*Erick Velasco R.¹, Kazuhisa Goto², Daisuke Sugawara³, Yuichi Nishimura⁴, Takahiro Shinohara¹, Takashi Chiba⁵ (1.Earth Science Department, Graduate Faculty of Science, Tohoku University, 2.Department of Earth and Planetary Science, Graduate School of Science, the University of Tokyo, 3.Museum of Natural and Environmental History, Shizuoka, 4.Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University, 5.Faculty of Bioresource Sciences, Akita Prefecture University.)

*Yuichi Nishimura¹, Alexander Shishkin², Yasuhiro Takashimizu³, Daisuke Sugawara⁴, Takashi Ishizawa⁵, Koichiro Tanigawa⁶ (1.Graduate School of Science, Hokkaido University, 2.Institute of Marine Geology and Geophysics, Russian Academy of Sciences, 3.Faculty of Education, Niigata University, 4.Museum of Natural and Environmental History, Shizuoka, 5.International Research Institute of Disaster Science, Tohoku University, 6.The National Institute of Advanced Industrial Science and Technology )

*Hokuto Higaki¹, Kazuhisa Goto², Hideaki Yanagisawa³, Daisuke Sugawara⁴ (1.Tohoku University, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.Department of regional Management, Faculty of Liberal Arts, Tohoku Gakuin University, 4.Museum of Natural and Environmental History, Shizuoka)

*yuichi ebina¹, shuji moriguchi¹, shuichi kure¹, Daisuke Sugawara² (1.International Research Institute of Disaster Science, 2.Museum of Natural and Environmental History, Shizuoka)