*Natsumi Okutsu¹, Juichiro Ashi¹, Akiko Omura¹, Asuka Yamaguchi¹, Yusuke Suganuma², Masafumi MURAYAMA³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.National institute of Polar Research, 3.Center for Advanced Marine Core Research, Kochi University)

*Juichiro Ashi¹, Asuka Yamaguchi¹, Rina Fukuchi¹, Akihiro Ohde¹, Natsumi Okutsu¹, Yu Tabuchi², Ken Ikehara³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Kochi University, 3.AIST)

*Motoyuki Kido¹, Juichiro Ashi², Takeshi Tsuji³, Fumiaki Tomita⁴ (1.International Research Institute for Disaster Science, Tohoku University, 2.Atmosphere and Ocean Research Institute, University of Tokyo, 3.International Institute for Carbon-Neutral Energy Research, 4.Graduate School of Science, Tohoku University)

*Tatsuhiko Hoshino^1,2, Tomohiro Toki³, Akira Ijiri^1,2, Yuki Morono^1,2, Hideaki Machiyama², Juichiro Ashi⁴, Fumio Inagaki^2,1 (1.Kochi Institute for Core Sample Research, Japan Agency for Marine Science and Technology, 2.Research and Development Center for Submarine Resources, Japan Agency for Marine Science and Technology, 3.Faculty of Science, University of the Ryukyus, 4.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Akira Ijiri^1,2, Tomohiro Toki³, Ko Agena³, Tatsuhiko Hoshino^1,2, Hideaki Machiyama², Juichiro Ashi⁴, Fumio Inagaki^1,2 (1.Kochi Institute for Core Sample Research, Japan Agency for Marine Science and Technology (JAMSTEC), 2.Research and Development Center for Submarine Resources, JAMSTEC, 3.Faculty of Science, University of the Ryukyus, 4.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Asuka Yamaguchi¹, Kazuno Arai², Ken Ikehara³, Toshiya Kanamatsu², Rina Fukuchi¹, Yasuyuki Nakamura², Kazuko Usami³, Natsumi Okutsu¹, Koji Seike¹, Juichiro Ashi¹ (1.Atomosphere and Ocean Research Institute, The University of Tokyo, 2.R&D Center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3.Research Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology (AIST))

*Toshiya Kanamatsu¹, Juichiro Ashi², Ken Ikehara³, KH-15-2 Leg3 scientific party (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology)

*Rina Fukuchi^1,2, Asuka Yamaguchi¹, Jun Kameda⁴, Gaku Kimura³, Juichiro Ashi^1,2 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Graduate School of Frontier Sciences, The University of Tokyo, 3.Department of Earth and Planetary Science of the Graduate School of Science, The University of Tokyo, 4.Earth and Planetary System Science Department of Natural History Sciences, Graduate School of Science, Hokkaido University)

*Akiko Omura¹, Yosuke Miyairi², Shoko Hirabayashi³, Yusuke Yokoyama², Juichiro Ashi² (1.JSPS Research Fellow, University of Tokyo, 2.AORI, University of Tokyo, 3.Graduate School of Science, University of Tokyo)

*Kazuhiro Yagasaki¹, Juichiro Ashi¹, Yusuke Yokoyama¹, Yosuke Miyairi¹, Shin'ichi Kuramoto² (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Center for Deep Earth Exploration, JAMSTEC)

*Rina Fukuchi^1,2, Asuka Yamaguchi¹, Yuzuru Yamamoto³, Juichiro Ashi^1,2 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Graduate School of Frontier Sciences, The University of Tokyo, 3.JAMSTEC)