*Takeshi Hanyu¹, Nobukazu Seama^2,3, Satoru Tanaka¹, Yoshiyuki Tatsumi^3,2, Shunsuke Abe², Morihisa Hamada¹, Tomoko Hanyu³, Hikaru Iwamaru³, Souko Kado², Katsuya Kaneko^2,3, Ryohei Kikuchi², Koji Kiyosugi³, Tetsuo Matsuno^3,2, Iona McIntosh¹, Takashi Miyazaki¹, Reina NAKAOKA³, Nobuyuki Okamoto³, Taiki Orii², Satoshi Shimizu³, Tsuyoshi Shintani⁴, Keiko Suzuki-Kamata^3,2, Maria Luisa Tejada¹, Kenta Ueki¹, Bogdan Stefanov Vaglarov¹ (1.Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics, 2.Kobe University, Graduate School of Science, 3.Kobe University, Kobe Ocean Bottom Exploration Center, 4.Osaka City University, Graduate School of Science)

*Satoshi Shimizu^1,2, Reina NAKAOKA¹, Nobukazu Seama^3,1, Tomoko Hanyu¹, Keiko Suzuki-Kamata^1,3, Koji Kiyosugi¹, Katsuya Kaneko^3,1, Tetsuo Matsuno¹, Hikaru Iwamaru^1,2, Takeshi Hanyu⁴, Shunsuke Abe⁵, Nobuyuki Okamoto^1,6, Yoshiyuki Tatsumi^1,3 (1.Kobe Ocean-Bottom Exploration Center, Kobe University, 2.Nippon Marine Enterprises, Ltd., 3.Department of Planetology, Graduate School of Science, Kobe University, 4.Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamincs, 5.Department of Planetology, Faculty of Science, Kobe University, 6.Japan, Oil, Gas and Metals National Corporation)

*IKEUCHI ERI¹, Akira Igichi¹, Hiroyuki Yokooka², Hideki Sugishima², Kazumasa Ikeda³, Ryuichi Miwa⁴, Miyuki Nishijima¹, Nozomu Iwasaki⁵, Yuichiro Tanaka¹, Taiga Kunishima^1,6, Shogo Kato⁷, Junpei Minatoya⁷, Yoshiaki Igarashi⁷, Nobuyuki Okamoto⁷, Atsushi Suzuki¹ (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.IDEA Consultants, Inc., 3.Okamoto Glass Co., Ltd., 4.Kaiyo Engineering Co., Ltd., 5.Faculty of Geo-Environmental Science, Rissho University, 6.Wakayama Prefectural Museum of Natural History, 7.Japan Oil, Gas and Metals National Corporation)

*Kyoko Yamaoka¹, Atsushi Suzuki¹, Yuki Ota¹, Yuichiro Tanaka¹, Akifumi Shimamoto², Tatsuo Fukuhara², Junpei Minatoya³, Shogo Kato³, Yoshiaki Igarashi³, Nobuyuki Okamoto³ (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.KANSO Co.,Ltd., 3.Japan Oil, Gas and Metals National Corporation (JOGMEC))