*susumu sakashita1, shinsuke okada2, toshifumi imaizumi2, Shigeru Toda3, kyoko kagohara5, nobuhisa matsuta4, satoru yamaguchi6, masato yamamoto1, mikihiro imai1, hitoshi todokoro1
(1.OYO corporation, 2.Tohoku University, 3.Aichi University of education, 4.Okayama University, 5.Yamaguchi University, 6.Osaka city University)
Keywords:S-wave shallow seismic reflection survey, high-density electrical resistivity survey, strike-slip fault, 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 S-wave shallow seismic reflection survey and high-density electrical resistivity survey. Finally, we summarize applicability and efficiency of these geophysical explorations for the strike-slip active fault.