convener:Hiromichi Nagao(Earthquake Research Institute, The University of Tokyo), Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University), Yusuke Iida(Niigata University), Masuo Nakano(Japan Agency for Marine-Earth Science and Technology), Chairperson:Hiromichi Nagao(Earthquake Research Institute, The University of Tokyo), Yusuke Iida(Niigata University), Masuo Nakano(Japan Agency for Marine-Earth Science and Technology), Masayuki Kano(Graduate school of science, Tohoku University)