*Kyoko Okino¹, Nobukazu Seama², Michinari Sunamura³, Shiki Machida⁴, KH-15-5 scientific team (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Kobe University, 3.The University of Tokyo, 4.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*Hirochika Sumino¹, Masahiro Kobayashi², Ray Burgess³, Lisa Jepson³, Shiki Machida⁴, Aya Shimizu⁵, David Hilton⁶, Chris Ballentine⁷ (1.Dept. Basic Science, Univ. Tokyo-Komaba, 2.GCRC, Grad. Sch. Sci., Univ. Tokyo, 3.SEAES, Univ. Manchester, 4.JAMSTEC, 5.Tokyo Metro. Ind. Tec. Res. Inst., 6.Scripps Inst. Ocean., UC San Diego, 7.Dept. Earth Sciences, Univ. Oxford)

*Kohei Tominaga¹, Ken-ichiro Hisada², Hidetsugu Taniguchi³, Shiki Machida⁴, Kazutaka Yasukawa⁵, Yasuhiro Kato⁶ (1.Master's Program in Geoscience, Graduate School of Life and Environmental Sciences, University of Tsukuba, 2.Division of Earth Evolution Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, 3.Faculty of Science, Josai University, 4.Ore Genesis Research Unit, Project Team for Research and Development of Next-generation Research Protocol for Submarine Resources, Japan Agency for Marine-Earth Science and Tchnology, 5.Department of Systems Innovation, School of Engineering, the University of Tokyo, 6.Frontier Research Center for Energy and Resources, School of Engineering, The University of Tokyo)

*Yasuhiro Kato^1,2,3, Koichiro Fujinaga^3,1, Kentaro Nakamura^1,2, Kazutaka Yasukawa^1,3, Junichiro Ohta¹, Yutaro Takaya^4,1, Koichi Iijima², Shiki Machida^2,1, Tatsuo Nozaki^2,1, Jun-Ichi Kimura², Katsuhiko Suzuki², Hikaru Iwamori^2,5 (1.Department of Systems Innovation, Graduate School of Engineering, University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology, 3.Chiba Institute of Technology, 4.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 5.Tokyo Institute of Technology)

*Koichiro Fujinaga^1,2, Kazutaka Yasukawa^2,1, Shiki Machida^3,2, Tatsuo Nozaki^3,2, Yutaro Takaya^4,2, Junichiro Ohta², Kazutaka Oya², Daiki Niikuma⁴, Yoshiro Nishio⁵, Yuka Masaki³, Yoichi Usui³, Satoru Haraguchi³, Koichi Iijima³, Hiroshi Amakawa³, Katsuhiko Suzuki³, Kentaro Nakamura^2,3, Yasuhiro Kato^2,3,1, MR15-E02 Leg.2 cruise members (1.Chiba Institute of Technology, 2.Department of Systems Innovation, School of Engineering, University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology, 4.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 5.Research and Education Faculty, Kochi University)

*Kazuhide Mimura¹, Kentaro Nakamura¹, Kazutaka Yasukawa^1,3, Junichiro Ohta^2,1, Koichiro Fujinaga^3,1, Shiki Machida², Yasuhiro Kato^1,2,3 (1.School of Engineering, the University of Tokyo, 2.JAMSTEC, 3.Chiba Institute of Technology)