*Hidetoshi Mori¹, Akira Ishikawa¹, Tetsuya Yokoyama¹, Tetsu Kogiso², Norikatsu Akizawa³ (1.Department of Earth and Planetary Science, School of Science at Tokyo Institute of Technology , 2.Kyoto University, 3.Department of Ocean Floor Geoscience, Atomosphere and Ocean Reseach Institute, The University of Tokyo)

*Susumu Umino¹, Trinh Nguyen¹, Akihiro Tamura¹, Yuki Kusano², Norikatsu Akizawa³, Osamu Ishizuka², Takahiro Fudai⁶, Sumio Miyashita⁴, Yoshiko Adachi⁵, Tomoaki Morishita¹ (1.School of Geosciences and Civil Engineering, Kanazawa University, 2.Geological Survey of Japan, AIST, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Hokkaido Research Center of Geology, 5.Central Research Institute of Electric Power Industry (CRIEPI), 6.Taiheiyo Cement)

*Masaharu Aketa¹, Akira Miyake¹, Norikatsu Akizawa², Megumi Matsumoto³, Yohei Igami¹ (1.Kyoto University , 2.University of Tokyo, 3.Tohoku University)

*Yasuhiko Ohara^1,2,3, Yumiko Harigane⁴, Masakazu Fujii⁵, Norikatsu Akizawa¹¹, Valentin Basch¹⁰, Carlotta Ferrando¹², Ikuo Katayama⁷, Katsuyoshi Michibayashi³, Akito Ogawa^8,2, Aya Takeuchi⁹, Makoto Takeuchi¹¹, Chiori Tamura¹¹, Ko Tomikawa⁷, Shun Watanabe⁹, Hiroyuki Yamashita⁶, KH-23-9 Onboard Students (1.Hydrographic and Oceanographic Department of Japan, 2.Japan Agency for Marine-Earth Science and Technology, 3.Nagoya University, 4.Geological Survey of Japan/AIST, 5.National Institute of Polar Research, 6.Kanagawa Prefectural Museum of Natural History, 7.Hiroshima University, 8.National Museum of Nature and Science, 9.Kindai University, 10.CNR, 11.AORI, 12.University of Genoa)

*Norikatsu Akizawa¹, Ito Kengo², Sota Niki², Takafumi Hirata², Kyoko Okino¹, Yasuhiko Ohara^3,4,5 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Geochemical Research Center, The University of Tokyo, 3.Hydrographic and Oceanographic Department of Japan, 4.JAMSTEC, 5.Nagoya University)

*Teruaki Ishii¹, Naoto HIRANO², Norikatsu AKIZAWA³, Makoto KANEKO⁴, Shiki MACHIDA⁵ (1.Center for Integrated Research and Education of Natural Hazards, Sizuoka University, 2.Tohoku University, 3.The University of Tokyo, 4.Fukada Geological Institute, 5.Chiba Institute of Technology)

*Makoto Sano¹, Naoto Hirano¹, Satoshi Okumura¹, Norikatsu Akizawa², Akihiro Tamura³, Tomoaki Morishita³ (1.Tohoku University, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.Kanazawa University)

*Yuka Niwa¹, Norikatsu Akizawa², Akira Ishikawa¹ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Dyuti Prakash Sarkar¹, Norikatsu Akizawa², Jun-ichi Ando¹, Masako Yoshikawa¹ (1.Hirosima University, Earth and Planetary Systems Science, Higashi-Hiroshima, Japan, 2.University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan)