*Takuya SAGAWA¹, Ryuji TADA², Ken IKEHARA³, Tomohisa IRINO⁴, Takuya ITAKI³, Saiko SUGISAKI², Yoshimi KUBOTA⁵, Akinori KARASUDA², Xuan Chuang⁶, Yoshitaka NAGAHASHI⁷, Yasufumi SATOGUCHI⁸, Takeshi NAKAGAWA⁹, Richard W. Murray¹⁰, Carlos A. Alvarez-Zarikian¹¹, 346, Scientists EXPEDITION¹¹ (1.Faculty of Sciences, Kyushu University, 2.Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo, 3.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Techn, 4.Faculty of Environmental Earth Science, Hokkaido University, 5.National Museum of Nature and Science, 6.School of Ocean and Earth Science, Univ. of Southampton, 7.Fukushima University, 8.Lake Biwa Museum, 9.Ritsumeikan University, 10.Earth & Environment, Boston University, USA, 11.Integrated Ocean Discovery Program, Texas A&M University)

*Yusuke OKAZAKI¹, Takuya SAGAWA¹ (1.Kyushu University)

*Michinobu KUWAE¹, Mako KIYOTO¹, Takuya SAGAWA², Masanobu YAMAMOTO³, Yugo NAKAMURA⁴, Yukinori TANI⁵, Narumi TSUGEKI⁶, Hiroji OHNISHI⁷, Minoru IKEHARA⁸ (1.Center for Marine Environmental Studies, 2.Faculty of Sciences, Kyushu University, 3.Faculty of Environmental Earth Science, Hokkaido University, 4.Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University, 5.Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, 6.Matsuyama University The Faculty of Law, 7.Graduate School of Fisheries Sciences, Hokkaido University, 8.Center for Advanced Marine Core Research , Kochi Univ)