*Keishiro Azami¹, Naoto Hirano², Shiki Machida³, Kazutaka Yasukawa^4,5, Yasuhiro Kato^4,5,3 (1.Graduate school of science, Tohoku Univercity, 2.Center for Northeast Asian Studies, Tohoku University, 3.Japan Agency for Marine-Earth Science and Technology, 4.School of Engineering, The University of Tokyo, 5.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology)

*Junji Akai¹ (1.Niigata University)

*Michinari Sunamura¹ (1.University of Tokyo Dept. of Earth & Planetary Science)

*ERI SHIMIZU¹, Akira Usui¹ (1.Kochi University)

*yaita yuusuke¹, kumiko ichige¹, takaaki shinoda¹, Takashi Ito¹ (1.Ibaraki University)

*Kyoko Yamaoka¹, Akira Usui^2,1 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Centre for Advanced Marine Core Research, Kochi University)

*Hironori Takahashi¹, Hirokuni Oda², Akira Usui³, Takashi Ito¹ (1.Ibaraki University, 2.National Institute of Advanced Industrial Science and Technology, 3.Kochi University)

*Yuya Tsukamoto¹, Takeshi Kakegawa¹ (1.Graduate School of Science,Tohoku University)

*Tetsuo Yamazaki¹, Kana Kuroda¹, Naoki Nakatani¹, Rei Arai¹ (1.Osaka Prefecture University)