*Akira Ijiri¹, Yohei Hamada¹, Tomohiro Toki², Ko Agena², Tatsuhiko Hoshino¹, Kyoko Hagino³, Hideaki Machiyama¹, Juichiro Ashi⁴, Fumio Inagaki¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.University of the Ryukyus, 3.Kochi University, 4.The University of Tokyo)

*Tatsuhiko Hoshino^1,2, Yousuke Taira³, Hitoshi Saitou³, Kyoko Hagino⁴, Jonaotaro Onodera⁵, Takuya Itaki⁶, Tatsuhiko Yamaguchi⁴, Fumio Inagaki^1,2,7 (1.Kochi Institute for Core Sample Research, JAMSTEC, 2.Research and Development Center for Submarine Resources, JAMSTEC, 3.NEC Corporation, 4.Center for Advanced Marine Core Research, Kochi University, 5.Research and Development Center for Global Change, JAMSTEC, 6.Marine Geology Research Group, AIST, 7.Research and Development Center for Ocean Drilling Science, JAMSTEC)

*Junichiro Kuroda^1,2, Saneatsu Saito², Yoichi Usui², Kyoko Hagino³, KanHsi Hsiung², Masafumi MURAYAMA³, Takuto Ando⁴, Naohiko Ohkouchi² (1.Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology, 3.Center for Advanced Marine Core Research, Kochi University, 4.Arctic Research Center, Hokkaido University)