*Jun-ichi KIMURA¹, Yoshitaka NAGAHASHI², Yasufumi SATOGUCHI³, Qing CHANG¹ (1.JAMSTEC, 2.Fukushima University, 3.Lake Biwa Museum)

*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)

*Yoshio INOUCHI¹, Kazuyoshi YAMADA², Makoto OKAMURA³, Hiromi MATSUOKA³, Yasufumi SATOGUCHI⁴ (1.Faculty of Human Sciences, Waseda University, 2.Museum of Natural and Environmental history, Shizuoka, 3.Kochi University, 4.Lake Biwa Museum)