[S-SS15] Active faults and paleoseismology

Wed. May 29, 2019 1:45 PM - 3:15 PM A02 (TOKYO BAY MAKUHARI HALL)

convener:Mamoru Koarai(Earth Science course, College of Science, Ibaraki University), Takashi OGAMI(National Institute of Advanced Industrial Science and Technology), Ryosuke Doke(Hot Springs Research Institute of Kanagawa Prefecture), Hisao Kondo(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Chairperson:Takashi Ogami(AIST), Koji Okumura(Hiroshima University)

Geologic and historic information on seismic cycles and on the magnitude and source faults of past earthquakes is essential information to understand future large earthquakes. The study of past faulting and seismicity is an important issue for an interdisciplinary community of seismologists, geologists, geomorphologists, archaeologists, and historians.

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1:45 PM - 2:00 PM

[SSS15-15] Shallow structures and tectonic geomorphology of active blind thrusts imaged by new hi-resolution seismic reflection profiling, Hokkaido, Northern Japan

*Tatsuya Ishiyama¹, Naoko Kato¹, Hiroshi Sato¹, Taro Koike², Katsuya Noda² (1.Earthquake Research Institute, University of Tokyo, 2.Geosys, Inc. )

2:00 PM - 2:15 PM

[SSS15-16] Paleo-seismological survey on the Idenokuchi fault, Nishihara village, Kumamoto prefecture

*Daisuke Ishimura¹, Hiroyuki Tsutsumi², Naoya Takahashi³, Ryuhei Oda¹, Jun Matsukaze¹, Heitaro Kaneda⁴, Motoya Kobayashi⁴, Yasuhiro Kumahara⁵, Makoto Kobayashi⁶, Toshihiko Ichihara⁷ (1.Department of Geography, Tokyo Metropolitan University, 2.Department of Environmental Systems Science, Faculty of Science and Engineering, Doshisha University, 3.Department of EarthScience, Tohoku University, 4.Graduate School of Science, Chiba University, 5.Graduate School of Education, Hiroshima University, 6.Research Center for Volcanic Hazards and Their Mitigation, Tokyo Metropolitan University, 7.Sedimentary Environments Research)

2:15 PM - 2:30 PM

[SSS15-17] Paleoseismic investigations of the Hinagu fault zone, Kumamoto, Japan: Preliminary result of trenching survey at Yatsushiro city

*Yukari Miyashita¹, Takashi Azuma¹, Yusuke Komine², Masao Kametaka², Midori Kishiyama² (1.Institute of Earthquake and Volcano Geology, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Dia Consultants Co. Ltd.)

2:30 PM - 2:45 PM

[SSS15-18] Seismic trenching on offshore part of the Hinagu Fault Zone, Kyushu, Japan −3D structure and paleo-seismicity of offshore dextral strike-slip fault

*Takashi OGAMI¹, Shintaro Abe², Kenjiro Mukaiyama³, Shigeyuki Suda⁴ (1.Geological Survey of Japan, AIST, 2.ADEP, 3.Kawasaki Geological Engineering Co. Ltd., 4.JGI Inc.)

2:45 PM - 3:00 PM

[SSS15-19] Conductivity Structure models of large and small slip regions at the 2016 Kumamoto earthquake sequence

*Satoru Yamaguchi¹, Yuto Yamanaka², Akira Mimura¹, Kazuki Fkue¹, Daigo Furukawa¹, Tada-nori Goto³, Hisatoshi Koji³, Sota Kawaguchi³, Koki Aizawa⁴, Shinichi Takakura⁵ (1.Department of Geosciences, Graduate School of Science, Osaka City University, 2.Faculty of Science, Osaka City University, 3.Department of Urban Management, Graduate School of Engineering, Kyoto University, 4.Institute of Seismology and Volcanology, Kyushu University, 5. Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology)

3:00 PM - 3:15 PM

[SSS15-20] The Timing and Extent of the Last Surface Rupture Event on the Himalayan Frontal Thrust in Central Nepal around Butwal

*Koji Okumura¹, Soma Nath Sapkota², Prakash Pokhrel², Hisao Kondo⁴, Takuya Furuhashi³ (1.Graduate School of Letters, Hiroshima University, 2.Department of Mines and Geology, 3.Taiheiyo Cement Corporation, 4.Geological Survey of Japan, AIST)

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