Convener:*Kyoko Okino(Ocean Research Institute, University of Tokyo), Keiichi Tadokoro(Research Center for Seismology, Volcanology and Earthquake and Volcano Research Center, Nagoya University), Osamu Ishizuka(Geological Survey of Japan, AIST), Tomohiro Toki(Faculty of Science, University of the Ryukyus), Narumi Takahashi(Research and Development Center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology), Chair:Norikatsu Akizawa(College of Science and Engineering, Kanazawa University), Tetsuo Matsuno(Earthquake Research Institute, The University of Tokyo), Kazuya Kitada(Research and Development Center for Submarine Resources Japan Agency for Marine-Earth Science and Technology)