*Ayanori Misawa¹, Ryuta Arai², Masahiko Sato³, Saki Ishino¹, Misaki Horiuchi⁴, Keita Suzuki⁴, Chiori Tamura⁵, Katsura Kameo⁵, Satoshi Okumura⁶, Makoto Otsubo¹, KH-21-3 Shipboard Scientists (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology(AIST), 2.Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3.Department of Earth and Planetary Science, The University of Tokyo, 4.Nippon Marine Enterprises, Ltd., 5.Atmosphere and Ocean Research Institute, The University of Tokyo, 6.MOL Marine Co. Ltd.)

*Jun-ichiro Ishibashi¹, Takashi Miyamoto^1,3, Shuhei Totsuka^1,2, Kazuhiko Shimada¹, Toru Yamasaki², Ken Ikehara², Toshiro Nagase⁴, Yutaro Takaya⁵, Hideaki Machiyama⁶, Koichi Iijima⁶, Hirofumi Yamamoto⁶, Hidenori Kumagai⁶ (1.Department of Earth and Planetary Sciences, School of Science, Kyushu University, 2.National Institute of Advanced Industrial Science and Technology, 3.School of science, University of Tokyo, 4.Tohoku University Museum, 5.Waseda Research Institute for Science and Engineering, 6.Japan Agency for Marine-Earth Science and Technology)

*Masashi Mochizuki¹, Takeshi Nakamura², Ryoichi Iwase³, Kenji Uehira¹ (1.National Research Institute for Earth Science and Disaster Resilience, 2.Central Research Institute of Electric Power Industry, 3.Japan Agency for Marine-Earth Science and Technology)

*Hiroyuki Yamamoto¹, Tetsuya Miwa¹, Shinsuke Kawagucci¹, Sangkyun Lee², Atsuo Oono³, Kousuke Tsutsumi³, Hideki Sugishima³ (1.Japan Agency for Marine-Earth Science and Technology, 2.J-MARES/JGI, 3.J-MARES/idea)

*Claudia Sanchez¹, Osamu Kuwano², Mie Ichihara¹ (1.Earthquake Research Institute, Tokyo University , 2.JAMSTEC)

*Mikito Furuichi¹, Daisuke Nishiura¹, Yuzuru Yamamoto² (1.Japan Agency for Marine-Earth Science and Technology, 2.Kobe University)

*Masashi Tsuchiya¹, Tomo Kitahashi¹, Yosuke Taira², Hitoshi Saito², Kazumasa Oguri^1,3, Ryota Nakajima¹, Dhugal J. Lindsay⁴, Katsunori FUJIKURA¹, Tomohiko Fukushima^1,5 (1.Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, 2.NEC Corporation, 3.Danish Center for Hadal Research, University of Southern Denmark, 4.Institute for Extra-cutting-edge Science and Technology Avant-garde Research, Japan Agency for Marine-Earth Science and Technology, 5.Deep Ocean Resources Development Co., Ltd.)

*Tomoaki Kitayama¹, Takashi Hosono¹, Hideaki Saito¹ (1.Japan Agency for Marine-Earth Science and Technology)

*Manabu Nishizawa¹ (1.Japan Agency for Marine-Earth Science and Technology)

*Takehiro Hirose¹, Ryoichi Nakada¹, Keishi Okazaki¹, Takazo Shibuya¹ (1.Japan Agency for Marine-Earth Science and Technology)