*Teppei J Yasunari^1,2, Daiju Narita³, Toshihiko Takemura⁴, Shigeto Wakabayashi⁵, Akira Takeshima⁶ (1.Arctic Research Center, Hokkaido University, 2.Center for Natural Hazards Research, Hokkaido University, 3.Graduate School of Arts and Sciences, The University of Tokyo, 4.Research Institute for Applied Mechanics (RIAM), Kyushu University, 5.School of Engineering, Hokkaido University, 6.Department of Civil Engineering, The University of Tokyo)

*Daiju Narita¹, Teppei J Yasunari², Toshihiko Takemura³, Shigeto Wakabayashi², Akira Takeshima¹ (1.University of Tokyo, 2.Hokkaido University, 3.Kyushu University)