with single flight paths. For a forest stand with 250 trees per 25 hectares (heights 5–15 m), statistical analysis showed that scanning angles above 90 degrees consistently delivered 46–47% ground visibility, regardless of the flight height. This research provides quantitative guidance for optimizing drone LiDAR surveys in forested environments, though future work is needed to incorporate canopy complexity and seasonal variations.
    Corresponding, MDPI AG, Feb. 2025, Drones, 9(2) (2), 135 - 135, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Development of a new tool to simultaneously measure soil-gas permeability and CO2 concentration as important parameters for geogenic radon potential assessment.
    Miroslaw Janik, Christopher Gomez, Satoshi Kodaira, Dominik Grzadziel
    2025, Environmental Monitoring and Assessessment, 197(124) (124), English
    [Refereed]
    Scientific journal

  • Christopher Gomez
    On the first day of 2024, a strong Mw.7.6 earthquake followed by a tsunami shook the Noto Peninsula (Japan) located on the coast facing the Sea of Japan. It resulted in numerous casualties, infrastructures and dwelling destroyed. The earthquake also triggered an estimated 5,000 coastal and mountain co-seismic mass-movements, from which 930 were identified by aerial photographs and digitized from the emergency aerial photographs (2/1/2024). The goal has been to provide a preliminary assessment of their distribution and characteristics. The medium surface of the landslides was found to be 1,749 m2, with numerous small < 50 m2 landslides and at least one large deep-seated landslide (0.8 km × 1 km). The mountain landslides were concentrated around two clusters, which were not close to the epicentre, but around 7 km and 10 km from the epicentre. From a disaster-risk perspective, the 1/1/2024 Noto Peninsula earthquake is typical of a ‘coastal earthquake’ where the coastal landslides, even sparse collapsed on the main artery of the peninsula, the ring road, isolating communities and hampering the disaster relief process.
    Charles University in Prague, Karolinum Press, Aug. 2024, AUC GEOGRAPHICA, 1 - 8, English
    [Refereed]
    Scientific journal

  • Preliminary results of spatial distribution of radon and thoron with associated parameters in soil around active faults in Japan.
    Miroslaw Janik, Christopher Gomez, Satoshi Kodaira, M.M. Hassan
    Aug. 2024, Radiation Protection Dosimetry, 200, 1726 - 1731, English
    [Refereed]
    Scientific journal

  • Adam Madigliani Prana, Rita Dionisio, Angela Curl, Deirdre Hart, Christopher Gomez, Heri Apriyanto, Hermawan Prasetya
    Elsevier BV, Aug. 2024, Progress in Planning, 186, 100851 - 100851, English
    [Refereed]
    Scientific journal

  • Adam Madigliani Prana, Angela Curl, Maria Rita Dionisio, Christopher Gomez, Deirdre Hart, Heri Apriyanto, Hermawan Prasetya
    Purpose The ineffectiveness of flood control in climate-impacted majority-world cities like Jakarta highlights the need for policies that integrate local knowledge and embrace water harmony rather than resistance. This study explores flood adaptation in North Jakarta's kampungs (urban informal settlements), aiming to enhance the efficacy of current flood disaster management. The outcomes of the participatory planning mechanism simulation that we propose are expected to provide valuable insights for the urban planning approach in that city. Design/methodology/approach We employed focus groups and design charrettes with a bottom-up approach to explore how local knowledge can enhance spatial flood management and urban planning policies. In total, 17 diverse participants, covering various ages and professions, engaged in these activities. Our methods aimed to be culturally sensitive and inclusive, embracing indigenous values like musyawarah and gotong royong. The research methodically examined flood implications and adaptations in informal settlements, progressing through preliminary understanding, data triangulation, and a reflective synthesis of the findings. Findings Amid worsening global changes like sea level rise, community-focussed, collaborative planning can help create tailored flood-resilience solutions. The research reveals that partnerships between communities and organisations promote city-wide, flood-adapted environments, aligning policy with the needs and goals of those most affected by flooding. This collaboration enhances flood disaster management and planning policies. Research limitations/implications This research focusses on Jakarta's flood adaptation and urban planning, reflecting on historical situations relevant to urbanising majority-world countries. Whilst specific to Jakarta, it offers perspectives on managing global environmental challenges such as sea level rise. Subsequent research should prudently consider each locale's distinct geographic and social milieu and the trust in planning systems in applying these findings, methodologies and approaches. Originality/value This study clarifies the relationship between disaster management, policy and flood adaptation, focussing on local knowledge in North Jakarta, pertinent to urbanising majority-world nations. Jakarta's historical and modern dynamics, including globalisation, reveal specific prospects and obstacles to applying vernacular knowledge to planning and disaster response. It highlights crucial points for policymakers in the majority of the world to address growing flood risks and create strategies that integrate local and traditional wisdom.
    Emerald, Jul. 2024, Disaster Prevention and Management: An International Journal, English
    [Refereed]
    Scientific journal

  • SABO : the Foundation for Japan in the 21st Century
    Christopher GOMEZ
    Jun. 2024, Journal of the Sediment Disaster Reduction Society, 77(1) (1), 1 - 2, Japanese
    [Invited]
    Scientific journal

  • Sunardi Sunardi, Moh. Dede, Sandy Budi Wibowo, Yudo Prasetyo, Annisa Joviani Astari, Lukman Lukman, Franck Lavigne, Christopher Gomez, Idea Wening Nurani, Yuichi Sakai, Mohd Khairul Amri Kamarudin
    Abstract River ecosystem services (RES) are vulnerable to landscape changes mainly by volcanic eruptions. Therefore, this study aims to assess RES in the volcanic area which was affected by the major and minor eruptions of Mount Merapi, Indonesia. The RES referred to the regulating and supporting services of the Krasak River in Jogjakarta. The research involved collecting water and biodiversity samples from two distinct Merapi’s hazard zones (KRB I and KRB II) along the river. Parameters related to regulating services, such as particulate, organic, and nutrient purification, biological control, as well as supporting services like primary productivity, were quantified. We conducted an analysis to understand how landscape conditions interacted with these parameters and employed the t-test to assess differences in RES between the two KRBs. Our findings revealed that the Krasak River exhibited a range of values, including 2.40–5.95 mg/l for Biological Oxygen Demand (BOD), 0.61–3.41 mg/l for nitrate, 0.02–0.11 mg/l for phosphate, 160–60,000 MPN/100 ml for coliform, and 156.3–937 µg/l for chlorophyll-A. These values demonstrated the river’s capacity to perform both regulation and support services. However, certain segments showed variations in ecosystem services, possibly due to the presence of autochthonous matter from aquatic organisms and decomposing organic matters. This showed that volcanic eruption and landscape are closely linked with the water quality and aquatic biodiversity, which affect the ecosystem services.
    Springer Science and Business Media LLC, May 2024, Aquatic Ecology, English
    [Refereed]
    Scientific journal

  • Ji-Hyeok Park, Yoshinori Shinohara, Christopher Gomez, Norifumi Hotta
    Elsevier BV, May 2024, Geomorphology, 453, 109119 - 109119, English
    [Refereed]
    Scientific journal

  • Jumadi Jumadi, Kuswaji Dwi Priyono, Annisa Trisnia Sasmi, Aditya Saputra, Christopher Gomez
    International Journal of Geomate, Apr. 2024, International Journal of GEOMATE, 26(116) (116), English
    [Refereed]
    Scientific journal

  • Mukhamad Ngainul Malawani, Franck Lavigne, Karim Kelfoun, Pierre Lahitte, Danang Sri Hadmoko, Christopher Gomez, Patrick Wassmer, Syamsuddin Syamsuddin, Audrey Faral
    Springer Science and Business Media LLC, Mar. 2024, Bulletin of Volcanology, 86(3) (3), English
    [Refereed]
    Scientific journal

  • C Gomez, N Hotta, Y Shinohara
    Abstract On 13th August 2021 at Unzen Volcano (Japan), an 81 mm.hr-1 peak-rainfall (1486 mm in 2 weeks) triggered series of erosion and deposition features in the Tansandani and the Gokurakudani gullies, all adding up to 57,800 m3 of erosion and 39,600 m3 of deposition. Upstream of the Sabo dam located at the exit of the Tansandani Gully, a large deposit has been visually identified as a potential debris-flow front candidate. However, the absence of direct observation leaves some uncertainty on the process that deposited the material and the magnitude of the flow. In the present contribution, the authors are investigating (1) the role of the debris-flow body in constructing the deposit and (2) the role of the tail of the debris-flow in eroding the fresh deposit. To reach this objective, the authors have combined a field investigation with direct observation, UAV (Unmanned Aerial Vehicle) LiDAR (Light Detection And Ranging) and Photogrammetry, and GIS (Geographic Information System) analysis of the field data. From this data, a 2D hydrodynamic simulation and sediment transport models were applied. The results show that the debris-flow ran beyond the first Sabo dam, with part of the material trapped on both sides of the gully. Afterwards, a central channel connected to sub-channels conveyed the diluted flow, most probably < 25 cm with maximum velocities between 4 to 5 m.s-1 at peak flow. Only the debris-flow phase went over the internal shoulders of the Sabo dam. A lobe occupies the top half of the study area and its deposition has been discussed to be related to the sudden widening of the gully, while the lower half is connected to the base-level created by the check dam.
    IOP Publishing, Mar. 2024, IOP Conference Series: Earth and Environmental Science, 1313(1) (1), 012024 - 012024
    Scientific journal

  • Rikuto Daikai, Christopher Gomez, Norifumi Hotta, Yoshinori Shinohara
    Abstract As climate change creeps into the 21st century, the intensity of debris flows due to heavy and concentrated rainfall has increased in mountainous regions of Japan and East Asia. However, the relationship between climate change and an increase in debris flows is likely to be non-linear. Rainwater infiltrates more quickly into porous material, and the lack of vegetation cover increases evaporation and the temperature of surface sediments. In addition, periodic gully collapses bring fresh layers of porous material that increase the distance between the surface and the vadose zone. Therefore, to understand the relationship between volcanic debris flows (or lahars), parameters such as density, porosity, temperature, and moisture retention must be captured in detail in both time and space. The aim of this paper is to assess the role of loose, coarse, and porous sediments in lahar triggering. The present study was conducted at Unzen volcano in the Tansandani Guly between 31 May and 1 June 2023, 30 years after the last eruption. The dacite material is composed of a matrix of sand and coarse sand mixed with larger fractions and blocks, therefore traditional density measurement methods could not be applied, and a photogrammetric based method was used. In the field, sets of SfM-MVS photographs were taken before and after digging a hole in the sediments so that the measured mass could be compared to the volume of the hole in the sediments. After the sediments were dried, the dry and wet density, bulk density and porosity of the sample were calculated. When compared to the temperature data collected in the field, the following results were obtained: (1) The porosity of the volcanic material was highest in the lower reaches, followed by the upper reaches, and lowest in the middle reaches. This may be because fine sand washed out of the upstream area by rainfall is currently stored in the midstream area, which may facilitate debris flow generation. In addition, the downstream area has a high porosity, which may be due to the surrounding vegetation preventing the influx of new fine sand from the channel wall. (2) Because of the higher porosity and the lack of organic matter and vegetation cover, the increase in temperature acts more directly on the decrease in water content than in mountainous areas. Consequently, empirical equations for the potential for mudslides in volcanic areas with respect to surface temperature and soil moisture need to be developed for hazard and disaster risk management purposes.
    IOP Publishing, Mar. 2024, IOP Conference Series: Earth and Environmental Science, 1314(1) (1), 012065 - 012065
    Scientific journal

  • Saleh Yousefi, Somayeh Mirzaee, Christopher Gomez
    Elsevier, 2024, Remote Sensing of Soil and Land Surface Processes, 249 - 255, English
    [Refereed]
    In book

  • Somayeh Mirzaee, Christopher Gomez, Mehdi Pajouhesh, Khodayar Abdollahi
    Elsevier, 2024, Remote Sensing of Soil and Land Surface Processes, 271 - 279
    [Refereed]
    In book

  • Christopher Gomez, Jiaqi Liu, Jing Wu, Frans Persendt, Balazs Bradak, Yousefi Saleh, Danang Sri Hadmoko
    In this article, desertification and dune progression over vegetation was quantified using remote sensing data. However, vegetation buried under sand blowout could not be counted using this method. Therefore, to estimate the extent of buried vegetation, a GPR campaign was conducted over the coastal sand-dune of Tottori Prefecture (Japan) in combination with a high-resolution topographic UAV-based survey of the topography. The results show that buried vegetation exists underneath sand-blowout, especially near the dune ridges, and can extend from 20 to 30 meters further than the estimate based on airborne remote sensing. Furthermore, the presence of palaeo-vegetation in palaeodune layers also provides the information on the long-term evolution of sand dunes, which can be used to reconstruct Quaternary coastal environments.
    Lead, Charles University in Prague, Karolinum Press, Dec. 2023, AUC GEOGRAPHICA, 58(2) (2), 238 - 249, English
    [Refereed]
    Scientific journal

  • Balázs Bradák, Ákos Kereszturi, Christopher Gomez
    Last, Elsevier BV, Nov. 2023, Advances in Space Research, 72(9) (9), 4064 - 4073, English
    [Refereed]
    Scientific journal

  • Mélody Dumont, Christopher Gomez, Gilles Arnaud-Fassetta, Candide Lissak, Vincent Viel
    On 5–6 July 2017, an unstable atmospheric condition caused an unusual concentration of rainfall above the Northern part of Kyushu Island, triggering a set of hydro-meteorological hazards. Within the affected area, the mountainous subwatershed of the Akatani River was significantly impacted by numerous landslides combined with debris flow and floods. National and local agencies deployed a plan of reconstruction to restore the floodplain and protect inhabitants. Regarding the hydrosystem in the Akatani watershed, this reconstruction project mainly focuses on the restoration of damaged protection systems and the construction of new infrastructures. Thus, this paper aims to explain the restoration plan of the Akatani River in terms of the strategic Japanese River System Sabo and then as a model of a national-scale spatial plan. It draws on (i) a literature review based on the historical evolution of Japanese protection systems and the River Sabo System; (ii) field surveys in 2019, 2022 and 2023, in conjunction with (iii) interviews with local, regional, and national officials; and (iv) a Geographical Information System analysis of previously and newly built protection systems through aerial photograph interpretation and geospatial data. Sabo works implemented in the Akatani watershed illustrate the engineering vision of Japanese river management. They also constitute a comprehensive system and include a downstream–upstream logic which echoes that of the River System Sabo. In addition, the disaster of July 2017 and the government’s response emphasize the continuous adaptation and improvement of the Japanese disaster management system, which mitigates severe disasters.
    MDPI AG, Oct. 2023, Sustainability, 15(21) (21), 15331 - 15331, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Mélody Dumont, Gilles Arnaud-Fassetta, Christopher Gomez, Candide Lissak, Vincent Viel
    MDPI, Jul. 2023, IECG 2022, English
    [Refereed]
    International conference proceedings
    Link to Kobe Univ. Repository (Kernel)

  • Balázs Bradák, Mayuko Nishikawa, Christopher Gomez
    The study introduces a theory about an Evander-size impact on the surface of Dione. Our study suspects a relatively low-velocity (≤5 km/s) collision between a ca. 50–80 km diameter object and Dione, which might have resulted in the resurfacing of one of the satellite’s intermediate cratered terrains in various ways, such as surface planing by “plowing” by ricocheting ejectiles, ejecta blanket covering, partial melting, and impact-triggered diapir formation associated with cryotectonism and effusive cryo-slurry outflows. Modeling the parameters of an impact of such a size and mapping the potential secondary crater distribution in the target location may function as the first test of plausibility to reveal the location of such a collision, which may be hidden by younger impact marks formed during, e.g., the Antenor, Dido, Romulus, and Remus collision events. The source of the impactor might have been Saturn-specific planetocentric debris, a unique impactor population suspected in the Saturnian system. Other possible candidates are asteroid(s) appearing during the outer Solar System’s heavy bombardment period, or a collision, which might have happened during the “giant impact phase” in the early Saturnian system.
    MDPI AG, May 2023, Universe, 9(6) (6), 247 - 247
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Rikuto Daikai, Christopher Gomez, Balazs Bradak, Norifumi Hotta, Yoshinori Shinohara
    MDPI, Mar. 2023, IECG 2022, 30 - 30
    International conference proceedings

  • Miao Zhang, Christopher Gomez, Balazs Bradak, Hotta Norifumi, Shinohara Yoshinori
    MDPI, Dec. 2022, IECG 2022, 11 - 11
    International conference proceedings

  • Formation Processes of Gully-side Debris-Cones Determined from Ground-Penetrating Radar (Mt. Unzen, Japan)
    Gomez, C, Hotta, N, Shinohara, Y, Park, H.-Y, Tsunetaka, H, Zhang, M, Bradak, B, Hadmoko, D.S, Budi Widowo, S, Daikai, R, Yoshida, M
    Dec. 2022, Journal of Applied Geophysics, 104919, 1 - 10, English
    [Refereed]
    Scientific journal

  • Balázs Bradák, Ákos Kereszturi, Vilmos Steinmann, Christopher Gomez, Diána Csonka, Masayuki Hyodo, József Szeberényi, Ágnes Novothny, Tamás Végh, Gabriella Barta, Alzbeta Medveďová, Pavel Rostinsky, Enikő Mihály, Viviána Jó, Erzsébet Horváth
    Elsevier BV, Nov. 2022, Icarus, 387, 115210 - 115210
    Scientific journal

  • Balázs Bradák, Jun Kimura, Christopher Gomez, Ákos Kereszturi
    Elsevier BV, Nov. 2022, Icarus, 391, 115367 - 115367
    [Refereed]
    Scientific journal

  • Sediment Bulk Density Field Measurement using SfM-MVS: Case study from the Hiru-dani Debris-flow and Catchment
    Christopher GOMEZ, Shusuke MIYATA, Mikito KATAOKA, Kensuke ASHIKAGA, Sayaka KANAI, Balazs BRADAK, Masaharu FUJITA
    Lead, Nov. 2022, 砂防学会誌, 75(4) (4), 25 - 29
    [Refereed]

  • Detection and Velocimetry of Floating Wood-Debris for Flood Disaster Risk Management using Electromagnetic Imaging
    Gomez, C, Hotta, N, Miyata, S, Bradak, B, Kataoka, M, Ashikaga, K, Persendt, F
    Oct. 2022, IECG2022 Proceedings sciforum-065204, English
    [Refereed]
    International conference proceedings

  • Machine-Learning Simulation of the XRain data against rain-gauge over complex topography
    Zhang, M, Gomez, C, Bradak, B, Hotta, N, Shinohara, Y
    Oct. 2022, IECG2022 Proceedings, English
    [Refereed]
    International conference proceedings

  • Compositional analysis of Unzen Dacite using Quantum beams
    Murata, E., Kanasaki, M., Taniike, A., Seto, Y., Bradak, B., Gomez, C.
    Last, Oct. 2022, IECG2022 Proceedings, English
    [Refereed]
    International conference proceedings

  • The role of wood-debris in debris-flow fan deposition processes - results from flume experiments
    Kataoka, M, Ashikaga, K, Gomez, C
    Oct. 2022, IECG2022 Proceedings sciforum-065441, English
    [Refereed]
    International conference proceedings

  • Tsunami Vulnerability of Structures on Izu-Oshima Island
    Nakamura, S, Imai, K, Sano, N, Bradak, B, Gomez, C
    Last, Oct. 2022, IECG2022 Proceedings sciforum-065409, English
    [Refereed]
    International conference proceedings

  • From the disaster to the forced (re)construction: the example of the Akatani catchment
    Dumont, M, Arnaud-Fassetta, G, Gomez, C, Lissak, C, Siccard, V, Viel, V
    Oct. 2022, IECG2022 Proceedings sciforum-065466, English
    [Refereed]
    International conference proceedings

  • Introduction to "radical" working hypothesis about a hemisphere-scale impact on Dione (Saturn)
    Bradak, B., Nishikawa, M., Gomez, C.
    Last, Oct. 2022, English
    International conference proceedings

  • Terrestrial paleo-dessication marks and their role in Martian Paleoenvironment reconstructions
    Bradak, B, Nakaoka, R, Gomez, C, Novak, R, Koi, T
    Oct. 2022, ECU2023 sciforum-066328, English
    [Refereed]
    International conference proceedings

  • Evaluation of the potential of the optical maturity space weathering index as a relative dating tool
    Novak, R, Bradak, B, Kereszturi, A, Gomez, C
    Last, Oct. 2022, IECG2022 Proceedings sciforum-064463, English
    [Refereed]
    International conference proceedings

  • Gomez C, Setiawan MA, Listyaningrum N, Wibowo SB, Hadmoko DS, Suryanto W, Darmawan H, Bradak B, Daikai R, Sunardi S, Prasetyo Y, Astari AJ, Lukman L, Nurani IW, Dede M, Suhendro I, Lavigne F, Malawani MN
    Oct. 2022, Remote Sensing, 14(5193) (5193), 1 - 10, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Effects of driftwood on erosion of debris-flows
    Ashikaga, K, Kataoka, M, Gomez, C, Miyata, S
    Sep. 2022, IECG2022 Proceedings
    [Refereed]
    International conference proceedings

  • Yousefi, S, Mirzaee, S, Almohamad, H, Al Dughairi, A.A, Gomez, C, Siamian, N, Alrasheedi, M, Abdo, H.G
    Land use/cover (LU/LC) classification provides proxies of the natural and social processes related to urban development, providing stakeholders with crucial information. Remotely sensed images combined with supervised classification are common to define land use, but high-performance classifiers remain difficult to achieve, due to the presence of model hyperparameters. Conventional approaches rely on manual adjustment, which is time consuming and often unsatisfying. Therefore, the goal of this study has been to optimize the parameters of the support vector machine (SVM) algorithm for the generation of land use/cover maps from Sentinel-2 satellite imagery in selected humid and arid (three study sites each) climatic regions of Iran. For supervised SVM classification, we optimized two important parameters (gamma in kernel function and penalty parameter) of the LU/LC classification. Using the radial basis function (RBF) of the SVM classification method, we examined seven values for both parameters ranging from 0.001 to 1000. For both climate types, the penalty parameters (PP) showed a direct relationship with overall accuracy (OA). Statistical results confirmed that in humid study regions, LU/LC maps produced with a penalty parameter >100 were more accurate. However, for regions with arid climates, LU/LC maps with a penalty parameter >0.1 were more accurate. Mapping accuracy for both climate types was sensitive to the penalty parameter. In contrast, variations of the gamma values in the kernel function had no effect on the accuracy of the LU/LC maps in either of the climate zones. These new findings on SVM image classification are directly applicable to LU/LC for planning and environmental and natural resource management.
    MDPI AG, Jun. 2022, Land, 11(993) (993), 1 - 14, English, No password
    [Refereed]
    Scientific journal
    添付ファイルのURL

  • Particle tracing using automated analysis of sediment roughness from image processing
    Sayaka KANAI Christopher, GOMEZ Yoshinori, SHINOHARA Norifumi HOTTA
    Corresponding, Mar. 2022, 砂防学会誌, 74-6(359) (359), Japanese
    [Refereed]
    Scientific journal

  • B. Bradák, G. Újvári, T. Stevens, M. F. Bógalo, M. I. González, M. Hyodo, C. Gomez
    Last, Jan. 2022, Palaeogeography, Palaeoclimatology, Palaeoecology, 585
    [Refereed]
    Scientific journal

  • Balázs Bradák, Christopher Gomez, Yoshinori Shinohara, Norifumi Hotta
    Internal temperature variations of pyroclastic flows and their deposits are arguably the most challenging data to acquire. As a preliminary study of the temperature variation inside pyroclastic flows, the remains of Onokoba Elementary School (Shimabara, Japan) were investigated. The elementary school is located in the close vicinity of Unzen volcano and was hit by one of the largest pyroclastic flows during the latest active period of the volcano on 15th of September 1991. This present preliminary study aims to determine the temperature exposure of various portion of the school building using field-forensic and urban geology. Natural hazard methods applied to the damaged materials exposed to high temperature have generated a temperature fingerprint the maximum temperature distribution. Charred wooden parts and plastic gutters installed on the schoolyard-side faced of the building turns out to be the most useful temperature indicators. The various deformation and alterations of the studied materials show significant differences in the temperature exposed to. Such differences on the second-floor section (between 75-110°C and 120-150°C) and on the first-floor section (above 435-557°C) of the building do not simply imply significant temperature heterogeneity in short distance (some ten to ≤100 m) inside the pyroclastic flow, but also points toward the possible effects of the building architecture on some key dynamic parameter of the pyroclastic flow. Such information may be important for planning future hazard mitigation actions.
    Universitas Muhammadiyah Surakarta, Dec. 2021, Forum Geografi, 35(2) (2)
    Scientific journal

  • Franck Lavigne, Julie Morin, Patrick Wassmer, Olivier Weller, Taaniela Kula, Ana V. Maea, Karim Kelfoun, Fatima Mokadem, Raphael Paris, Mukhamad Ngainul Malawani, Audrey Faral, Mhammed Benbakkar, Ségolène Saulnier-Copard, Céline M. Vidal, Tu’I’ahai Tu’I’afitu, Fuka Kitekei’aho, Martine Trautmann, Christopher Gomez
    The pre-colonial history (i.e. before the 16th century) of Tonga and West Polynesia still suffers from major gaps despite significant scientific advances in recent years, particularly in the field of archaeology. By the 14th century, the powerful Tu’i Tonga kingdom united the islands of the Tongan archipelago under a centralised authority and, according to tradition, extended its influence to neighbouring island groups in the Central Pacific. However, some periods of deep crisis were identified, e.g. in the mid- 15th century, marked by an abrupt cessation of inter-archipelago migration on the deep seas in the Pacific, significant cultural changes, and a decrease in accessible natural resources. The origins of these disturbances are still debated, and they are usually assigned to internal political problems or loss of external influence vis-à-vis neighboring chiefdoms. However, the hypothesis of a major natural disaster was rarely suggested up to now, while field evidence points to the occurrence of a very large tsunami in the past, including the presence of numerous megablocks that were deposited by a “red wave” (or peau kula, which also mean tsunami in the Tongan language) according to a local myth. Drawing on a body of new evidence from sedimentary signatures and radiocarbon dating of charcoal and marine bioclasts, geomorphology, and sedimentology, in support of previously published archaeological data, we argue that a large tsunami inundated large areas of Tongatapu island in the mid-15th century with runup heights up to 30 m, and that the Tu’i Tonga kingdom was severely impacted by this event. We also discuss the likely sources of this tsunami.
    Last, Frontiers Media SA, Dec. 2021, Frontiers in Earth Science, 9, 1 - 15, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Gomez, C, Shinohara, Y, Tsunetaka, H, Hotta, N, Bradak, B, Sakai, Y
    In the aftermath of pyroclastic density current-dominated eruptions, lahars are the main geomorphic agent, but at the decadal scale, different sets of processes take place in the volcanic sediment cascade. At Unzen volcano, in the Gokurakudani gully, we investigated the geomorphologic evolution and how the topographic change and the sediment change over time is controlling this transition. For this purpose, a combination of LiDAR data, aerial photography and photogrammetry, ground penetrating radar and sediment grain size analysis was done. The results show choking zones and zones of enlargement of the gully, partly controlled by pre-eruption topography, but also by the overlapping patterns of the pyroclastic flow deposits of 1990–1995. The ground penetrating radar revealed that on top of the typical lahar structure at the bottom of the gully, side wall collapses were trapping finer sandy sediments formed in a relatively low-energy deposition environment. This shows that secondary processes are taking place in the sediment transport process, on top of lahar activity, but also that these temporary dams may be a source of sudden sediment and water release, leading to lahars. Finally, the sediments from the gully walls are being preferentially oozed out of the pyroclastic flow deposit, meaning that over longer period of time, there may be a lack of fines, increasing permeability and reducing internal pore pressure needed for lahar triggering. It also poses the important question of how much of a past event one can understand from outcrops in coarse heterometric material, as the deposit structure can remain, even after losing part of its fine material.
    MDPI AG, Nov. 2021, Geosciences, 11(457) (457), 457 - 457, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Christopher Gomez, Norifumi Hotta
    Sep. 2021, Remote Sensing, 13(17) (17)
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Haruka Tsunetaka, Yoshinori Shinohara, Norifumi Hotta, Christopher Gomez, Yuichi Sakai
    Wiley, May 2021, Earth Surface Processes and Landforms, 46(11) (11), 2141 - 2162
    [Refereed]
    Scientific journal

  • Mukhamad N. Malawani, Franck Lavigne, Christopher Gomez, Bachtiar W. Mutaqin, Danang S. Hadmoko
    Mar. 2021, Geosciences (Switzerland), 11(3) (3), 1 - 18
    [Refereed]

  • Bachtiar Mutaqin, Franck Lavigne, Patrick Wassmer, Martine Trautmann, Puncak Joyontono, Christopher Gomez, Bagus Septiangga, Jean-Christophe Komorowski, Junun Sartohadi, Danang Sri Hadmoko
    Jan. 2021, Geosciences, 11(2) (2), 1 - 20, English
    [Refereed]
    Scientific journal

  • Purdie, H, Bealing, P, Gomez, C, Anderson, B, Marsh, O.J
    Dec. 2020, Geografiska Annaler, 103(2) (2), 167 - 185, English
    [Refereed]
    Scientific journal

  • High-resolution Point-cloud for Landslides in the 21st Century: from data acquisition to new Processing Concepts
    GOMEZ Christopher, ALLOUIS Tristan, LISSAK Candide, HOTTA Norifumi, SHINOHARA Yoshinori, HADMOKO, Danang, VILIMEK Vit, WASSMER Patrick, LAVIGNE Franck, SETIAWAN Angri, SARTOHADI Junun, SAPUTRA Aditya, RAHARDIANTO Trias
    Dec. 2020, World Landslide Forum 5 Publication, English
    [Refereed][Invited]
    In book

  • Mariko Shimizu, Sayaka Kanai, Norifumi Hotta, Candide Lissak, Christopher Gomez
    In recent years, heavy rainfall leading to floods, landslides and debris-flow hazards have had increasing impacts on communities in Japan, because of climate change and structural immobilism in a changing and ageing society. Decreasing rural population lowers the human vulnerability in mountains, but hazards can still leave the mountain to the plains and sea, potentially carrying drifted-wood. The aim of the paper is to measure the distribution of wood-debris deposits created by the 2017 Asakura disaster and to rethink the distribution and spatial extension of associated disaster-risk zoning. For this purpose, the authors: (1) digitized and measured the distribution of drifted-wood, (2) statistically analyzed its distribution and (3) calculated the potential impact force of individual drifted timber as a minimal value. The results have shown that there is a shortening of the wood debris as they travel downstream and that the geomorphology has an important control over deposition zones. The result of momentum calculation for different stems’ length show spatially differentiated hazard-zones, which limit different disaster-risk potentials. From the present finding, we can state that we (1) need to develop separate strategies for sediments and wood debris (2) and for wood hazards, zonations can be generated depending on the location and the size of the deposited trees that differs spatially in a watershed.
    Universitas Muhammadiyah Surakarta, Nov. 2020, Forum Geografi, 34(2) (2)
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • In-flow Self-Comminution of Debris-flow and Lahars: Fragmentation and Grinding Experiments for the Dacites from Unzen-Volcano
    Gomez, C, Shinohara, Y, Hotta, N, Tsunetaka, H
    Oct. 2020, Proceedings of the Symposium on Sediment-Related Disasters, 10, 127 - 132, English, No password
    [Refereed]
    Symposium
    添付ファイルのURL

  • Candide Lissak, Annett Bartsch, Marcello De Michele, Christopher Gomez, Olivier Maquaire, Daniel Raucoules, Thomas Roulland
    Springer Science and Business Media LLC, Sep. 2020, Surveys in Geophysics, 41(6) (6), 1391 - 1435
    [Refereed]
    Scientific journal

  • Aditya Saputra, Christopher Gomez, Ioannis Delikostidis, Peyman Zawar-Reza, Danang Sri Hadmoko, Junun Sartohadi
    Informa UK Limited, Aug. 2020, Geo-spatial Information Science, 24(2) (2), 1 - 23
    [Refereed]
    Scientific journal

  • Fitzgerald, R.H, Kennedy, B.M, Gomez, C, Wilson, T.M, Simons, B, Leonard, G.S, Matoza, R.S, Jolly, A.D, Garaebiti, E
    Aug. 2020, Volcanica: Journal of Applied Volcanology, 3(2) (2), 184 - 204, English, No password
    [Refereed]
    Scientific journal
    添付ファイルのURL

  • Fine Sedimentation ＆Infiltration Underneath Debris Flows: Preliminary Results
    Gomez, C.
    May 2020, Sabo Engineering and Scientific Society Proceedings

  • Internal structure of debris flow deposits using UAV photogrammetry and GPR in Kawajiri Town, downstream of Kure City, Hiroshima Prefecture, 2018
    Imai, K., Gomez, C.
    May 2020, Sabo Engineering and Scientific Society Proceedings

  • Characteristics of water and sediment discharge in Tansan-dani gully of Mt. Unzen
    Park, J., Shinohara, Y., Hotta, N., Gomez, C.
    May 2020, Sabo Engineering and Scientific Society Proceedings

  • Ground-Penetrating-Radar Investigation of sedimentation in Sabo dam
    Shimizu, M, Gomez, C.,, Hotta, N.,, Tanaka, N.
    May 2020, Sabo Engineering and Scientific Society Proceedings

  • Analysis of the drifted wood distribution in the aftermath of the 2017 Asakura disaster
    Kanai, S., Shimizu, M., Gomez, C., Uchida, T.
    May 2020, Sabo Engineering and Scientific Society Proceedings, Japanese

  • Toward the Prediction of Sediment Runoff in the Mizunashi River Basin
    Shinohara, Y., Hotta, N., Gomez, C., Tsunetaka, H.
    May 2020, Sabo Engineering and Scientific Society Proceedings, Japanese

  • gnacio de la Higuera, George W Kasun, Ellis L Torrance, Alyssa A Pratt, Amberlee Maluenda, Jonathan Colombet, Maxime Bisseux, Viviane Ravet, Anisha Dayaram, Daisy Stainton, Simona Kraberger, Peyman Zawar-Reza, Sharyn Goldstien, James V Briskie, Robyn White, Helen Taylor, Christopher Gomez, David G Ainley, Jon S Harding, Rafaela S Fontenele, Joshua Schreck, Simone G Ribeiro, Stephen A Oswald, Jennifer Arnold, François Enault, Arvind Varsani, Kenneth M Stedman.
    Feb. 2020, Cold Spring Harbor Laboratory Pub. BioRxiv, 11(5) (5), 1 - 17, English
    [Refereed]
    Scientific journal

  • Christopher Gomez, Aditya Saputra, Hiroki Matsui
    Blue Eyes Intelligence Engineering and Sciences Publication, Sep. 2019, International Journal of Recent Technology and Engineering, 8(2) (2), 584 - 588, English
    Scientific journal

  • Coastal Evolution, Geomorphic Processes and Sedimentary Records in the Anthropocene
    Gomez, C., Hart, D., Wassmer, P., Imai, K., Matsui, H.,Shimizu, M.
    Jul. 2019, Forum Geografi, 33, 1 - 24, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Climate Change and Population Depletion Control over Sediment Hazard and Drifted Wood Hazards in Japan
    Shimizu, M., Gomez, C., Uchida, T.
    May 2019, Sabo Engineering and Scientific Society Proceedings, English
    Symposium

  • Material Fragmentation in the lahar of Unzen Volcano: implications for the transport processes
    Gomez, C., Hotta, N., Shinohara, Y., Tsunetaka, H.
    May 2019, Sabo Engineering and Scientific Society Proceedings, English
    Symposium

  • Earthquake Triggered Multi-Hazard and Risk study Based on Remote Sensing and Geographic Information System
    SAPUTRA A, GOMEZ ANDRE CHRISTOPHER, DEKILOSTIDIS, I, ZAWAR-REZA, P, SRI HADMOKO, D, SARTOHADI J
    Jan. 2019, Geosciences, English
    [Refereed]
    Scientific journal

  • Geotourism and risk: A case study of a rockfall hazard at Fox Glacier, New Zealand
    Heather Purdie, Stephen Espiner, Christopher Gomez
    Edward Elgar Publishing Ltd., Oct. 2018, Handbook of Geotourism, 139 - 151, English
    In book

  • The controls of Mass-movements on drifted wood production and residence during the July 2017 Asakura Disaster, Kyushu, Japan
    GOMEZ ANDRE CHRISTOPHER, Hotta, N., TSUNETAKA H, SHINOHARA Y, UCHIDA T, SHIMIZU M
    Aug. 2018, 16th International Symposium on Geo-disaster Reduction, English
    [Refereed][Invited]
    International conference proceedings

  • In 27 years, lahars have reached some maturity at Mt Unzen Fugendake: geophysical and geomorphometric evidences
    GOMEZ ANDRE CHRISTOPHER, HOTTA, N, TSUNETAKA H, SHINOHARA H, SAKAI Y, KITAMOTO G, SAKAMOTO M
    Aug. 2018, 16th International Symposium on Geo-disaster Reduction, English
    International conference proceedings

  • Geo-physical, -logical, and -morphological investigations of lahars at Semeru Volcano - learning from sediments and multi-imaging
    GOMEZ ANDRE CHRISTOPHER, LAVIGNE F, HADMOKO S.D, WASSMER P, SETIAWAN A, MARDIATNO D, SARTOHADI J
    Aug. 2018, 16th International Symposium on Geo-disaster Reduction Proceedings, English
    [Refereed]
    International conference proceedings

  • Development of a model for estimating the occurrence of debris flows at Mt. Unzen
    SHINOHARA Y, TSUNETAKA H, GOMEZ ANDRE CHRISTOPHER, KITAMOTO G, HOTTA N, SAKAI Y, SAKAMOTO M
    Aug. 2018, 16th International Symposium on Geo-disaster Reduction ICGDR, English
    [Refereed]
    International conference proceedings

  • Deciphering flooding characteristics for three predecessors of the 2011 Tohoku-Oki tsunami at Sendai, Japan
    WASSMER P, GOMEZ ANDRE CHRISTOPHER, HART D.E, HIRAISHI T, AZUMA R, KOENIG B, TRAUTMANN M
    Aug. 2018, 16th International Symposium on Geo-disaster Reduction, English
    International conference proceedings

  • Danang Sri Hadmoko, Edouard de Belizal, Bachtiar Wahyu Mutaqin, Gilang Arya Dipayana, Muh Aris Marfai, Franck Lavigne, Junun Sartohadi, Suratman Worosuprojo, Colette C. A. Starheim, Christopher Gomez
    Springer Netherlands, Jun. 2018, Natural Hazards, 1 - 26, English
    [Refereed]
    Scientific journal

  • Earthquake and stormwater lifelines: a method for revealing multi-hazard interactions to improve Engineering Resilience
    HART D, GOMEZ ANDRE CHRISTOPHER, GIOVINAZZI S, DAVIES C
    Jun. 2018, ECEE Publications, English
    [Refereed]
    International conference proceedings

  • 雲仙普賢岳ガリーにおける崖錐発達の実態と土石流発生条件との関係
    北本 楽, 経隆 悠, 篠原 慶規, 堀田 紀文, GOMEZ ANDRE CHRISTOPHER, 酒井 佑一, 矢野 敦久
    May 2018, 平成30年度日本砂防学会 Proceedings, Japanese
    Research society

  • “GOTONG ROYONG” : APLIKASI SELULER INTERAKTIF DALAM MANAJEMEN TANGGAP DARURAT
    SETIAWAN M.A, BANGSA J.P, KRISTIANA N.P, ISMAIL M, Muhammad R.A, PRASTIKA K.P, MARDIATNO D, SUSMAYADI M, WINARYO, NGADISIH, GOMEZ ANDRE CHRISTOPHER
    May 2018, Proceedings of: PERTEMUAN ILMIAH TAHUNAN- RISET KEBENCANAAN
    [Refereed]
    Scientific journal

  • Understanding the Variations of Internal Sedimentary Structures and Material Characteristics at Unzen using Ground Penetrating Radar
    GOMEZ ANDRE CHRISTOPHER, HOTTA N, SHINOHARA Y, SAKAI Y, TSUNETAKA H, YANO A, SAKAMOTO M
    May 2018, 平成30年度日本砂防学会 Proceedings, 2p., English
    Research society

  • Shallow Landslides & Drifted Wood Hazards following the July 2017 Rainfall Event in Asakura, Kyushu
    GOMEZ ANDRE CHRISTOPHER, HOTTA N, SHINOHARA Y, TSUNETAKA H, LISSAK C, SHIMIZU M
    May 2018, The 5th International Symposium on Mega Earthquake Induced Geo-disasters and Long Term Effects, English
    International conference proceedings

  • Point-cloud Technology and 2D Computational Flow Dynamic Modelling for Rapid Hazards and Disaster Risk Appraisal on Yellow-Creek Fan, Southern Alps of New Zealand
    GOMEZ ANDRE CHRISTOPHER, PURDIE H
    May 2018, Progress in Earth and Planetary Science, English
    [Refereed][Invited]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Gotong Royong Aplokasi Selular Interaktif
    GOMEZ ANDRE CHRISTOPHER
    May 2018, Permetuan Ilmiah Tahunan Ke-5 riset Kebenchanaan 2018 Ikatan Ahli Kebencanaan Indonesia, ISBN 978-602-5539-28-2, 664 - 670
    [Refereed]
    International conference proceedings

  • Glacier Recession Uncorks Sediment Transfer at Fox Glacier (NZ)
    GOMEZ ANDRE CHRISTOPHER, PURDIE H
    May 2018, Proceedings of The 5th International Symposium on Mega Earthquake Induced Geo-disasters and Long Term Effects, 2p., English
    International conference proceedings

  • Dome Evolution at Unzen Volcano between 2003 and 2015: Erosion and Destabilization
    GOMEZ ANDRE CHRISTOPHER, HOTTA N, SHINOHARA Y
    May 2018, Proceedings of The 5th International Symposium on Mega Earthquake Induced Geo-disasters and Long Term Effects, 2p., English
    International conference proceedings

  • Aditya Saputra, Christopher Gomez, Ioannis Delikostidis, Peyman Zawar-Reza, Danang Sri Hadmoko, Junun Sartohadi, Muhammad Anggri Setiawan
    MDPI AG, Apr. 2018, Geosciences (Switzerland), 8(4) (4), English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • C. Gomez
    Elsevier B.V., Apr. 2018, Journal of Volcanology and Geothermal Research, 354, 57 - 66, English
    [Refereed]
    Scientific journal

  • C. Gomez, F. Lavigne, D. Sri Hadmoko, P. Wassmer
    Elsevier B.V., Mar. 2018, Journal of Volcanology and Geothermal Research, 353, 102 - 113, English
    [Refereed]
    Scientific journal

  • GOMEZ ANDRE CHRISTOPHER, KENNEDY B
    Dec. 2017, Journal of Volcanology and Geothermal Research, English
    [Refereed]
    Scientific journal

  • Tsunami Flood Simulation Investigation using NAYS-2D code in Kobe-City
    GOMEZ C
    Jun. 2017, HAL Scientific Open Archives, hal-01531850, English
    Scientific journal

  • Claire Kain, Patrick Wassmer, James Goff, Catherine Chague-Goff, Christopher Gomez, Deidre Hart, Daniela Fierro, Geraldine Jacobsen, Atun Zawadzki
    Apr. 2017, EARTH SURFACE PROCESSES AND LANDFORMS, 42(5) (5), 763 - 780, English
    [Refereed]
    Scientific journal

  • SfM-MVS Haar Wavelet Decomposition as a tool to examine mixed grain-size sedimentary Outcrop
    GOMEZ C
    Feb. 2017, HAL Scientific Open Archives, English
    Scientific journal

  • Ground Penetrating Radar Analysis of Slope and Lake Sediments Interplay: A Survey of Lake Pearson
    GOMEZ C, Miller J
    Feb. 2017, HAL Scientific Open Archives, Hal-01524351, English
    [Refereed][Invited]
    Scientific journal

  • Aditya Saputra, Trias Rahardianto, Christopher Gomez
    2017, PROCEEDING OF THE 6TH INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2016, 1857, English
    [Refereed]
    International conference proceedings

  • Trias Rahardianto, Aditya Saputra, Christopher Gomez
    2017, PROCEEDING OF THE 6TH INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2016, 1857, English
    [Refereed]
    International conference proceedings

  • Fault Detection in the Curah Lengkong at Mt Semeru, Indonesia - Topographic and Ground Penetrating Radar Evidences -
    GOMEZ C, LAVIGNE F, SRI HADMOKO D
    2017, Institute of Electronics, Information and Communication Engineers Technical Report, English
    [Refereed][Invited]
    International conference proceedings

  • Aditya Saputra, Trias Rahardianto, Christopher Gomez
    2017, PROCEEDING OF THE 6TH INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2016, 1857(030001) (030001), doi: 10.1063/1.4987060, English
    [Refereed]
    International conference proceedings

  • Spatio-Temporal Distribution of Landslides in Java and the Triggering Factors
    HADMOKO SRI D, LAVIGNE F, SARTOHADI J, GOMEZ C, DARYONO D
    2017, Forum Geografi, English
    [Refereed]
    Scientific journal

  • Seismic vulnerability assessment of residential buildings using logistic regression and geographic information system (GIS) in Pleret Sub District (Yogyakarta, Indonesia)
    SAPUTRA A, RARADIANTO T, REVINDO M.D, DELIKOSTIDIS I, HADMOKO D.S, SARTOHADI J, GOMEZ C
    2017, Geoenvironmental Disasters, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Azusa Yamashita, Christopher Gomez, Kelly Dombroski
    Jan. 2017, GENDER PLACE AND CULTURE, 24(1) (1), 64 - 71, English
    [Refereed][Invited]
    Scientific journal

  • Berton Panjaitan, Christopher Gomez, Eric Pawson
    2017, PROCEEDING OF THE 6TH INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2016, 1857(100002) (100002), doi: 10.1063/1.4987108, English
    [Refereed]
    International conference proceedings

  • Photogrammetry-based Texture Analysis of a Volcaniclastic Outcrop-peel: Low-cost Alternative to TLS and Automation Potentialities using Haar Wavelet and Spatial-Analysis Algorithms
    GOMEZ C, KATAOKA K, SAPUTRA A, WASSMER P, URABE A, MORGENROTH J, KATO A
    2017, Forum Geografi, English
    [Refereed]
    Scientific journal

  • Eroded Coastal Dune and Deposits in North Sumatra (Indonesia) following the 2004 Boxing Day Tsunami - A Geophysical Approach -
    GOMEZ C, LAVIGNE F, WASSMER P
    2017, Institute of Electronics, Information and Communication Engineers Technical Report, English
    [Refereed][Invited]
    International conference proceedings

  • Heather Purdie, Paul Bealing, Emily Tidey, Christopher Gomez, Justin Harrison
    Dec. 2016, GLOBAL AND PLANETARY CHANGE, 147, 1 - 11, English
    [Refereed]
    Scientific journal

  • Daniel M. Blake, Thomas M. Wilson, Christopher Gomez
    Oct. 2016, ENVIRONMENTAL EARTH SCIENCES, 75(20) (20), English
    [Refereed]
    Scientific journal

  • C. Gomez, T. Oguchi, I. S. Evans
    May 2016, Geomorphology, 260, 1 - 3
    [Refereed]
    Scientific journal

  • F. C. Persendt, C. Gomez
    May 2016, GEOMORPHOLOGY, 260, 32 - 50, English
    [Refereed]
    Scientific journal

  • GOMEZ C, PURDIE H
    2016, Geoenvironmental Disaster, 3(23) (23), English
    [Refereed]
    Scientific journal

  • Spatial Analysis in Geomorphology(2): How Spatial Analysis and Large Dataset Have Reshaped Surface Processes and Landform Research
    GOMEZ C, OGUCHI T, EVANS I.S
    2016, Geomorphology, (260) (260), 1 - 6, English
    [Refereed][Invited]
    Scientific journal

  • Geospatial Assessment of Coseismic Landslides in Baturagung Area
    SAPUTRA A, HADMOKO D.S, SARTOHADI J, GOMEZ C
    2016, Forum Geografi, (29) (29), 99 - 113, English
    [Refereed]
    Scientific journal

  • SAPUTRA A, GOMEZ C, HADMOKO S.D, SARTOHADI J
    2016, Geoenvironmental Disaster, English
    [Refereed]
    Scientific journal

  • Heather Purdie, Christopher Gomez, Stephen Espiner
    Dec. 2015, NEW ZEALAND GEOGRAPHER, 71(3) (3), 189 - 202, English
    [Refereed]
    Scientific journal

  • Claire L. Kain, Christopher Gomez, Deirdre E. Hart, Catherine Chague-Goff, James Goff
    Oct. 2015, MARINE GEOLOGY, 368, 1 - 14, English
    [Refereed]
    Scientific journal

  • Changes on a Seismically Active Urban Coast: Observations from Laboratory Christchurch.
    HART D, BYUN D.-S, GIOVINAZZI S, HUGHES M, GOMEZ C
    Sep. 2015, Australasian Coasts and Ports Conference Conference Paper, English
    [Refereed][Invited]
    International conference proceedings

  • C. Gomez, T. Oguchi, I. S. Evans
    Aug. 2015, GEOMORPHOLOGY, 242, 1 - 2, English
    [Refereed][Invited]
    Scientific journal

  • Christopher Gomez, Yuichi Hayakawa, Hiroyuki Obanawa
    Aug. 2015, GEOMORPHOLOGY, 242, 11 - 20, English
    [Refereed][Invited]
    Scientific journal

  • Christopher Gomez, Patrick Wassmer
    Jul. 2015, GEOMORPHOLOGIE-RELIEF PROCESSUS ENVIRONNEMENT, 21(3) (3), 205 - 216, English
    [Refereed]
    Scientific journal

  • Simplified Survey Method Using Small UAV and Single-Point Positioning GNSS Equipped Digital Camera
    小花和宏之, 早川裕弌, 加藤顕, GOMEZ Christopher
    日本地形学連合, Apr. 2015, 地形, 36(2) (2), 87 - 106, Japanese
    [Refereed]

  • Anisha Dayaram, Sharyn Goldstien, Gerardo R. Argueello-Astorga, Peyman Zawar-Reza, Christopher Gomez, Jon S. Harding, Arvind Varsani
    Apr. 2015, INFECTION GENETICS AND EVOLUTION, 31(31) (31), 284 - 295, English
    [Refereed]
    Scientific journal

  • Surveying technique for terrain analysis using small unmanned aircraft and autonomous GNSS equipped and digital camera
    OBANAWA H, HAYAKAWA Y, KATO A, GOMEZ C
    2015, 地形, Japanese
    [Refereed]
    Scientific journal

  • PERSENDT F, GOMEZ C, ZAWAR-REZA P
    2015, JAMBA, 7(1) (1), English
    [Refereed]
    Scientific journal

  • C. Lissak, O. Maquaire, J. -P. Malet, F. Lavigne, C. Virmoux, C. Gomez, R. Davidson
    2015, NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, 15(6) (6), 1399 - 1406, English
    [Refereed]
    Scientific journal

  • WASSMER P, GOMEZ C, ISKANDASIAH T.Y.W.M, LAVIGNE F, SARTOHADI J
    2015, Frontiers in Earth Science: Geomagnetism and Paleomagnetism, English
    [Refereed]
    Scientific journal

  • Jordan Miller, Justin Morgenroth, Christopher Gomez
    2015, URBAN FORESTRY & URBAN GREENING, 14(4) (4), 932 - 940, English
    [Refereed]
    Scientific journal

  • Claire Kain, Christopher Gomez, Patrick Wassmer, Franck Lavigne, Deirdre Hart
    Dec. 2014, NEW ZEALAND GEOGRAPHER, 70(3) (3), 165 - 178, English
    [Refereed]
    Scientific journal

  • Brendan Duffy, Jocelyn Campbell, Michael Finnemore, Christopher Gomez
    Dec. 2014, ENGINEERING GEOLOGY, 183, 216 - 229, English
    [Refereed]
    Scientific journal

  • Risk and Resilience Factors Reported by a New Zealand Tertiary Student Population After the 4th September 2010 Darfield Earthquake
    Beaven, S, Johnston, L, Brogt, E, Blythe, J, Reugg, C, Letham, M, Gomez, C, Seville, E, Ogier, J, Hawker, C, Lyttle, J
    Aug. 2014, International Journal of Mass Emergencies and Disasters, 32(2) (2), 375 - 404, English
    [Refereed]
    Scientific journal

  • Christopher Gomez
    Aug. 2014, NEW ZEALAND GEOGRAPHER, 70(2) (2), 140 - 145, English
    [Refereed]
    Scientific journal

  • Christopher Gomez
    Jun. 2014, JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 280, 1 - 13, English
    [Refereed]
    Scientific journal

  • Claire L. Kain, Christopher Gomez, Deirdre E. Hart, Patrick Wassmer, James Goff, Colette Starheim
    Apr. 2014, MARINE GEOLOGY, 350, 16 - 26, English
    [Refereed]
    Scientific journal

  • Improved nomenclature schemes for Component Fault Trees and State/Event Fault Trees
    K. B. Jamboti, C. Gomez, O. Maeckel, P. Liggesmeyer
    2014, SAFETY, RELIABILITY AND RISK ANALYSIS: BEYOND THE HORIZON, 145 - 151, English
    [Refereed]
    International conference proceedings

  • Modeling of Inaccessible Areas using UAV-based Aerial Photography and Structure from Motion
    OBANAWA H, HAYAKAWA Y, GOMEZ C
    In hardly accessible areas, aerial photogrammetry and laser scanning with manned flight are normally used for topographic measurement. However, those methods are expensive and therefore frequent measurement is practically difficult. To solve such problem, the authors have experimented an aerial photography based SfM (Structure from Motion) technique on a 'peninsular-rock' surrounded on three sides by the sea at a Pacific coast in Chiba Prefecture. The research was carried out using UAS (Unmanned Aerial System) combined with a commercial small UAV (Unmanned Aerial Vehicle) carrying a compact camera. The 3D model has been constructed by digital photogrammetry using a commercial SfM software which can generate sparse and dense point-clouds, from which polygonal models and orthophotographs can be calculated. Using the 'flight-log' and/or GCPs (Ground Control Points), the software can generate digital surface model. As a result, high-resolution aerial orthophotographs and a 3D model were obtained. The results have shown that it was possible to survey the sea cliff and the wave cut-bench, which are unobservable from land side. This system has several merits: firstly lower cost than the existing measuring methods such as manned-flight survey and aerial laser scanning. Secondly, compared to these other methods, the one the authors have presented also enables frequent measurements. Thirdly lightweight and compact system realizes higher applicability to various fields.
    日本地形学連合, 2014, Transaction of the Japanese Geomorphological Union, 35(3) (3), 283 - 294, Japanese
    [Refereed]
    Scientific journal

  • Christopher Gomez, Akira Kato
    2014, 2014 IEEE INTERNATIONAL CONFERENCE ON AEROSPACE ELECTRONICS AND REMOTE SENSING TECHNOLOGY (ICARES), 205 - 209, English
    [Refereed]
    International conference proceedings

  • OBANAWA H, HAYAKAWA Y, SAITO H, GOMEZ C
    2014, Journal of the Japanese Society of Photogrammetry and Remote Sensing, 53(2) (2), 67 - 74, Japanese
    [Refereed]
    Scientific journal

  • The February 21st, 2005 catastrophic waste-avalanche at Leuwigajah dumpsite, Bandung, Indonesia.
    LAVIGNE F, WASSMER P, SURONO, HADMOKO D.S, ISKANDARSYAH Y, GAILLARD J.C, FORT M, TEXIER P, BOUN HENG M, DAVIES T, GOMEZ C
    2014, Geoenvironmental Disaster, (1) (1), 1 - 10, English
    [Refereed]
    Scientific journal

  • Automatic Detection of Damage Zones in Port-au-Prince: the Object-Oriented Approach, an Operational Complement to Visual Interpretation
    THI TANH H.P, APPARICIO P, WEBER C, MATHON D, GOMEZ C
    2014, Journal of Disaster Management, (23) (23), 53 - 66, English
    [Refereed]
    Scientific journal

  • J. Morgenroth, C. Gomez
    2014, URBAN FORESTRY & URBAN GREENING, 13(1) (1), 198 - 203, English
    [Refereed]
    Scientific journal

  • Anisha Dayaram, Sharyn Goldstien, Peyman Zawar-Reza, Christopher Gomez, Jon S. Harding, Arvind Varsani
    May 2013, JOURNAL OF GENERAL VIROLOGY, 94(5) (5), 1104 - 1110, English
    [Refereed]
    Scientific journal

  • Colette C. A. Starheim, Christopher Gomez, Tim Davies, Franck Lavigne, Patrick Wassmer
    Apr. 2013, JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 256, 96 - 104, English
    [Refereed]
    Scientific journal

  • Colette C. A. Starheim, Christopher Gomez, Justin Harrison, Claire Kain, Nicholas J. Brewer, Kirsty Owen, Danang Sri Hadmoko, Heather Purdie, Peyman Zawar-Reza, Ian Owens, Patrick Wassmer, Franck Lavigne
    Apr. 2013, NEW ZEALAND GEOGRAPHER, 69(1) (1), 26 - 38, English
    [Refereed]
    Scientific journal

  • GEOMORPHOLOGY AND SEDIMENTARY STRUCTURES OF UPPER PLEISTOCENE TO HOLOCENE ALLUVIUM WITHIN THE NYABARONGO VALLEY (RWANDA). PALAEO-CLIMATE AND PALAEO-ENVIRONMENTAL IMPLICATIONS
    Patrick Wassmer, Dominique Schwartz, Christopher Gomez, Stephen Ward, Pierre Barrere
    2013, GEOGRAFIA FISICA E DINAMICA QUATERNARIA, 36(1) (1), 199 - 210, English
    [Refereed]
    Scientific journal

  • Akira Kato, Justin Morgenroth, David Kelbe, Christopher Gomez, Jan van Aardt
    2013, 2013 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 2106 - 2109, English
    [Refereed]
    International conference proceedings

  • Field Tree Measurement using Terrestrial Laser for Radar Remote Sensing
    Akira Kato, Manabu Watanabe, Justin Morgenroth, Christopher Gomez
    2013, Proceedings of APSAR2013, TU2.R3.4, English
    International conference proceedings

  • Recent behavior and sustainable future management of the Waiho River, Westland, New Zealand.
    T. DAVIES, B. CAMPBELL, B. HALL, C. GOMEZ
    2013, New Zealand Journal of Hydrology, (52) (52), 41 - 56, English
    [Refereed]
    Scientific journal

  • A. DAYARAM, S. GOLDSTIEN, P. ZAWAR-REZA, C. GOMEZ, J. HARDING, A. VARSANI
    2013, American Society for Microbiology Journal – Genome Announvements, 1(3) (3), English
    [Refereed]
    Scientific journal

  • P. WASSMER, J.-P. SCHWARTZ, C. GOMEZ, P. BARRERE
    2013, Geografica Fysica e dynamic quaternaria, 36(1) (1), 199 - 210, English
    [Refereed]
    Scientific journal

  • Martin Schuster, Christopher Gomez
    2013, GI_FORUM 2013: CREATING THE GISOCIETY, 206 - 215, English
    [Refereed]
    International conference proceedings

  • C. GOMEZ, D. HART
    2013, Geographical Journal, 179(3) (3), 272 - 277, English
    [Refereed]
    Scientific journal

  • Christopher Gomez
    Nov. 2012, ENVIRONMENTAL EARTH SCIENCES, 67(5) (5), 1423 - 1430, English
    [Refereed]
    Scientific journal

  • GOMEZ Christopher
    Nov. 2012, Environ Earth Sci, 67(5) (5), 1423 - 1430, English
    [Refereed]
    Scientific journal

  • Christopher Gomez, Iman Soltanzadeh
    Jun. 2012, EARTH SURFACE PROCESSES AND LANDFORMS, 37(7) (7), 790 - 796, English
    [Refereed]
    Scientific journal

  • Christopher Gomez, Kyoko S. Kataoka, Kenji Tanaka
    Jun. 2012, JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 229, 44 - 49, English
    [Refereed]
    Scientific journal

  • Kataoka Kyoko S., Gomez Christopher
    The Geological Society of Japan, 2012, Annual Meeting of the Geological Society of Japan, 2012, 234 - 234

  • Tohoku Tsunami: Understanding the Human Elements of a Coastal Disaster
    GOMEZ C, HART D, WASSMER P
    2012, Coastal News, 49, 3 - 5, English
    [Refereed]
    Scientific journal

  • Development of the AMS method for unconsolidated sediments. Application to tsunami deposits
    Patrick Wassmer, Christopher Gomez
    Jul. 2011, GEOMORPHOLOGIE-RELIEF PROCESSUS ENVIRONNEMENT, 3(3) (3), 279 - 290, English
    [Refereed]
    Scientific journal

  • N. A. K. Nandasena, Raphael Paris, Norio Tanaka
    Mar. 2011, MARINE GEOLOGY, 281(1-4) (1-4), 70 - 84, English
    [Refereed]
    Scientific journal

  • The Atmospheric Impacts of Large Tsunamis – Case Study in Java, Indonesia
    GOMEZ C, SOLTANZADEH, I, HART D.E
    2011, Coastal News, 48, 5 - 7, English
    Scientific journal

  • A new technique for examining palaeotsunamis arrives on New Zealand shores: the Anisotropy of Magnetic Susceptibility.
    GOMEZ C, HART D
    2011, Coastal News, 47, 7 - 8, English
    Scientific journal

  • C. Gomez, M. Janin, F. Lavigne, R. Gertisser, S. Charbonnier, P. Lahitte, S. R. Hadmoko, M. Fort, P. Wassmer, V. Degroot, H. Murwanto
    Oct. 2010, JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 196(3-4) (3-4), 245 - 264, English
    [Refereed]
    Scientific journal

  • Patrick Wassmer, Jean-Luc Schneider, Anne-V. Fonfrege, Franck Lavigne, Raphaeel Paris, Christopher Gomez
    Sep. 2010, MARINE GEOLOGY, 275(1-4) (1-4), 255 - 272, English
    [Refereed]
    Scientific journal

  • C. Gomez, F. Lavigne
    Jul. 2010, EARTH SURFACE PROCESSES AND LANDFORMS, 35(9) (9), 1116 - 1121, English
    [Refereed]
    Scientific journal

  • C. Gomez, F. Lavigne
    Feb. 2010, JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 190(3-4) (3-4), 379 - 384, English
    [Refereed]
    Scientific journal

  • WASSMER P, SCHNEIDER J.-L, FONFREGE A.-V, LAVIGNE F, PARIS R, GOMEZ C
    2010, Marine Geology, 275(1-4) (1-4), 255 - 272, English
    [Refereed]
    Scientific journal

  • C. Gomez, F. Lavigne, D. S. Hadmoko, N. Lespinasse, P. Wassmer
    Sep. 2009, GEOMORPHOLOGY, 110(3-4) (3-4), 118 - 127, English
    [Refereed]
    Scientific journal

  • Raphael Paris, Patrick Wassmer, Junun Sartohadi, Franck Lavigne, Benjamin Barthomeuf, Emilie Desgages, Delphine Grancher, Philippe Baumert, Franck Vautier, Daniel Brunstein, Christopher Gomez
    Mar. 2009, GEOMORPHOLOGY, 104(1-2) (1-2), 59 - 72, English
    [Refereed]
    Scientific journal

  • Franck Lavigne, Raphael Paris, Delphine Grancher, Patrick Wassmer, Daniel Brunstein, Franck Vautier, Frederic Leone, Francois Flohic, Benjamin De Coster, Taufik Gunawan, Christopher Gomez, Anggri Setiawan, Rino Cahyadi, Fachrizal
    Feb. 2009, PURE AND APPLIED GEOPHYSICS, 166(1-2) (1-2), 259 - 281, English
    [Refereed][Invited]
    Scientific journal

  • C. Gomez, F. Lavigne, N. Lespinasse, D. S. Hadmoko, P. Wassmer
    Oct. 2008, JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 176(4) (4), 439 - 447, English
    [Refereed]
    Scientific journal

  • Reconstruction of Tsunami Inland Propagation on December 26, 2004 in Banda Aceh, Indonesia
    LAVIGNE F, PARIS R, GRANCHER R, WASSMER P, BRUNSTEIN D, VAUTIER F, LEONE F, FLOHIC F, DE COSTER B, GOMEZ C, GUNAWAN, SETIAWAN A, CAHYADI R, FACHRIZAL
    2008, Pure and Applied Geophysics, 165, 1 - 63, English
    [Refereed]
    Scientific journal

  • Field observations of the 17 July 2006 Tsunami in Java
    F. Lavigne, C. Gomez, M. Giffo, P. Wassmer, C. Hoebreck, D. Mardiatno, J. Prioyono, R. Paris
    2007, NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, 7(1) (1), 177 - 183, English
    [Refereed]
    Scientific journal

  • Learning from a major disaster (Banda Aceh, December 26th 2004): A methodology to calibrate simulation codes for tsunami inundation models
    Franck Lavigne, Raphael Paris, Patrick Wassmer, Christopher Gomez, Daniel Brunstein, Delphine Grancher, Franck Vautier, Junun Sartohadi, Anggri Setiawan, Taufik Gunawan Syahnan, Budi Waluyo Fachrizal, Djati Mardiatno, Adi Widagdo, Rino Cahyadi, Nicolas Lespinasse, Laurent Mahieu
    2006, TSUNAMIS, HURRICANES AND NEOTECTONICS: AS DRIVING MECHANISMS IN COASTAL EVOLUTION, 146, 253 - +, English
    [Refereed]
    International conference proceedings

  • JP Le Roux, C Gomez, C Venegas, J Fenner, H Middleton, M Marchant, B Buchbinder, D Frassinetti, C Marquardt, KM Gregory-Wodzicki, A Lavenu
    May 2005, JOURNAL OF SOUTH AMERICAN EARTH SCIENCES, 19(1) (1), 83 - 98, English
    [Refereed]
    Scientific journal

  • C Gomez, C Delacourt, P Allemand, P Ledru, R Wackerle
    2005, PHYSICS AND CHEMISTRY OF THE EARTH, 30(1-3) (1-3), 97 - 108, English
    [Refereed]
    Scientific journal

  • JP Le Roux, C Gomez, J Fenner, H Middleton
    Mar. 2004, SEDIMENTARY GEOLOGY, 165(1-2) (1-2), 67 - 92, English
    [Refereed]
    Scientific journal

  • C Gomez, C Delacourt, P Allemand, P Ledru
    2004, REMOTE SENSING FOR ENVIRONMENTAL MONITORING, GIS APPLICATIONS, AND GEOLOGY III, 5239, 98 - 108, English
    [Refereed]
    International conference proceedings

■ MISC
  • Sustainability of three modified soil conservation methods in agriculture area
    SETIAWAN M.A, SARA H.S, CHRISTANTO N, SARTOHADI J, SAMODRA G, WIDICAHYONO A, WIDIYATI C.N, ASTUTI E.M, MARTHA G.K, MALIK R.F, SAMBODO A.P, ROKHMANINGTYAS R.P, SWASTANTO G.A, GOMEZ ANDRE CHRISTOPHER
    Nov. 2017, ICERM Conference Proceedings (Bali, Indonesia), English
    [Refereed]
    Introduction international proceedings

  • TECHNICAL NOTE: Surge Flow CFD at the Curah Lengkong Valley, Semeru Volcano, Indonesia
    GOMEZ C
    Sep. 2017, Volcanic Risks at Sea Technical Note 001 HAL-01586875, English
    Technical report

  • Earthquake Disturbances
    MARSDEN I, HART, D.E, REID C, GOMEZ C
    Last, 2016, The Encyclopedia of Estuaries, English
    [Refereed][Invited]
    Book review

  • Structure from Motion and Wavelet Decomposition for outcrop analysis.
    GOMEZ C
    2014, Hyper Archives en Ligne, hal-00939994.15pp., English
    Technical report

  • Interactions between Slopes and Lake Sedimentary Processes: Study from Aerial Imagery and Ground Penetrating Radar Survey in the Alps of New Zealand
    MILLER J, GOMEZ C, PURDIE H
    2014, Hyper Archives en Ligne, 45p., English
    Technical report

  • Agriculture Irrigation in the Canterbury Plains – New Zealand: Assessment from Landsat Imagery Remote Sensing
    HARRISON M, GOMEZ C
    2014, Hyper Archives en Ligne, hal-00933711. 50pp, English
    Technical report

  • The Spatial Distribution of Large Woody Debris and Its Relationship with Channel morphology in the Bitterroot River, Montana.
    BERGMEIER M, CLARK M, MARTIN A, SHERIDAN M, GOMEZ C
    2013, Hyper Archives en Ligne, http://hal.archives-ouvertes.f, English
    Technical report

  • 東北地方のカルデラ火山地域における地中レーダ探査
    片岡 香子, ゴメス クリストファー, Gomez Christopher
    新潟大学災害・復興科学研究所, Oct. 2012, 新潟大学災害・復興科学研究所年報, 1, 73 - 74, Japanese

  • C. L. Kain, C. Gomez, A. E. Moghaddam
    Aug. 2012, MARINE GEOLOGY, 319, 75 - 76, English
    Others

■ Books And Other Publications
  • Pointcloud Technology for Geomorphology
    Gomez, C
    Single work, Springer, Oct. 2022

  • Disaster Risk
    Irasema Alcantara Ayala, Christopher Gomez, Ksenia Chmutina, Dewald van Niekerk, Emmanuel Raju, Victor Marchezini, Jake Rom Cadag, J C Galliard
    Joint work, May 2022, 150, English, The text offers a comprehensive and unique perspective on disaster risk associated with natural hazards. It covers a wide range of topics, reflecting the most recent debates but also older and pioneering discussions in the academic field of disaster studies as well as in the policy and practical areas of disaster risk reduction. Disaster Risk offers a uniquely flexible teaching resource through its innovative structure. It emphasises two main reading pathways, the first focuses on the interactions between the human and natural dimensions of disasters and constitutes the conventional and linear structure of the book, which includes five main sections including the nature and impact of disasters; people’s vulnerabilities and capacities; natural hazards; people’s response to and resilience after disasters; and disaster risk reduction and management. The second pathway cuts across the previous sections and addresses transversal issues. These streams look at such as natural hazards, vulnerability and capacities as well as cross-cutting issues such as gender, age and health. An associated website provides links to additional material and teaching and learning activities. The four authors have extensive experience in the field of disaster studies and provide a wide range of expertise covering both the social and physical dimensions of disasters. In addition, they have a large experience as practitioners of disaster risk reduction and management and have extensively dealt with policy makers over the past two decades. This book will be of particular interest to undergraduate students studying geography and environmental studies/science. It will also be of relevant to students/professionals from a wide range of social and physical science disciplines, including public health and public policy, sociology, anthropology, political science and geology., ISBN: 9781315469614
    [Refereed]
    Scholarly book
    DOI

  • Structure from Motion for Outcrop Study
    SAPUTRA A, GOMEZ ANDRE CHRISTOPHER
    Single work, Earth Crust (InterTech Open Pub. London), Dec. 2018, English
    Scholarly book

  • Geotourism risk Management
    PURDIE H, GOMEZ CHRISTOPHER ANDRE, ESPINER S
    Others, Handbook of Geotourism, Dec. 2017, English
    Textbook

  • Ethics and Disaster Risk Reduction including Climate Change adaptation
    GOMEZ CHRISTOPHER ANDRE
    Others, The Routledge Handbook of Disaster Risk Reduction Including Climate Change Adaptation, 2017, English
    Textbook

  • The Environmental Framework of the Si Pamutung Archaeological Site
    LAVIGNE F, LESPINASSE N, GOMEZ CHRISTOPHER ANDRE
    Others, D. Perret and H. Surachman (Ed.), The Settlement of Si Pamutung in Padang Lawas, North Sumatra (9th-13th centuries CE), 2012, English
    Textbook

  • PR Investigation of the Si Pamutung Site, Central Sumatra, Indonesia
    LAVIGNE F, LESPINASSE N, GOMEZ CHRISTOPHER ANDRE
    Others, D. Perret and H. Surachman (Ed.), The Settlement of Si Pamutung in Padang Lawas, North Sumatra (9th-13th centuries CE), 2012, English
    Textbook

  • L'apport du Radar Geologique pour l'etude des impacts geomorphologiques du tsunami du 26 Decembre 2004
    GOMEZ ANDRE CHRISTOPHER, LAVIGNE F, LESPINASSE N
    Joint work, Le Tsunami du 26 Decembre 2004, Publications de la Sorbonne, Paris., 2010, French
    Scholarly book

  • 2004 tsunami deposits’ erosion revealed by GPR survey (Banda Aceh – Indonesia)
    GOMEZ ANDRE CHRISTOPHER, LESPINASSE N, LAVIGNE F, SAINTENOY A
    Single work, TSUNARISQUE, Paris 1 Sorbonne University Press, 2006, French
    Scholarly book

■ Lectures, oral presentations, etc.
  • 雲仙岳炭酸谷における細粒土砂で覆われた面積の経年変化
    Shinohara, Y., Hotta, N., Tsunetaka, H., Gomez, C.
    砂防学会大会, May 2023, Japanese
    Oral presentation

  • 気候変動の退氷に関する扇状地土砂移動と災害(ニュージランド、南島)
    Gomez Christopher
    砂防学会大会, May 2023, Japanese
    Oral presentation

  • 土石流における流木による到達距離と侵食の影響とその挙動について
    Kataoka Mikito, Ashikaga Kensuke, Gomez Christopher
    砂防学会大会, May 2023, Japanese
    Poster presentation

  • Sediments sources typology and mapping based on remote sensed data analysis
    Siccard, V, Lissak, C, Gomez, C, Cossart, E
    Japanese Geophysical Union Meeting, May 2022

  • Forensic geohazard profiling of the pyroclastic density current hit Onokoba Elementary School site (Unzen Volcano, Japan)
    Balazs, B, Gomez, C.A, Shinohara, Y, Hotta, N
    Japanese Geophysical Union Meeting, May 2022

  • Toward the identification of potential planetary-scale tidal-cryotectonic cycles on Europa
    Balazs, B, Kereszturi, A, Gomez, C
    Japanese Geophysical Union Meeting, May 2022

  • Structure-from-Motion Photogrammetry as a Low-Cost 3D Pointcloud Solution for Law Enforcement
    Gomez, C, Balazs, B
    Japanese Geophysical Union Meeting, May 2022
    Poster presentation

  • Analysis of Rainfall-induced Landslide-dams Geomechanics
    Daikai R, Gomez, C
    2022 Sabo Conference, May 2022, Japanese
    Poster presentation

  • UAV- SfM-MVS, Low-cost SLAM, and GPR Shallow Geophysics to monitor the Anthropogenic Evolution post-tsunami of the Sendai Shore
    Gomez, C, Bradak, B
    Japanese Geophysical Union Meeting, May 2022, English, JPGU_Sendai.pdf, No password
    Oral presentation
    添付ファイルのURL

  • Footprint in the Sand: Crowd-sourcing soil Mechanics & Applications in Erosion Measurement
    Gomez, C, Bradak, B, Hayakawa, Y
    Japanese Geophysical Union Meeting, May 2022, English, JPGU_Unzen.pdf, No password
    Oral presentation
    添付ファイルのURL

  • Power Relations, disasters and Tertiary Education - Inequalities, inequities, individuals and institutions through earthquakes and the Covid19 crisis
    C. Gomez
    Namibia International Tertiary Education Conference, Nov. 2021, English, NamibiaUniv_Presentation.pdf, Others, presentation, Password protected
    [Invited]
    Keynote oral presentation
    添付ファイルのURL

  • Point-cloud Technologies for Landslide Hazards and Disaster Risks
    C. Gomez
    World Landslide Form 5, Nov. 2021, English
    [Invited]
    Invited oral presentation

  • Debris flows and wood debris hazards in Japanese Mountains under climate change
    C. Gomez
    ICERM International Conference, Nov. 2021, English
    [Invited]
    Invited oral presentation

  • Development of tsunami fragility curve using remote sensing and multi-scale CFD simulation
    Nakamura, S, Gomez, C
    IAMU Annual Conference, Oct. 2021, English
    Oral presentation

  • The Need to Develop Compression and Decompression Data for Geomorphologists to Improve Sediment Volume Estimates from High-Resolution Topographic Data
    Christopher Gomez
    European Geophysical Union, Apr. 2021
    [Invited]
    Oral presentation

  • The kingdom of Tonga devastated by a megatsunami in the mid-15th century
    Franck Lavigne, Julie Morin, Patrick Wassmer, Olivier Weller, Taaniela Kula, Ana V. Maea, Karim Kelfoun, Fatima Mokadem, Raphael Paris, Mukhamad Ngainul Malawani, Mhammed Benbakkar, Ségolène Saulnier-Copard, Céline M. Vidal, Tu’I’ahai Tu’I’afitu, Fuka Kitekei’aho, Christopher Gomez
    English
    Oral presentation

  • Differential rock fragmentation in the Ohya-Kuzure debris-flow: Inferences from UAV-based remote-sensing and uniaxial compression strength.
    Gomez, C, Imaizumi, F, Hotta, N, Tsunetaka, H, Hayakawa, Y
    American Geophysical Union, Dec. 2020, English
    Oral presentation

  • Ground Penetrating Radar Imaging of Pro-glacial Landforms in the Upper Waimakariri River (New Zealand)
    Christopher GOMEZ, Heather PURDIE, Justin HARRISON, Paul BEALING, Nicholas KEY
    Japanese Geophysical Union and American Geophysical Union Joint Meeting, Jul. 2020

  • A new method to measure in situ soil density using SfM-MVS photogrammetry
    Christopher GOMEZ
    Japanese Geophysical Union and American Geophysical Union Joint Meeting, Jul. 2020, English

  • In-flow Sediment Fragmentation of Debris-flow Material - Rolling Tumbler Experiments with Stratovolcanic Dacite -
    GOMEZ ANDRE CHRISTOPHER, Hotta, N, Shinohara, Y, Tsunetaka, H
    9th International Workshop on Multimodal Sediment Disasters, Oct. 2019, English, International conference
    Oral presentation

  • GPR Imaging of Moisture and Water Movement in Volcanic Soil
    GOMEZ ANDRE CHRISTOPHER
    Japanese Geophysical Union Meeting 2019, Jun. 2019, English, International conference
    Oral presentation

  • Application of the self-potential method for evaluating subsurface structure of potential sites for deep-seated landslides
    YAMAKAWA, Y, GOMEZ ANDRE CHRISTOPHER, MASAOKA, N, KOSUGI, K
    130回日本森林学会大会, May 2019, Japanese, Domestic conference
    Oral presentation

  • Grain-size Distribution Change at Unzen Volcano and Impact on Lahar Triggering and Flowage
    GOMEZ ANDRE CHRISTOPHER, Hotta, N, Shinohara, Y, Tsunetaka, H
    2019 Annual Sabou Gakkai, May 2019, English, International conference
    Oral presentation

  • Drifted Wood Distribution in Asakura (Kyushi) following the 2017 rain-triggered Debfirs-Flows and Landslides
    Lissak, C, GOMEZ ANDRE CHRISTOPHER, Shimizu, M, Hotta, N, Davidson, R, Uchida, T
    European Geophysical Union (Vienna), May 2019, English, International conference
    Oral presentation

  • Climate Change and Population Depletion Control over Sediment Hazard and Drifted Wood Hazards in Japan
    Shimizu, M, GOMEZ ANDRE CHRISTOPHER, Uchida, T
    Sabou Gakkai Annual Conference 2019, May 2019, Japanese, International conference
    Poster presentation

  • 3d Surface Roughness Analysis of Tree Barks as a Proxy of Potential Radioactive Material Absorption
    Matsui, H, GOMEZ ANDRE CHRISTOPHER
    CRIED Annual Symposium 2019, Mar. 2019, Japanese, International conference
    Poster presentation

  • Understanding Numazawa Breakout Flood for Disaster Management - Ground Penetrating Radar Perspectives
    GOMEZ ANDRE CHRISTOPHER, Kataoka, K
    Niigata University, Institute for Natural Hazards and Disaster Recovery Conference, Feb. 2019, Japanese, Domestic conference
    Oral presentation

  • Open Seminar: Ground Penetrating Radar for Bio- Sedimentological Hazards and Disaster Risk Assessment from examples in Indonesia and in Japan: an Essential Complement to Geodetic Analysis
    GOMEZ ANDRE CHRISTOPHER
    Ecosystem Ecology Seminar at Hyogo University, Sep. 2018, English, Domestic conference
    Invited oral presentation

  • The Asakura Sediment and Tree Disaster: Drifted Wood Distribution and Flow Dynamics from UAV and aircraft Remote Sensing
    GOMEZ ANDRE CHRISTOPHER
    Tsukuba Ministry of Land, Infrastructure and Transport - SABO divison, Jun. 2018, Japanese, Domestic conference
    Public discourse

  • Stem flow and water distribution around trees from SfM-based Micromorphometry
    GOMEZ ANDRE CHRISTOPHER
    CRIED 2018 Collaborative Research Symposium, Jun. 2018, English, International conference
    Oral presentation

  • Earthquake and Stormwater lifelines: a method for revealing multi-hazard interactions to improve engineering resilience
    HART D, GOMEZ ANDRE CHRISTOPHER, GIOVINAZZI S, DAVIES C
    16th European Conference on Earthquake Engineering (16ECEZ), Jun. 2018, English, Thessaloniki, Greece, International conference
    Oral presentation

  • Valley Morphological Control of Drifted Wood and Debris - the 2017 mass-movements and floods in Kyushu
    GOMEZ ANDRE CHRISTOPHER, HOTTA N, SHINOHARA Y, TSUNETAKA H
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Oral presentation

  • The role of DEM resolution on ballistic distribution using the BALLISTA model at Merapi Volcano
    GOMEZ ANDRE CHRISTOPHER, TSUNEMATSU, K
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Oral presentation

  • Statistical Analysis of the Distribution of Ballistic Deposits using BALLISTA Model
    TSUNEMATSU K, KENNEDY B.M, GOMEZ ANDRE CHRISTOPHER, FITZGERALD R, CHOPARD B
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Oral presentation

  • Shallow Landslides & Drifted Wood Hazards following the July 2017 Rainfall Event in Kyushu
    GOMEZ ANDRE CHRISTOPHER, HOTTA N, SHINOHARA Y, TSUNETAKA H, LISSAK C, SHIMIZU M
    5th International Symposium on Mega Earthquake induced Geo-disasters, May 2018, English, International conference
    Oral presentation

  • Seismic vulnerability assessment of residential buildings using probabilistic model of logistic regression and geographic information system (GIS) in Pleret Sub District, southeast part of the Yogyakarta City.
    SAPUTRA A, RAHARDIANTO T, REVINDO M.D, DELIKOSTIDIS I, GOMEZ ANDRE CHRISTOPHER
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Poster presentation

  • Moving Japan Scientific Scene into the 21st Century: the need of Ecofeminism for Emerging Diversity and Minorities
    GOMEZ ANDRE CHRISTOPHER
    Japan Geoscience Union Meeting 2018 - Invited Talk, May 2018, English, International conference
    Keynote oral presentation

  • Liquefaction at the Kobe University Campus during the Awaji-Hanshin Earthquake – Evidence from Ground Penetrating Radar
    SAKAMOTO M, SHIMIZU M, IMAI K, MATSUI H, GOMEZ C
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Poster presentation

  • Implementation of Selection Criteria to Improve Landslide Susceptibility Model of Kashiwazaki-Kariwa, Japan: a Frequency Ratio Approach
    RAHARDIANTO T, GOMEZ ANDRE CHRISTOPHER, WILSON M
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Poster presentation

  • Glacier Recession Uncorks Sediment Transfer at Fox Glacier (NZ)
    GOMEZ ANDRE CHRISTOPHER, PURDIE H
    5th International Symposium on Mega Earthquake induced Geo-disasters, May 2018, English, International conference
    Oral presentation

  • Dome Evolution at Unzen Volcano between 2003 and 2015
    GOMEZ ANDRE CHRISTOPHER, HOTTA N, SHINOHARA Y
    5th International Symposium on Mega Earthquake induced Geo-disasters, May 2018, English, International conference
    Oral presentation

  • Differentiating Transport Mechanism of Pumices in Hyperconcentrated-flows from Numazawa Volcano – Japan
    GOMEZ ANDRE CHRISTOPHER, KATAOKA K
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Oral presentation

  • Determining earthquake susceptible areas Southeast of Yogyakarta, Indonesia – Outcrop analysis from structure from motion (SfM) and geographic information system (GIS)
    SAPUTRA, A, DELIKOSTIDIS I, HADMOKO SRI D, SARTOHADI J, ZAWAR-REZA P, GOMEZ ANDRE CHRISTOPHER
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Poster presentation

  • Ballistic Hazards Simulation at Merapi Volcano – Indonesia – using BALLISTA
    GOMEZ ANDRE CHRISTOPHER, TSUNEMATSU, K, DJATI, SETIAWAN A, SARTOHADI J, SRI HADMOKO D
    Japan Geoscience Union Meeting 2018 (Makuharimesse, Japan), May 2018, English, International conference
    Oral presentation

  • The Spatio-temporal control of pumice vesicularity on lahar disaster risks
    GOMEZ ANDRE CHRISTOPHER
    平成29年度 新潟大学災害・復興科学研究所共同研究成果報告会, Mar. 2018, English, International conference
    Oral presentation

  • Pumiceous Ignimbrite Material Affects on Giant Lahar Rheology from Numazawa Volcano, Japan
    GOMEZ ANDRE CHRISTOPHER, KATAOKA K
    2018 Symposium of the Research Institute for Natural Hazards and Disaster Recovery, Mar. 2018, English, Domestic conference
    Oral presentation

  • Deciphering Tsunami & Paleo-tsunami Waves Energy and Orientation at the Coast using Anisotropy of Magnetic Susceptibility: Research in Japan, Indonesia and New Zealand
    GOMEZ ANDRE CHRISTOPHER
    (Invited Lecture) 海事防災研究会, Mar. 2018, English, Domestic conference
    Invited oral presentation

  • High -Resolution and -Frequency Topographic Data: Opportunities and Limitations to Solve 21st Century Challenges in Rural Japan
    GOMEZ ANDRE CHRISTOPHER
    2017年12月13日水曜日 第9回GIS-Landslide研究集会および第5回高解像度地形情報シンポジウム, Feb. 2018, English, Domestic conference
    Invited oral presentation

  • Assessing ballistic hazard using a UAV: Yasur Volcano, Vanuatu
    FITZGERALD R, KENNEDY B, GOMEZ ANDRE CHRISTOPHER, WILSON T, LEONARD G, JOLLY A, MATOZA R, FEE D, AUSTIN A, IEZZI A, SIMONS B, KILGOUR G
    Cities on Volcanoes 2018 S1.5 Geomatics and volcanic areas monitoring, 2018, English, International conference
    Oral presentation

  • TUTORIAL: Drone-based Photogrammetry - from Data Collection to Data Processing
    GOMEZ ANDRE CHRISTOPHER
    Universitas Muhammadyah Surakarta, Oct. 2017, International conference
    Public discourse

  • Structure from Motion and Multiple View Stereophotogrammetry - methodology and novel approaches for Indonesia
    GOMEZ ANDRE CHRISTOPHER
    Seminar at Pak Angry Laboratory of Geomorphology, Universitas Gadjah Madah, Oct. 2017, English, International conference
    Public discourse

  • Mahasiswa UMS Dapat Transfer Ilmu Kebencanaan dari Dosen Jepang
    GOMEZ ANDRE CHRISTOPHER
    Suara Merdeka （インドネシア）, Oct. 2017, International conference
    Media report

  • Living on the Edge: The Role of Geosciences in Rising Indonesia and Climate Change Challenges - Methods and Tools to Solve Present and Future Issues in Indonesia and East Asia -
    GOMEZ ANDRE CHRISTOPHER
    Public Speech - Universitas Muhammadyah Surakarta, Oct. 2017, International conference
    Invited oral presentation

  • Insights from the Editor: Writing and Being Published in Academia
    GOMEZ ANDRE CHRISTOPHER
    Universitas Muhammadyah Surakarta - Invited Lecture to Faculties, Oct. 2017, English, International conference
    Invited oral presentation

  • How to Write Scientific Publications in English - a Method to Publish Successfully
    GOMEZ ANDRE CHRISTOPHER
    Universitas Gadja Madah - Open Presentation, Oct. 2017, English, International conference
    Public discourse

  • Professor from Japan invited at UMS Geography - Providing Exchange Opportunities for Students
    GOMEZ ANDRE CHRISTOPHER
    Jawa Pos (インドネシア）, Oct. 2017, International conference
    Media report

  • Ethics in Disaster Risk Management
    GOMEZ ANDRE CHRISTOPHER
    Universitas Gadja Madah - Disaster Risk Management Course, Oct. 2017, English, International conference
    Public discourse

  • 21st Century Challenges in East-Asia, between population transition and climate change, what role for geosciences
    GOMEZ ANDRE CHRISTOPHER
    Invited Public Speech at UGM (Yogyakarta, Indonesia), Oct. 2017, English, International conference
    Invited oral presentation

  • Acoustic Source Waveform Simulation and Inversion at Yasur Volcano, Vanuatu
    IEZZI, A.M, FEE D, KIM K, MATOZA R.S, AUSTIN A, JOLLY A, CHRISTENSON B, JOHNSON R, GARAEBITI E, KENNEDY B, FITZGERALD R, KEY N, TESSIER A, GOMEZ ANDRE CHRISTOPHER
    IAVCEI 2017, Portland, USA, Aug. 2017, English, International conference
    Oral presentation

  • Multihazards in the 21st Century: Why Sciences is in serious need of Leadership and Why Geosciences Education and Research is Primordial
    GOMEZ ANDRE CHRISTOPHER
    Niigata University - Geology Dept. Invited Seminar, Jun. 2017, English, Domestic conference
    Oral presentation

  • Measuring the Earth to Meet 21st Century Challenges: Natural Hazards and Disaster Risks on a Changing Planets with a Changing Population
    GOMEZ ANDRE CHRISTOPHER
    Fuji Architecture Ltd., Jun. 2017, Japanese, Domestic conference
    Oral presentation

  • Guest Seminar: 21st Century Challenges in geosciences
    GOMEZ ANDRE CHRISTOPHER
    千葉大学, May 2017, Japanese, Domestic conference
    Public discourse

  • CFD Modelling of the Local Effects of Caldera Crater Walls and Wind-field Variations on Trapping Potential Harmful Volcanic Gases
    GOMEZ ANDRE CHRISTOPHER
    Japanese Geophysical Union & American Geophysical Union, May 2017, English, International conference
    Poster presentation

  • The application of structure from motion (SfM) to identify the geological structure and outcrop studies
    SAPUTRA A, RAHARDIANTO T, GOMEZ ANDRE CHRISTOPHER
    AIP Conference 2017, Bandung, Indonesia, 2017, English, International conference
    Oral presentation

  • Rockfall Simulation from DSM Data generated by SfM from UAV-based imagery: Analysing the rockfall hazards in the touristic Fox Valley
    HATA H, GOMEZ ANDRE CHRISTOPHER, PURDIE H, TIBBOTTS S, NARAMA C
    Japanese Geophysical Union & American Geophysical Union, 2017, English, Domestic conference
    Poster presentation

  • Potential coping capacities to avoid tsunamis in Mentawai
    PANJAITAN B, GOMEZ ANDRE CHRISTOPHER, PAWSON E
    AIP Conference 2017, Bandung, Indonesia, 2017, English, International conference
    Oral presentation

  • Open Source 3D Multiparticle Ballistic Simulator "Ballista"
    TSUNEMATSU K, FITZGERALD R, KENNEDY B, GOMEZ ANDRE CHRISTOPHER, FALCONE J.-L, CHOPARD B
    IAVCEI 14-18 August 2017 Portland, USA, 2017, English, International conference
    Oral presentation

  • Living on a Donuts - Coastal and Sea Hazards in the age of Climate Change and the Anthropocene
    GOMEZ ANDRE CHRISTOPHER
    15th International Symposium on Geo-disaster Reduction (Invited Speech), 2017, English, International conference
    Oral presentation

  • Finite Volume Method Modelling of Volcanic Ballistic Impacts on Soft Ash and on Buildings - a Hazards Approach
    GOMEZ ANDRE CHRISTOPHER, TSUNEMATSU K
    Japanese Geophysical Union & American Geophysical Union, 2017, English, Domestic conference
    Poster presentation

  • Features of Numerical Model “Ballista”; the Ballistic Simulator of Explosive Volcanic Eruption
    TSUNEMATSU K, GOMEZ ANDRE CHRISTOPHER, FITZGERALD R, KENNEDY B, YAMAOKA K
    Japanese Geophysical Union & American Geophysical Union, 2017, English, Domestic conference
    Oral presentation

  • Fault Mapping at the Confluence of the Aga River and the Tadami River - Japan - using Ground Penetrating Radar
    GOMEZ ANDRE CHRISTOPHER, KATAOKA K
    Institute of Electronics, Information and Communication Engineers (IEICE), Japan - Workshop on GPR Measurements of Active Faults and Tsunami Sediments (French Embassy, Tokyo), 2017, English, Domestic conference
    Oral presentation

  • Eroded Coastal Dune and Deposits in North Sumatra (Indonesia) following the 2004 Boxing Day Tsunami - a Geophysical Approach
    GOMEZ ANDRE CHRISTOPHER
    Institute of Electronics, Information and Communication Engineers (IEICE), Japan - Workshop on GPR Measurements of Active Faults and Tsunami Sediments (French Embassy, Tokyo), 2017, English, Domestic conference
    Oral presentation

  • Development of a New Method for Rockfall Analysis using Schmidt Hammer
    HATA H, GOMEZ ANDRE CHRISTOPHER, NARAMA C
    Japanese Geophysical Union & American Geophysical Union, 2017, English, Domestic conference
    Poster presentation

  • 3D acoustic waveform simulation and inversion supplemented by infrasround sensors on a tethered weather balloon at Yasur Volcano, Vanuatu
    IEZZI A.M, FEE D, MATOZA R.S, JOLLY A.D, KIM K, CHRISTENSON B, JOHNSON R, KILGOUR G, GARAEBITI E, AUSTIN A, KENNEDY B, FITZGERALD R, GOMEZ ANDRE CHRISTOPHER, KEY N
    AGU (American Geophysical Union) Fall Meeting 2017, 2017, English, International conference
    Oral presentation

  • Integrating Multiple Scales and Pluridisciplinary Geomatics to meet the Challenges of the 21st Century.
    GOMEZ ANDRE CHRISTOPHER
    American Geophysical Union - Japanese Geophysical Union Joint Meeting (Keynote Speech), 2016, English, International conference
    [Invited]
    Invited oral presentation

  • Simulating the role of climate change on coastal streams hydrology and sediment dynamics in Christchurch
    GOMEZ ANDRE CHRISTOPHER, HART D, GIOVINAZZI S
    AGU Fall Meeting 2015, Dec. 2015, English, International conference
    Oral presentation

  • Individual and Household Tsunami Preparedness Measures in Mentawai, West Sumatra, Indonesia
    PANJAITAN B, GOMEZ ANDRE CHRISTOPHER, PAWSON E
    New Zealand Asian Studies Society International Conference, Dec. 2015, English, Christchurch, New Zealand, International conference
    Oral presentation

  • Validation of Daily Operational Satellite-based rainfall products over data-sparse Cuvelai Basin (Namibia) using the flood events 2009-2011
    PERSENDT F, GOMEZ ANDRE CHRISTOPHER, ZAWAR-REZA P
    WATERWAYS Conference 2015, Lincoln University, New Zealand, Oct. 2015, English, International conference
    Oral presentation

  • The Anthropocene: observations and expectations for coastal evolution and sedimentary records.
    GOMEZ C
    Geological Society of America 2015, Baltimore, Maryland, USA, Oct. 2015, English, International conference
    Oral presentation

  • Post-disaster research: ethical challenges and opportunities
    GAILLARD J.-C, GOMEZ ANDRE CHRISTOPHER
    11th Association of Pacific Rim Universities Research Symposium and Multi-Hazards around the Pacific Rim, Manila, The Philippines, Oct. 2015, English, International conference
    Oral presentation

  • Modelling the effects of the Christchurch coastal-earthquake on coastal streams using 3D shallow-water equations
    GOMEZ ANDRE CHRISTOPHER, HART D, GIOVINAZZI S
    Geological Society of America 2015, Baltimore, Maryland, USA, Oct. 2015, English, International conference
    Oral presentation

  • Rockfall at Fox Glacier, New Zealand: a Hazard Analysis using Structure from Motion and Spatial Modelling.
    ROY E.S, PURDIE H, GOMEZ ANDRE CHRISTOPHER, WASSMER P, SCHUSTER M
    ICGdR 14th International Symposium on Geo-disasters, Aug. 2015, English, International conference
    Oral presentation

  • Preliminary Report of the AMS Analysis of the Tsunami Deposit in Tohoku – Japan
    WASSMER P, GOMEZ ANDRE CHRISTOPHER, HART D.E, HIRAISHI T, AZUMA R, KOENIG B, TRAUTMAN M
    ICGdR 14th International Symposium on Geo-disasters, Aug. 2015, English, International conference
    Oral presentation

  • Unmanned Autonomous Vehicles for mapping complex evolving events: applications in quantitative earth surface processes and disaster prevention.
    GOMEZ ANDRE CHRISTOPHER
    Helsinki University - College of Sciences Invited Speech, 2015, English, International conference
    Oral presentation

  • The 2011 Earthquake in Christchurch: Remote Sensing and GIS Analysis of a Multiscale problem
    GOMEZ ANDRE CHRISTOPHER
    Kyoto University DPRI (21 Dec. 2015), 2015, English, Domestic conference
    Public symposium

  • Structure from Motion Point Cloud: a Rapid and Low-Cost Alternative to Laser Technologies.
    GOMEZ ANDRE CHRISTOPHER
    Helsinki University - Geocomputing Group (Invited talk), 2015, English, International conference
    Oral presentation

  • Solving Multihazards Problems in the City with Geospatial Technologies, in the light of Climate change Issues
    GOMEZ ANDRE CHRISTOPHER
    Tokyo University CSIS Invited Seminar, 2015, English, Domestic conference
    Oral presentation

  • Environmental change, geo-hazards and disasters in coastal cities: the new challenges.
    GOMEZ ANDRE CHRISTOPHER
    Universitas Gadja Madah (invited talk), Dec. 2014, English, International conference
    Oral presentation

  • Structure from Motion for pointclouds creation from historicql imagery and UAV: Monitoring floodplain vegetation evolution in 3D
    GOMEZ ANDRE CHRISTOPHER, OBANAWA H, KATO A, HAYAKAWA Y, SAITO H
    5th Digital Earth Summit, Nov. 2014, English, Nagoya, Japan, International conference
    Oral presentation

  • Publishing International Scientific Papers in the field of geosciences: understanding the steps, mechanisms and pitfalls.
    GOMEZ ANDRE CHRISTOPHER
    Professional workshop at Universitas Gadja Madah, Nov. 2014, English, International conference
    Oral presentation

  • Glacier and Slope Formation Monitoring in New Zealand using UAV based imagery
    GOMEZ ANDRE CHRISTOPHER, PURDIE H
    5th Digital Earth Summit, Nov. 2014, English, Nagoya, Japan, International conference
    Oral presentation

  • Identifying flood disaster events using precipitation extreme indices over Northern Namibia
    PERSENDT F, ZAWAR-REZA P, GOMEZ ANDRE CHRISTOPHER
    Drivers, Scales and Context of Disaster Risk in the SADC Region,, Oct. 2014, English, Windhoek, Namibia, International conference
    Oral presentation

  • Glacier retreat. Feedbacks and implications for glacier tourism
    PURDIE H, GOMEZ ANDRE CHRISTOPHER, STEWART E, WILSON J, ESPINER S, BEALING P, KEY N
    IAG-NZGS Conference, Jun. 2014, English, Melbourne Australia, International conference
    Oral presentation

  • Coseismic Landslide Hazard Assessment using Geographic Information System
    SAPUTRA A, GOMEZ ANDRE CHRISTOPHER, HADMOKO D.S, SARTOHADI J
    Solo Indonesia, International Seminary on Geographic Information Systems, Jun. 2014, English, International conference
    Oral presentation

  • 3D Modelling of Inaccessible Areas using UAV-based Aerial Photography and Structure from Motion.
    OBANAWA H, HAYAKAWA Y, GOMEZ ANDRE CHRISTOPHER
    European Geophysical Union 2014, Apr. 2014, English, International conference
    Oral presentation

  • The Physical and Social Implications of Rapid Glacier Retreat: A case Study from Fox and Franz Joseph Glaciers, South Westland, New Zealand.
    PURDIE H, WILSON J, GOMEZ ANDRE CHRISTOPHER, STEWART E, ESPINER S
    SIRG international Conference, 2014, English, International conference
    Oral presentation

  • Remote Sensing from Space to the Ground for Environmental Monitoring.
    GOMEZ ANDRE CHRISTOPHER
    Universitas Muhammadyah Surakarta, 2014, English, International conference
    Oral presentation

  • Key-note Speech: High Resolution, High Frequency UAV-based remote sensing in Ecology, Environment and Earth Sciences: Development and data geoprocessing
    GOMEZ ANDRE CHRISTOPHER
    IEEE International Conference on Aerospace Electronics and Remote Sensing Technology (ICARES), 2014, English, International conference
    Oral presentation

  • Hazards, Risks and Disaster Mitigation in East Asia: the challenges around the corner.
    GOMEZ ANDRE CHRISTOPHER
    Hyogo University, 2014, English, Domestic conference
    Public discourse

  • Geology, Environment and Remote Sensing for Disaster Management.
    GOMEZ ANDRE CHRISTOPHER
    1st LAPAN International Conference (Keynote Speech), 2014, English, International conference
    Oral presentation

  • Assessing topographic control on sediment deposition patterns in coastal deposits
    KAIN C.L, GOMEZ ANDRE CHRISTOPHER, HART D.E, WASSMER P, GOFF J
    Earth Sciences Convention, 2014, English, New-Castle, Australia, International conference
    Oral presentation

  • 多摩川氾濫原における土地被服の変遷と地震の揺れの関係
    GOMEZ ANDRE CHRISTOPHER
    Tokyo University CSIS Days 2013, Dec. 2013, Japanese, Domestic conference
    Oral presentation

  • 地球表層かていに関わる新技術のしんぽと限界
    GOMEZ ANDRE CHRISTOPHER
    University of Niigata, Geology, Invited Lecture, Nov. 2013, English, Domestic conference
    Oral presentation

  • Clore-range remote sensing and GIS data processing: Progresses in Earth-Sciences and Potentialities in Forestry
    GOMEZ ANDRE CHRISTOPHER
    Hokkaido University, Guest Lecture, Oct. 2013, English, Domestic conference
    Oral presentation

  • Ground Penetrating Radar (GPR) Survey on Volcanogenic Outburst Flood Deposits, Northeastern Japan.
    Kataoka, K.S, GOMEZ ANDRE CHRISTOPHER
    Kagoshima, japan: IAVCEI 2013 – Forecasting Volcanic Activity, Jul. 2013, Japanese, International conference
    Oral presentation

  • Keynote Speech: Low-cost Remote Sensing and Crowd Sourced Data for Mass Movement, Hazards and Disasters in New Zealand
    GOMEZ ANDRE CHRISTOPHER
    Niigata, Japan: Disaster Prevention and Mitigation Symposium, April 20th 2013, Apr. 2013, English, International conference
    Oral presentation

  • Very Large 3D Dataset: Acquisition and GIS Processing
    GOMEZ ANDRE CHRISTOPHER
    Chiba University Faculty of Horticulture, 2013, English, Domestic conference
    Public discourse

  • Three dimensional reconstruction of paleotopography to assess the role of antecedent morphology before and after rapid deposition events.
    Kain, C, GOMEZ ANDRE CHRISTOPHER, Hart, D
    IAG, Paris, FRANCE, 2013, English, International conference
    Oral presentation

  • The influence of river configuration on inundation during high-energy coastal events
    Kain, C, GOMEZ ANDRE CHRISTOPHER, Hart, D
    IAG Australia, 2013, English, Perth, Australia, International conference
    Oral presentation

  • The Competent Professional Emergency Manager.
    Hurte, W, O'Steen B, GOMEZ ANDRE CHRISTOPHER
    Australian and New Zealand Disaster and Emergency Management Conference, 2013, English, International conference
    Oral presentation

  • SfM vs. RTK: Fight! (Structure from Motion versus Global Navigation Satellite System Real Time Kinetic
    GOMEZ ANDRE CHRISTOPHER, Starheim, C
    IAG, Paris FRANCE, 2013, English, International conference
    Oral presentation

  • Pyroclastic flow reworking and lahar triggering in the Kali Putih: Laboratory simulations and fieldwork observations
    Wassmer P, GOMEZ ANDRE CHRISTOPHER, Starheim C
    SEDIMER Workshop, 2013, English, Yogyakarta, Indonesia, International conference
    Oral presentation

  • Monitoring debris-flow deposit remobilization patterns with structure-from-motion (SfM) modelling.
    Starheim, C, GOMEZ ANDRE CHRISTOPHER, Hadmoko, S.D, Davies, T, Owens, T
    IAG Australia, 2013, English, Perth, Australia, International conference
    Oral presentation

  • Measurements of Trees Using Terrestrial Laser For Satellite Remote Sensing
    Kato, A, Morgenroth, J, Kelbe, D, GOMEZ ANDRE CHRISTOPHER
    IEEE International Geoscience and Remote Sensing Symposium, 2013, English, International conference
    Oral presentation

  • Graph Theory: the Ford and Fuklerson and the Edmonds-Karp Algorithms to Model Dynamic Sedimentary Systems.
    GOMEZ ANDRE CHRISTOPHER, Starheim, C, Hadmoko, D.S, Lavigne, F
    IAG, Paris, FRANCE, 2013, English, International conference
    Oral presentation

  • Generating high spatiotemporal resolution digital terrain models for debris flow deposits from 3D structure from motion imagery and an unmanned aerial vehicle.
    Starheim, C, GOMEZ ANDRE CHRISTOPHER, Davies, T, Owens, I, Hadmoko, D.S
    IAG, Paris, FRANCE, 2013, English, International conference
    Oral presentation

  • Exploring the intricacies of sub-surface debris-flow deposit architecture using a Ground Penetrating Radar system.
    Starheim, C, GOMEZ ANDRE CHRISTOPHER
    IAG Australia, 2013, English, Perth, Australia, International conference
    Oral presentation

  • Evacuation Routing Out of Tsunami Hazard Zones.
    SCHUSTER M, GOMEZ ANDRE CHRISTOPHER
    GI Forum 2013, Salzburg, Austria, 2013, English, International conference
    Oral presentation

  • Coastal Quakes: Using global datasets to expose an underrated hazard.
    Hart, D, GOMEZ ANDRE CHRISTOPHER, Bealing, P
    IAG, Paris, FRANCE, 2013, English, International conference
    Oral presentation

  • Assessing drainage network extractions in low-relief area from Lidar-derived DEM and DEMs derived from other data sources: a case study from the Cuvelai Basin, Namibia.
    Persendt, F, GOMEZ ANDRE CHRISTOPHER
    IAG, Paris, FRANCE, 2013, English, International conference
    Oral presentation

  • Scales in Environmental Sciences. University of Chiba
    GOMEZ ANDRE CHRISTOPHER
    Chiba Universitt - Guest Lecture CERES, Jan. 2013, English, Domestic conference
    Public discourse

  • Close-range ‘remote-sensing’: Combining techniques to relate sediment deposits to processes
    GOMEZ ANDRE CHRISTOPHER
    University of Chiba, Centre for Environmental Remote Sensing: Yube Seminar Series, Dec. 2012, English, Domestic conference
    Oral presentation

  • The worst day since the WWII capitulation of Japan
    GOMEZ ANDRE CHRISTOPHER
    Seminar at University of Gadjah Mada, Yogyakarta, Indonesia, Nov. 2012, English, International conference
    Public discourse

  • Linking deposits and forms to processes: Geospatial Sciences to tackle Erosion Issues.
    GOMEZ ANDRE CHRISTOPHER
    Department of Agriculture, University of Kyoto, Japan - invited Seminar, Nov. 2012, English, Domestic conference
    Public discourse

  • Automated 3D-RGB Topology of SfM-MVS Derived Data for Environmental Analysis: Application to the Kali Putih River, Merapi Volcano
    GOMEZ ANDRE CHRISTOPHER
    IGI International Seminar: Utilization of Geospatial Information to Raise Environmental Awareness in Realizing the Nation Character, Nov. 2012, Domestic conference
    Invited oral presentation

  • Smashing children hearts on concrete and hanging engineers: The 11 March 2011 tsunami.
    GOMEZ ANDRE CHRISTOPHER
    Meeting of the New Zealand Geographical Society, 2012, English, International conference
    Oral presentation

  • Large-scale internal structure in volcanogenic breakout flood deposits: Extensive GPR survey on volcaniclastic deposits
    Kataoka, K, GOMEZ ANDRE CHRISTOPHER
    American Geophysical Union Fall Meeting, 2012, English, International conference
    Oral presentation

  • Impacts of tsunami on Banks Peninsula: Sedimentary signatures of previous events.
    Kain, C, GOMEZ ANDRE CHRISTOPHER, Hart, D.E
    New Zealand Coastal Society Annual Conference, 2012, English, International conference
    Oral presentation

  • How Hazard Planners Created the Tohoku Catastrophe
    GOMEZ ANDRE CHRISTOPHER, Hart, D.E
    6th Australasian Natural Hazards Management Conference, 2012, English, International conference
    Oral presentation

  • Flood hazard mapping using multisensory multispectral satellite data fusion in the Cuvelai basin, Namibia
    Persendt, F, GOMEZ ANDRE CHRISTOPHER
    16th SANCIAHS National Hydrology Symposium, 2012, English, International conference
    Oral presentation

  • Earth Quakes – Coastal and River Disasters. Christchurch
    Hart, D, GOMEZ ANDRE CHRISTOPHER, Kelland, E, Wassmer, P
    Australasian Hazards Conference, 2012, English, International conference
    Oral presentation

  • Combining SfM and GIS to efficiently monitor landform change. Surakarta City, Java, Indonesia
    Starheim, C, GOMEZ ANDRE CHRISTOPHER, Hadmoko, D.S
    IGI International Seminar: Utilisation of geospatial information to raise environmental awareness in realizing the nation character, 2012, English, International conference
    Oral presentation

  • Coastal quakes: New Zealand’s underrated hazard complex. Auckland, New Zealand
    Hart, D, GOMEZ ANDRE CHRISTOPHER, Kirk, R.M, Hughes, M.W, Kelland, E, Wood, G.B, Davis, B, Giovinazzi, S
    New Zealand Coastal Society Annual Conference (NZCS), 2012, English, International conference
    Oral presentation

  • Christchurch’s Coastal and River Quakes: Implications for disaster resilience in New Zealand. Christchurch, New Zealand
    Hart, D, GOMEZ ANDRE CHRISTOPHER, Kelland, E
    University of Canterbury Earthquake Research Forum, 2012, English, International conference
    Oral presentation

  • Characterizing in-flow sediment dynamics of lahars affecting Mount Semeru, Indonesia.
    Starheim, C, GOMEZ ANDRE CHRISTOPHER, Davies, T, Lavigne, F, Wassmer, P
    6th Australasian Natural Hazards Management Conference, 2012, English, International conference
    Oral presentation

  • Volcaniclastic Sedimentation Process in Java, Indonesia. Guest Speaker at the Department of Geology & Research Institute for Natural Hazards and Disaster Recovery
    GOMEZ ANDRE CHRISTOPHER
    Niigata University, Dec. 2011, English, International conference
    Invited oral presentation

  • Understanding the Tsunami of December 26th, 2004 in Banda Aceh: Event, Impacts and Post-tsunami Campaign
    GOMEZ ANDRE CHRISTOPHER
    University of Canterbury, Geology Department Seminar, Aug. 2011, English, Domestic conference
    Public discourse

  • Application of Computer Vision to Lahar Automatic Detection
    GOMEZ ANDRE CHRISTOPHER
    Conférence Nationale Des Jeunes Géomorphologues organisée par le G.F.G., Feb. 2010, English, Domestic conference
    Oral presentation

  • Geostatistic Analysis of Blocks Distribution Detected by Remote Sensing: Case Study in the Curah Lengkong Valley, Semeru Volcano, Indonesia
    GOMEZ ANDRE CHRISTOPHER
    Conference Nationale des Jeunes Geomorphologues GFG, 2010, French, Domestic conference
    Oral presentation

  • The 2004 tsunami in Banda Aceh, an overview
    GOMEZ ANDRE CHRISTOPHER
    guest speaker at Veteran Universitas in Jogjakarta Indonesia, 2006, Domestic conference
    Oral presentation

  • International Paper - writing to be published
    C. Gomez
    ICERM - Workshop, English
    [Invited]
    Public discourse

■ Affiliated Academic Society
  • Japanese Society of Forestry
    2025 - Present

  • Japanese Society of Civil Engineers
    Apr. 2022 - Present

  • Japanese Society of Sediment Control Engineering
    Apr. 2017 - Present

  • Japanese Association for Natural Disaster Science
    2017 - Present

  • Japanese Association for Quaternary Research
    Jan. 2012 - Present

  • Association of Japanese Geographers
    2008 - Present

■ Research Themes
  • 降雨は火山災害を激化させるのか：時系列データの統合・再構築に基づく山体変形解析
    堀田 紀文, 篠原 慶規, ゴメス クリストファー
    日本学術振興会, 科学研究費助成事業, 挑戦的研究(萌芽), 東京大学, 30 Jun. 2023 - 31 Mar. 2025

  • 土砂災害の外力と境界条件に基づくリスク評価を用いた山地林のゾーニング手法の開発
    堀田 紀文, 厚井 高志, 執印 康裕, ゴメス クリストファー
    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), 東京大学, 01 Apr. 2022 - 31 Mar. 2025

  • Spatial distribution of radon and thoron in the soil around active faults as a contribution to the elevated indoor radon
    Janik Miroslaw, 小平 聡, ゴメス クリストファー
    日本学術振興会, 科学研究費助成事業 基盤研究(C), 基盤研究(C), 国立研究開発法人量子科学技術研究開発機構, 01 Apr. 2021 - 31 Mar. 2024
    The sudden and catastrophic or slow and continuous surface release of naturally occurring toxic gases, such as radon or CO2, poses a serious health risk to people living in geologically active regions. Indoor radon activity concentrations, however, vary widely and depend on a variety of factors such as underlying geology, water, weather conditions, and building type. In this project, we seek to understand and estimate radon transport in soil in a region with active faults. The results of this project will 1) help find solutions to mitigate the problem of radon exposure and 2) can be used to apply radon to geohazard studies. The configuration and validation of the radon and thoron measurement system at the reference point (QST) was completed this year. We developed a new device, called PECAME, for simultaneous measurement of permeability, CO2 and CH4. The PECAME consists of pressure and flow meters, pumps, and sensors to measure CO2 and CH4. Data are collected and stored in memory every one minute using a data logger (GRAPHTEC midi Logger GL220). The PECAME device was tested at a reference site located at the QST campus, and the permeability measurement results were compared with the commercial portable permeability measurement device RADON-JOK. The operating principle of PECAME and RADON-JOK is based on Darcy's law, which describes the flow of fluid through a porous medium. In addition, subsurface surveys were conducted to identify faults near the active Fugendake volcano (Nagasaki Prefecture) using ground penetrating radar (GRP) and data sets were collected.

  • 地形発達学的手法と種々のセンシング技術を応用した深層崩壊発生危険度評価手法の開発
    山川 陽祐, 堀田 紀文, ゴメス クリストファー, 鄒 青穎, 正岡 直也
    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), 筑波大学, 01 Apr. 2019 - 31 Mar. 2023
    本研究は，深層崩壊の実用的な発生危険度評価手法の開発を目指す。深層崩壊は発生頻度が低いものの現象・被害の規模が大きいため，より的確な発生予測が求められる。しかし，崩壊に先立つ予兆が隠微で予測が困難であるため，潜在的な危険個所の段階的な絞り込みがより着実と考えられる。本研究では，既存の地形指標によって抽出された危険個所に対して，地形発達学的手法（谷の下刻発達の評価）および種々のセンシング技術を適用し，地盤内部構造を踏まえた安定性の低い斜面を検出する手法の開発に取り組む。具体的には，深層崩壊の主要な発生場である大起伏の付加体堆積岩山地において，①直接手法を用いた斜面安定性の評価，②物理探査手法およびUAVリモートセンシングの適用性検証，③地形発達学的手法の適用性検証，に取り組む。当該年度においては，①に関して，崩壊トリガーとなる地下水位の降雨応答特性の解明のために，主に静岡県の大井川水系（井川湖周辺）において多地点での水文観測（平水時の流量および渓流水の電気電導度の計測）を実施した。その他，滋賀県の葛川水系（比良山）や台湾の中央山脈南部においても同様の観測を一部行った。②に関しては，葛川水系（比良山）にて比抵抗探査法と自然電位法の適用性の検証を行った。また，台湾の中央山脈南部においても比抵抗探査法の適用性検証を行った。③については，大井川水系（井川湖周辺），葛川水系（比良山），台湾の中央山脈南部においてそれぞれ航空レーザー測量により取得された高精細な数値地形図に基づき，深層崩壊に先立つと考えられる重力変形地形などの判読を行った。

  • Assessment of effective forest management to reduce driftwood disasters based on analyses of long-term water and sediment discharge using a distributed process-oriented model
    Hotta Norifumi
    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. 2018 - 31 Mar. 2022
    We examined the production, transport, and deposition of sediment and woody debris in forested watersheds, including sites where driftwood disasters had occurred, by field reconnaissance. We also used several models to describe the sediment dynamics. The results revealed significant variation of fluidity in landslide-triggered debris flows due to the liquefaction of fine sediments, and that accurate prediction of the post-landslide inundation area of sediment is critical for countermeasures against driftwood disasters. In addition, the topographical conditions of the headwater catchment affected the allocation of driftwood to debris flows and floods. Analyses of the long-term behavior of sediment and woody debris indicated that forest zoning to reduce driftwood disasters should consider the connectivity between the slope and channel system controlling the supply of sediment and woody debris into the watersheds.

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