*Koji Seike^1,2, Atsushi Suzuki¹, Yuki Ota³, Jumpei Minatoya⁴ (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 2.Department of Natural Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo, 3.Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 4.Japan Oil, Gas and Metals National Corporation (JOGMEC))

*Akira Iguchi^1,2, Miyuki Nishijima¹, Eri Ikeuchi^1,2, Taiga Kunishima³, Hiroyuki Yokooka⁴, Hideki Sugishima^5,6, Kazumasa Ikeda⁵, Ryuichi Miwa⁶, Yoshiro Sekido⁷, Nozomu Iwasaki⁸, Masahiro Suzumura⁹, Ayumi Tsukasaki⁹, Yuichiro Tanaka¹, Shogo Kato⁴, Jumpei Minatoya¹⁰, Nobuyuki Okamoto¹⁰, Travis Washburn¹, Atsushi Suzuki^1,2 (1.Geological Survery of Japan, National Institute of Advanced Industrial Science and Technology, 2.Research Laboratory on Environmentally-conscious Developments and Technologies [E-code], AIST, 3.Wakayama Prefectural Museum of Natural History, 4.IDEA Consultants, Inc., 5.Okamoto Glass Co., Ltd., 6.Kaiyo Engineering Co., Ltd., 7.Marine Biological Research Institute of Japan Co., Ltd., 8.Faculty of Geo-Environmental Science, Rissho University, 9.Environmental Management Research Institute, AIST, 10.Japan Oil, Gas and Metals National Corporation)

*Hiroki Kise¹, AKIRA IGUCHI^1,2, TAKUJI IKEGAMI³, YOSUKE ONISHI³, KOICHI GOTO³, YUICHIRO TANAKA¹, TRAVIS W. WASHBURN¹, MIYUKI NISHIJIMA¹, TAIGA KUNISHIMA^1,4, SHOGO KATO⁵, TAKAAKI MATSUI⁶, NOBUYUKI OKAMOTO⁷, ATSUSHI SUZUKI^1,2 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 2.Research Laboratory on Environmentally-conscious Developments and Technologies [E-code], National Institute of Advanced Industrial Science and Technology (AIST), 3.KANSO CO., LTD, 4.Wakayama Prefectural Museum of Natural History, 5.IDEA Consultants, Inc., 6.Marine Biological Research Institute of Japan CO., LTD, 7.Japan Oil, Gas and Metals National Corporation (JOGMEC))

*Travis William Washburn¹, Akira Iguchi¹, Kyoko Yamaoka¹, Yosuke Onishi², Nobuyuki Okamoto^3,4, Atsushi Suzuki¹ (1.National Institute of Advanced Industrial Science and Technology, 2.KANSO Co., LTD, 3.Japan Oil, Gas and Metals National Corporation, 4.Kobe University)

*Takashi Ito¹, Takanori Nakano², Akira Usui³ (1.Faculty of Education, Ibaraki University, 2.Research Institute for Humanity and Nature, 3.Marine Core Research Center, Kochi University)

*Akira Usui¹, Kyoko Yamaoka², Teruhiko Kashiwabara³, Hikari Hino⁴ (1.Marine Core Research Center, Kochi University, 2.Geological Survey of Japan, AIST, 3.Japan Agency for Earth-Marine Science and Technol, 4.Graduate School of Integrated Arts & Sciences, Kochi University)

*Hikari Hino^1,2, Akira Usui³ (1.Japan Oil, Gas and Metals National Corporation, 2.Graduate School of Integrated Arts and Sciences, Kochi University, 3.Center for Advanced Marine Core Research, Kochi University)

*Tasuku Kamei¹, Masafumi Murayama², Akira Usui³ (1.Agriculture and Marine Science Program,Graduate School of Jntegrated Arts and Sciences,Kochi University, 2.Faculty of Agriculture and Marine Science, Kochi University , 3.Marine Core Research Center, Kochi University)

*Hirokuni Oda¹, Wataru Katanoda^1,2, Masafumi MURAYAMA², Akira Usui² (1.Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, 2.Kochi University)

*Makoto Yazaki¹, Kentaro Nakamura^1,2, Shiki Machida², Kazutaka Yasukawa^3,1, Koichiro Fujinaga^2,3, Yasuhiro Kato^3,1,2 (1.Department of Systems Innovation, the University of Tokyo, 2.ORCeNG, Chiba institute of technology, 3.FRCER, the University of Tokyo)