Shukei Ohyanagi¹, Kazuaki Ohta², Yoshihiro Ito², Ryota Hino³, Yusaku Ohta³, Ryosuke Azuma⁴, Masanao Shinohara⁵, Kimihiro Mochizuki⁶, Toshinori Sato⁷ and Yoshio Murai⁸, (1)Kyoto University, Kyoto, Japan, (2)Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan, (3)Tohoku University, Graduate School of Science, Sendai, Japan, (4)Tohoku University, International Research Institute of Disaster Science, Sendai, Japan, (5)Univ Tokyo, Tokyo, Japan, (6)University of Tokyo, Earthquake Research Institute, Bunkyo-ku, Japan, (7)Faculty Science Chiba Univ, Chiba, Japan, (8)Hokkaido Univ, Sapporo, Japan