Japan Geoscience Union Meeting 2016

Presentation information

Poster

Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS31] Active faults and paleoseismology

Mon. May 23, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Mamoru Koarai(Earth Science course, College of Science, Ibaraki University), Hisao Kondo(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Ken-ichi Yasue(Japan Atomic Energy Agency), Hideaki Goto(Graduate school of letters, Hiroshima University)

5:15 PM - 6:30 PM

[SSS31-P13] Geophysical explorations along the Gomura and the Yamada fault zone, and its applicability: Part 2 P-wave seismic reflection survey, seismic refraction survey, CSAMT survey, and gravity survey

*Shinsuke Okada1, Toshifumi Imaizumi2, Susumu Sakashita3, Kyoko Kagohara4, Shigeru Toda5, Nobuhisa Matsuta6, Satoru Yamaguchi7, Masato Yamamoto3, Mikihiro Imani3, Hitoshi Todokoro3, Yoshikazu Matsubara3 (1.International Research Institute of Disaster Science, Tohoku University, 2.Graduate School of Science, Tohoku University, 3.Oyo Corporation, 4.Faculty of Education, Yamaguchi University, 5.Aichi University of Education, 6.Graduate School of Education, Okayama University, 7.Graduate School of Science, Osaka City University)

Keywords:P-wave seismic reflection survey, seismic refraction survey, CSAMT survey, gravity survey, Gomura fault zone, Yamada fault zone

As a part of a research project commissioned by Secretariat of Nuclear Regulation Authority (S/NRA/R), to reveal the subsurface geometry of active fault and geological structure around the Gomura fault zone and the Yamada fault zone, we execute a seismic reflection and refraction survey, S-wave shallow seismic reflection survey, CSAMT survey, high-density electrical resistivity survey, and gravity survey. In this presentation, we demonstrate detail results of P-wave seismic reflection survey, seismic refraction survey, CSAMT survey, and gravity survey. Finally, we summarize applicability and efficiency of these geophysical explorations for the strike-slip active fault.