The 2026 SSJ Fall Meeting
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Poster session (Nov 5)Late-Breaking session : S24. The 2026 Kumamoto Earthquake

[P24]The 2026 Kumamoto Earthquake

Thu. Nov 5, 2026 5:15 PM - 6:45 PM JST
Thu. Nov 5, 2026 8:15 AM - 9:45 AM UTC
Room P24 (802ー805) (8F)

[P24-01]Infrasound Analysis of the Explosion Incident at Kashima Town Following the 2026 Kumamoto Earthquake

*Masumi YAMADA1 (1. DPRI Kyoto University)

[P24-02]Spatio- and temporal evolution of stress drops for the Kumamoto earthquake sequences in 2016 and 2026

*Masahiro KOSUGA1, Takuto MAEDA1 (1. Graduate School of Science and Technology)

[P24-03]Estimating Crustal Deformation field and Stress Loading Process around focal area of the 2026 Kumamoto Earthquake

*Yushi Nagayama1, Satoshi Matsumoto2, Yuhei Yuasa3, Takeshi Matsushima2, Kentaro Emoto2 (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2. Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 3. Japan Meteorological Agency)

[P24-04]Postseismic stress loading on the source fault of the 2026 Kumamoto earthquake due to the 1944 Tonankai and 1946 Nankai earthquakes

*Akinori Hashima1, Takane Hori2, Takeshi Iinuma2, Sota Murakami2, Kohei Fujita3, Tsuyoshi Ichimura3 (1. Tokyo Gakugei University, 2. Japan Agency for Marine-Earth Science and Technology, 3. Earthquake Research Institute, University of Tokyo)

[P24-05]Spatiotemporal analysis of seismicity changes before and after the 2016 Kumamoto earthquake using ETAS model

*Harumi Uchida1, Tomomi Okada1, Ryotaro Fujimura1, Ayaka Tagami2,1, Tomoaki Nishikawa3 (1. Graduate School of Science, Tohoku University, 2. National Institute of Advanced Industrial Science and Technology, 3. Disaster Prevention Research Institute, Kyoto University)

[P24-06]Stress Field Changes after the 2026 Kumamoto Earthquake

*Hiromi Sunagawa1, Yushi Nagayama1, Issei Hirata1, Satoshi Matsumoto2, Kentaro Emoto2, Takeshi Matsushima2, Joint University Seismic Observation Group for the 2026 Kumamoto Earthquake1 (1. Kyushu University, 2. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University)

[P24-07]3D stress field in and around the 2016 and 2026 Kumamoto earthquake source regions

*Serika Mishima1, Satoshi Matsumoto1,2, Kentaro Emoto1,2, Yushi Nagayama1 (1. kyushu university, 2. Institute of Seismology and Volcanology, Faculty of Science, Kyushu University)

[P24-08]Frictional properties of Hinagu fault zone in Kumamoto Prefecture estimated by stress drops of small earthquakes

*Takuji YAMADA1 (1. Ibaraki Univ.)

[P24-09]Comparison of Shear-Strain Energy Changes and Largest Aftershocks during the Two Weeks Following the 2016 and 2026 Kumamoto Earthquakes

*Tomotake UENO1, Tatsuhiko SAITO1, Sachiko TANAKA1 (1. National Research Institute for Earth Science and Disaster Resilience)

[P24-10]High-Resolution 3D Topographic Survey of Surface Deformation Associated with the 2026 Kumamoto Earthquake

*Tomohiro Makita1, Kenta Haranishi1, Satoshi Nakagawa1, Wataru Mori2, Hideaki Goto3 (1. Hiroshima University Graduate School of Humanities and Social Sciences (Master's Course) Division of Humanities and Social Sciences Humanities Program, 2. Hiroshima University Graduate School of Humanities and Social Sciences (Doctor's Course) Division of Humanities and Social Sciences Humanities Program, 3. Hiroshima University Graduate School of Humanities and Social Sciences)

[P24-11]Spatial correlation between shear-wave splitting and the 2026 Kumamoto earthquake

*Tomomi OKADA1, Ryotaro Fujimura1, Harumi Uchida1, Satoshi Hirahara1, Ryota Takagi1, Yoshiaki Matsumoto1, Ayaka Tagami2,1, Martha Savage3, Satoshi Matsumoto4 (1. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2. Geological Survey of Japan, AIST, 3. Victoria University of Wellington, 4. Graduate School of Science, Kyushu University)

[P24-12]Aftershock distribution of the 2026 Kumamoto earthquake determined using a 3-D velocity structure model

*Haruo HORIKAWA1 (1. The National Institute of Advanced Industrial Science and Technology)

[P24-13]Spatiotemporal distribution of seismicity and b-values before and after the 2026 Kumamoto earthquake

*Kazuyoshi NANJO1 (1. University of Shizuoka)

[P24-14]Small repeating earthquake activities in the areas around the 2026 Kumamoto Earthquake

*Toshihiro IGARASHI1 (1. Earthquake Research Institute, The University of Tokyo)

[P24-15]Distribution and characteristics of liquefaction during the 2026 Kumamoto earthquake

*Shigeki SENNA1 (1. NIED)

[P24-16]Coseismic softening of instrumented near-field sites during the 2026 MJ7.1 Kumamoto earthquake

*Miroslav Hallo1, Asako Iwaki1, Nobuyuki Morikawa1 (1. NIED)

[P24-17]Changes in attenuation structure before and after the 2016 Kumamoto earthquake inferred from seismic attenuation tomography

*Masanao Komatsu1, Hiroshi Takenaka2 (1. Okayama Gakuin University, 2. Okayama University)

[P24-18]Pre-Seismic 3D Coda Attenuation Structure Along the Hinagu Fault Zone Prior to the 2026 Kumamoto Earthquake

*Aditya Dwi Prasetio1, Kentaro Emoto2, Satoshi Matsumoto2, Takeshi Matsushima2, Satoru Baba2, Galina Nataliya2, Kazunari Uchida2, Masahiro Yamaguchi2, Yushi Nagayama1, Issei Hirata1, Serika Mishima1, Hiromi Sunagawa1, Ayato Soga1 (1. Graduate School of Science, Department Earth and Planetary Sciences, Kyushu University, 2. Institute of Seismology and Volcanology, Kyushu University)

[P24-19]Fault geometry of the 2016 and 2026 Kumamoto earthquakes inferred from aftershock distributions based on 0.01 manten seismic observation

*Issei Hirata1, Satoshi Matsumoto2, Takeshi Matsushima2, Kentaro Emoto2, Yushi Nagayama1, Joint University Seismic Observation Group for the 2026 Kumamoto Earthquake1 (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2. Institute of Seismology and Volcanology, Faculty of Science, Kyushu University)

[P24-20]Overview of the Joint University Observation of the 2026 Kumamoto Earthquake

*Kentaro EMOTO1, Satoshi Matsumoto1, Takeshi Matsushima1, Satoru Baba1, Kazunari Uchida1, Masahiro Yamaguchi1, Yushi Nagayama1, Issei Hirata1, Hiromi Sunagawa1, Serika Mishima1, Ayato Soga1, Takahashi Hiroaki2, Masayoshi Ichiyanagi2, Teruhiro Yamaguchi2, Tomomi Okada3, Ryota Takagi3, Keisuke Yoshida3, Yoshiaki Matsumoto3, Satoshi Hirahara3, Syuutoku Kimura3, Ryotaro Fujimura3, Eiji Kurashimo4, Shinichi Sakai4, Masanao Shinohara4, Aitaro Kato4, Miyakawa Koji4, Masato Serizawa4, Keiichi Tadokoro5, Shinichiro Horikawa5, Tomoaki Nishikawa6, Masatoshi Miyazawa6, Ohmi Shiro6, Takuya Nishimura6, Rintaro Miyamachi6, Airi Nagaoka6 (1. Kyushu University, 2. Hokkaido University, 3. Tohoku University, 4. The University of Tokyo, 5. Nagoya University, 6. Kyoto University)

[P24-21]Temporary strong ground motion observation survey in areas affected by the 2026 Kumamoto earthquake

*Seiji Tsuno1, Tatsuo Kanno2, Michiko Shigefuji2, Hiroe Miyake3, Kimiyuki Asano4, Fumiaki Nagashima4, Shinichi Matsushima4, Towa Ono1, Kotomi Iwamoto1 (1. Institute of Science Tokyo, 2. Kyushu University, 3. University of Tokyo, 4. Kyoto University)

[P24-22]Distribution of Surface Ruptures Associated with the 2026 Kumamoto Earthquake and Their Relationship to Previously Mapped Active Faults

*Hideaki GOTO1, Kenta Haranishi1, Tomohiro Makita1, Wataru Mori1, Satoshi Nakagawa1, Yasuhiro Kumahara1, Yoshiya Iwasa2, Mitsuhisa Watanabe4, Yasuhiro Suzuki3 (1. Hiroshima University, 2. University of Teacher Education Fukuoka, 3. Aichi University, 4. Toyo University)

[P24-23]Detection of Crustal Deformation and Local Linear Features Associated with the 2026 Kumamoto Earthquake Using Satellite SAR Data

*Masahiro Nakashima1, Takumi Onuma1, Mitsukazu Kageshima1, Kyohei Takahashi1, Akio Hara1, Yuki Hiura1, Hiromi Kamata1, Shinji Kawasaki1 (1. JGI, Inc.)

[P24-24]Stress redistribution in the Hinagu fault zone due to the 2026 Kumamoto earthquake and 2016 Kumamoto earthquake sequence

*Ritsuya Shibata1, Hisahiko Kubo1, Wataru Suzuki1, Youichi Asano1, Shin Aoi1, Haruko Sekiguchi2 (1. National Research Institute for Earth Science and Disaster Resilience, 2. Disaster Prevention Research Institute, Kyoto University)

[P24-25]Displacement waveform of 2026 Kumamoto earthquake recorded near the fault

*Kunikazu YOSHIDA1 (1. University of Fukui)

[P24-26]Time-Resolved Surface-Fault Displacement During the 2026 Kumamoto Earthquake From Near-Fault Video

*Bogdan Dumitru Enescu1,5, Shinji Toda2, Yuji Yagi3, Kazuo Oike4 (1. Department of Geophysics, Graduate School of Science, Kyoto University, Kyoto, Japan, 2. International Research Institute of Disaster Science, Tohoku University, Sendai, Japan, 3. Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan, 4. Global Center for Asian and Regional Research, University of Shizuoka, Shizuoka, Japan, 5. National Institute for Earth Physics, Magurele, Ilfov, Romania)

[P24-27]Application of automated source process analysis using near-field strong motion data to the 2026 Kumamoto Earthquake

*Kenji NAKATA1, Takeyasu YAMAMOTO1 (1. Meteorological Research Institute(MRI), Japan Meteorological Agency(JMA))

[P24-28]Co-seismic crustal deformation associated with the 2026 Kumamoto earthquake and fault source model

*Yuji HIMEMATSU1, Hiroshi Munekane1, Tomokazu Kobayashi1, Masayoshi Ishimoto1, Misa Ichimura1, Reitaro Muroyama1, Chiha Shodai1, Sho Izawa1, Kano Mikihara1, Nobuhiro Ishikura1, Takahiro Wakasugi1 (1. Geospatial Information Authority of Japan)

[P24-29]Rupture Process of the 2026 Kumamoto Earthquake Using Strong Motion Waveforms and Its Relations with Near-Fault Ground Motion

*Kazuhito HIKIMA1, Shinya TANAKA2 (1. Tokyo Electric Power Company Holdings, Inc. Tepco Research Institute, 2. Tokyo Electric Power Services Co., Ltd.)

[P24-30]Source modeling for the 2026 Kumamoto earthquake using empirical Green’s function method

*Hidenori KAWABE1 (1. The University of Osaka)

[P24-31]Source modeling for the 2016 Kumamoto earthquake using empirical Green’s function method

*Yoshiaki SHIBA1 (1. Central Research Institute of Electric Power Industry)

[P24-32]Waveform inversion of the 2026 Kumamoto earthquake using empirical Green's functions

*Kenta Kobayashi1, Atsushi Nozu1, Noriki Sugahara1 (1. Port and Airport Research Institute)

[P24-33]Fault Rupture Process of the 2026 Kumamoto Earthquake and Analysis of the Distance Between the Hypocenter and Asperities

*Mitsutaka OHSHIMA1 (1. Shimizu corporation)

[P24-34]On the Damage Conditions in the Close Vicinity of the Surface Earthquake Faults Associated with the 2026 Kumamoto Earthquake

*Takao KAGAWA1, Tatsuya NOGUCHI1 (1. Tottori University)

[P24-35]Rapid Damage Assessment Using Sentinel-1/2 satellite data for the July 2026 Kumamoto Earthquake: Attempts and Challenges

*Satoshi Oimatsu1 (1. Mikage Inc.)

[P24-36]Validation of Ground-Motion Prediction for the 2026 Kumamoto Earthquake

*Asako IWAKI1, Nobuyuki Morikawa1, Yuma Matsumoto1, Shigeki Senna1 (1. National Research Institute for Earth Science and Disaster Resilience)

[P24-37]A Comparison of the observed strong motions and damages during the 2026 Kumamoto earthquake with their blind prediction in 2004

*Hiroshi KAWASE1 (1. General Building Research Corporation of Japan)

[P24-38]Feasibility of Real-Time Strong Ground Motion Monitoring and Prediction Using Hi-net During the 2026 Kumamoto Earthquake

*Naoki HAYASHIMOTO1, Yuki KODERA2, Mitsuyuki HOSHIBA2 (1. Earthquake Research Institute, The University of Tokyo, 2. Meteorological Research Institute)

[P24-39]Creating teachable moment presetations for recent earthquakes in Japan ---Improvements from the prototypes---

*Reiji KOBAYASHI1 (1. Kagoshima University)
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