*Yojiro Yamamoto¹, Aki Ito¹, Yasushi Ishihara¹, Masayuki Obayashi¹, Satoru Tanaka¹, Haruhisa Nakamichi², Hiroshi Yakiwara³, Yukihiro Nakatani³, Hiroko Sugioka^4,5, Hironori Otsuka⁴, Tetsuo Matsuno⁴, Nobukazu Seama^5,4 (1.Japan Agency for Marine-Earth Science and Technology, 2.Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University, 3.Nansei-Toko Observatory for Earthquakes and Volcanoes, Kagoshima University, 4.Kobe Ocean-Bottom Exploration Center (KOBEC), 5.Department of Planetology, Kobe University)

*Anca Opris¹, Keisuke Ariyoshi¹, Takahiro Hatano², Takane Hori³, Yojiro Yamamoto¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Department of Earth and Space Science, Osaka University, 3.R&D Center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology)