S52C:
Sequential Ruptures of Multifault Segments: The 2016 Kumamoto Earthquakes in Japan I

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Session ID#: 18066

Session Description:
A series of powerful earthquakes and the following aftershocks has struck the Kumamoto area in Kyushu, Japan, from 14th April, 2016. Each powerful earthquake was right-lateral strike-slip faulting, which well matches with the regional stress and strain fields. Initial M6.5 earthquake occurred along the northern segment of “Hinagu fault”, which is among the 100 most active faults. About one day after the first event, M 7.3 earthquake nucleated around the north tip of Hinagu fault, and mainly propagated along the eastern segment of another active fault, named “Futagawa fault”, accompanying surface ruptures. The M 7.3 earthquake has immediately boosted a widespread seismicity along the northeastern extension including rim of Aso volcano and Beppu geothermal area. We welcome your contributions related to all topics of multi-fault segment ruptures, from aspects of seismicity evolution, ground motion, source process, geodetic observation, surface rupture observation, numerical rupture simulation, laboratory experiment and seismic hazard assessments.
Primary Convener:  Aitaro Kato, University of Tokyo, Bunkyo-ku, Japan
Conveners:  Shin Aoi, National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan and Takuya Nishimura, Kyoto University, Disaster Prevention Research Institute, Kyoto, Japan
Chairs:  Aitaro Kato, University of Tokyo, Bunkyo-ku, Japan, Shin Aoi, National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan and Takuya Nishimura, Kyoto University, Disaster Prevention Research Institute, Kyoto, Japan
OSPA Liaison:  Aitaro Kato, University of Tokyo, Bunkyo-ku, Japan

Cross-Listed:
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

7209 Earthquake dynamics [SEISMOLOGY]
7212 Earthquake ground motions and engineering seismology [SEISMOLOGY]
7223 Earthquake interaction, forecasting, and prediction [SEISMOLOGY]
7280 Volcano seismology [SEISMOLOGY]

Abstracts Submitted to this Session:

Outline of the 2016 Kumamoto, Japan, Earthquakes and lessons for a large urban earthquake in Tokyo Metropolitan area (180867)
Naoshi Hirata, Earthquake Research Institute, University of Tokyo, Tokyo, Japan
Strong ground motion of the 2016 Kumamoto earthquake (189757)
Shin Aoi, Takashi Kunugi, Wataru Suzuki, Hisahiko Kubo, Nobuyuki Morikawa and Hiroyuki Fujiwara, National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan
Detailed ground surface displacement and fault ruptures of the 2016 Kumamoto Earthquake revealed by SAR and GNSS data (132960)
Tomokazu Kobayashi1, Hiroshi Yarai1, Yu Morishita1, Satoshi Kawamoto2, Satoshi Fujiwara2 and Takayuki Nakano2, (1)Geospatial Information Authority of Japan, Ibaraki, Japan, (2)Geospatial Information Authority of Japan, Tsukuba, Japan
Slip-partitioned Surface Ruptures for the Mw 7.0 2016 Kumamoto, Japan, Earthquake (143339)
Shinji Toda1, Heitaro Kaneda2, Shinsuke Okada3, Daisuke Ishimura3 and Zoe K Mildon4, (1)Tohoku University, International Research Institute of Disaster Science, Sendai, Japan, (2)Chiba University, Chiba, Japan, (3)Tohoku University, Sendai, Japan, (4)University of Plymouth, Plymouth, United Kingdom
Kinematic Rupture Process of the 2016 Mw 7.1 Kumamoto Earthquake Sequence from Joint Inversion of Strong Motion, Teleseismic and Geodetic Observations (145670)
Han Yue1, Prof. Mark Simons, Ph.D.2, Cunren Liang3, Heresh Fattahi4, Eric Jameson Fielding5, Hiroo Kanamori1, Donald V Helmberger1, Sylvain Gaetan, Robert, Marcel Michel6 and Jean-Philippe Avouac7, (1)California Institute of Technology, Pasadena, CA, United States, (2)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, (3)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (4)California Institute of Technology, Division of Geological and Planetary sciences, Seismological Laboratory, Pasadena, CA, United States, (5)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (6)University of Cambridge, Department of Earth Sciences, Cambridge, UNITED KINGDOM, (7)California Institute of Technology, Seismological Laboratory, Division of Geological and Planetary Sciences, Pasadena, CA, United States
Foreshock Migration Preceding the 2016 Mw 7.0 Kumamoto Earthquake, Japan (145608)
Aitaro Kato, The University of Tokyo, Tokyo, United States, Junichi Fukuda, University of Tokyo, Earthquake Research Institute, Bunkyo-ku, Japan, Shigeki Nakagawa, University of Tokyo, Bunkyo-ku, Japan and Kazushige Obara, The University of Tokyo, Earthquake Research Institute, Tokyo, Japan
Source Rupture Process and Near-Fault Ground Motions of the 2016 Kumamoto Earthquake Sequence Estimated from Strong Motion Data (143389)
Kimiyuki Asano, Kyoto University, Disaster Prevention Research Institute, Uji, Kyoto, Japan and Tomotaka Iwata, Kyoto University, Kyoto, Japan
Kinematic inversion of postseismic deformation following the 2016 Mw 7.0 Kumamoto earthquake for the distribution of brittle and ductile crustal processes. (170019)
James Daniel Paul Moore1, Sylvain Barbot2, Valere Lambert3, Chi-Hsien Tang4, Dongju Peng1, Sagar Shrishailappa Masuti1, Justin Dauwels5, Songwei Wu5, Hang Yu5, Ya-Ju Hsu6, Priyamvada Nanjundiah1, Shengji Wei7, Eric Ostrom Lindsey8, Lujia Feng7, Bunichiro Shibazaki9 and Teng Wang10, (1)Earth Observatory of Singapore, Singapore, Singapore, (2)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (3)California Institute of Technology, Seismological Laboratory, Pasadena, United States, (4)Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, Taipei, Taiwan, (5)Nanyang Technological University, School of Electrical & Electronic Engineering, Singapore, Singapore, (6)Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, (7)Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, (8)Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore, (9)Building Research Institute, Ibaraki, Japan, (10)Southern Methodist University, Dallas, TX, United States

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