*Tomomi Yamane¹, Keiko Suzuki-Kamata² (1.Graduate School of Science, Kobe University, 2.Kobe Ocean-Bottom Exploration Center)

*Izumi Sato¹, Tomozo Ono¹, Taisei Morishita¹, Shogo Hamasaki¹, Hitomi Takahashi¹, Kenji Nogami² (1.Hydrographic and Oceanographic Department, Japan Coast Guard, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Masataka Kawaguchi¹, Toshiaki Hasenaka¹, ATSUSHI YASUDA², Natsumi Hokanishi², Yasushi Mori³ (1.Graduate school of science and technology, Kumamoto University, 2.Earthquake Reserch Institute, the University of Tokyo, 3.Kitakyushu Museum of Natural History and Human History)

*Chiyo Harada¹, Tsuyoshi Iizuka¹, Morihisa Hamada², Mitsuhiro Yoshimoto³, ATSUSHI YASUDA⁴ (1.Department of earth and planetary science, University of Tokyo, 2.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Science and Technology, 3.Mount Fuji Research Institute, Yamanashi Prefectural Government, 4.Earthquake Research Institute, University of Tokyo)

*Takeshi Kuritani^1,2, Tetsuya Sakuyama², Natsumi Kamada², Tetsuya Yokoyama³, Mitsuhiro Nakagawa¹ (1.Graduate School of Science, Hokkaido University, 2.Faculty of Science, Osaka City University, 3.School of Science, Tokyo Institute of Technology)

*Shigeru Yamashita¹ (1.Institute for Planetary Materials, Okayama University)

*Tetsuji Muto¹ (1.Department of Environmental Science, Nagasaki University)

Kei Kojima¹, *Hiroaki Sato², Keiko Suzuki-Kamata³, Eiichi Sato⁴ (1.Dept Earth Plan Sci, Fac of Science, Kobe Univ, Present address: Insource co., 2.Dept Earth Plan Sci, Grad Sch Sci, Kobe Univ, 3.Dept of Planetary Sci, Graduate School of Sci., Kobe Univ, 4.Inst for Promotion of Higher Education, Kobe Univ)

*Masataka Aizawa¹, Satoshi Okamura¹, Toshiro Takahashi², (Group) Yoneyama Research Group (1.Hokkaido Education University, Sapporo Campus, 2.Faculty of Science, Niigata University)

*Minami Yabe¹, Masahiko Arakawa¹, Minami Yasui¹ (1.Department of Planetology, Graduate School of Science, Kobe University)