*Satoru Haraguchi¹, Koichiro Fujinaga^2,3, Kentaro Nakamura³, Asuka Yamaguchi⁴, Teruaki Ishii⁵ (1.Japan Agency for Marine-Earth Science and Technology, 2.Chiba Institute of Technology, 3.Faculty of Engineering, University of Tokyo, 4.Atmosphere and Ocean Research Institute, 5.Fukada Geological Institute)

*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)

*Kentaro Nakamura¹, Kazutaka Yasukawa¹, Koichiro Fujinaga¹, Yasuhiro Kato^1,2,3 (1.Department of Systems Innovation, School of Engineering, The University of Tokyo, 2.Frontier Research Center for Energy and Resources (FRCER), School of Engineering, The University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*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)

*Kazutaka Yasukawa^1,2, Kentaro Nakamura¹, Koichiro Fujinaga^2,1, Junichiro Ohta^3,1, Hikaru Iwamori^3,4, Yasuhiro Kato^1,2,3 (1.School of Engineering, The University of Tokyo, 2.Chiba Institute of Technology, 3.JAMSTEC, 4.Department of Earth and Planetary Sciences, Tokyo Institute of Technology)

*Junichiro Ohta^1,2, Kentaro Nakamura², Kazutaka Yasukawa^2,3, Koichiro Fujinaga^3,2, Koichi Iijima¹, Hikaru Iwamori^1,4, Yasuhiro Kato^2,1,3 (1.Japan Agency for Marine-Earth Science and Technology, 2.School of Engineering, the University of Tokyo, 3.Chiba Institute of Technology, 4.Graduate School of Engineering, Tokyo Institute of Technology)

*Erika Tanaka¹, Kazutaka Yasukawa^1,2, Kentaro Nakamura¹, Takashi Miyazaki³, Junichiro Ohta³, Koichiro Fujinaga^2,1, Hikaru Iwamori^3,4, Yasuhiro Kato^1,3 (1.School of Engineering, The University of Tokyo, 2.Chiba Institute of Technology, 3.JAMSTEC, 4.Department of Earth & Planetary Sciences, Tokyo Institute of Technology)

*Shumpei Murakami¹, Koichiro Fujinaga^2,1, Junichiro Ohta^3,1, Kazutaka Yasukawa^1,2, Kentaro Nakamura¹, Yasuhiro Kato^1,2,3, Kurokawa Kyouhei⁴, Hikaru Iwamori^3,5, Nagaishi Kazuya⁶, Tsuyoshi Ishikawa³ (1.School of Engineering the University of Tokyo, 2.Chiba Institute of Technology, 3.JAMSTEC, 4.Mitsui Kushikino Mining Co., Ltd., 5.Tokyo Institute of Technology, 6.Marine Work Japan Co., Ltd.)

*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)

*Yutaro Takaya^1,2,3, Koichiro Fujinaga^4,3,2, Yasuhiro Kato^3,2 (1.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 2.Research and Development (R&D) Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology, 3.Department of Systems Innovation, Graduate School of Engineering, University of Tokyo, 4.Chiba Institute of Technology)

*Kazutaka Yasukawa^1,2, Kentaro Nakamura¹, Koichiro Fujinaga^2,1, Hikaru Iwamori^3,4, Yasuhiro Kato^1,2,3 (1.School of Engineering, The University of Tokyo, 2.Chiba Institute of Technology, 3.JAMSTEC, 4.Department of Earth and Planetary Sciences, Tokyo Institute of Technology)