*Kunihiko Endo¹, Toshihiko Sugai², Tsutomu Nakazawa³, Suginaka Yusuke⁴, Naoki Naito⁵, Takato Takemura⁶ (1.Institute of Natural Sciences, Nihon University, 2.University of Tokyo, 3.AIST, 4.Research Center of Computational Mechanics , 5.Graduate School , Nihon University, 6.Department of Earth System Sciences, Nihon University )