*Daisuke Ishimura¹, Yoshiya Iwasa², Naoya Takahashi³, Ryuji Tadokoro⁴, Ryuhei Oda¹, Kosumo Kajii⁵, Jun Matsukaze¹, Takashi Ishizawa⁶, Hiroyuki Tsutsumi⁵ (1.Department of Geography, Tokyo Metropolitan University, 2.Graduate School of Education, Hiroshima University, 3.Department of EarthScience, Tohoku University, 4.Graduate School of Science, Chiba University, 5.Department of Environmental Systems Science, Faculty of Science and Engineering, Doshisha University, 6.International Research Institute of Disaster Science, Tohoku University)