*Shin Toyoda¹, Marin Yamamoto², Jun-ichiro Ishibashi³ (1.Institute of Paleontology and Geochronology, Okayama University of Science, 2.Department of Applied Physics, Okayama University of Science, 3.Kobe Ocean-Bottom Exploration Center, Kobe University)

*Jun Nishijima¹, Keigo Kitamura¹, Koki Aizawa¹, Jun-ichiro Ishibashi², Wipoo Prasitwuttisak¹, Takeshi Tsuji³, Tatsunori Ikeda¹, Yoshio Soeda⁴, Haruhiro Inagaki⁴, Hiroki Saito⁴ (1.Kyushu University, 2.Kobe University, 3.The University of Tokyo, 4.West Japan Engineering Consultants, Inc.)

*Hikaru Sakamoto¹, Tomoharu Miyamoto², Takeshi Matsushima³, Jun-ichiro Ishibashi⁴, Keigo Mori⁵ (1.Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 3.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 4.Kobe Ocean-Bottom Exploration Center, 5.CTI ENGINEERING CO.,LTD.)

*Saki Tsutsumi¹, Yumi Kiyota¹, Jun-ichiro Ishibashi², Makoto Tanaka³ (1.WEST JAPAN ENGINEERING CONSULTANTS, INC., 2.Kobe University, 3.Japan Organization for Metals and Energy Security (JOGMEC))

*Man-Yin Tsang¹, Jun-ichiro Ishibashi², Shin Toyoda³, Marin Yamamoto³, Tatsuo Nozaki⁴, Kazuki Kohama⁵, Kazuya Kitada⁴, Yuzuru Yamamoto¹ (1.Kobe University, 2.Kobe Ocean-Bottom Exploration Center, 3.Okayama University of Science, 4.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 5.Kyushu University)

*Jun-ichiro Ishibashi¹, Shuhei Totsuka Shiiki^2,6, Yuki Inoue³, Yusuke Ohta⁴, Hideaki Machiyama⁵, Koichi Iijima⁵, Takafumi Kasaya⁵, Hidenori Kumagai⁵ (1.Kobe Univ. Ocean-bottom Exploration Center, 2.Geological Survey of Japan, AIST, 3.Graduate School of Science, Kyushu Univ., 4.Res. Ctr. for Seismology, Volcanology, Disaster Mitigation, Nagoya Univ., 5.Submarine Resources Res. Ctr., JAMSTEC, 6.Sumitomo Metal Mining Co., Ltd.)