*Yohei Hamada¹, Wataru Tanikawa¹, Yuhji Yamamoto², Go-Ichiro Uramoto², Masafumi MURAYAMA², Takehiro Hirose¹, Osamu Tadai^1,3, Kouki Tanaka², Hiromasa Ozaki⁴, Minoru YONEDA⁴, Hidekazu Tokuyama² (1.Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research, 2.Kochi University, 3.Marine Works Japan Ltd., 4.Tokyo University)

*Masafumi MURAYAMA¹, Wataru Tanikawa², Akira Ijiri², Tatsuhiko Hoshino², Takehiro Hirose², Toshiya Fujiwara², Kazuya Kitada², Kastuya Nejigaki³, Tokuyama Hidekazu⁴, Go-Ichiro Uramoto⁴, Kazuno Arai⁴, Kondo Yasuo³, Yuhji Yamamoto⁴, Research Member Kurodagoori⁴ (1.Faculty of Agriculture and Marine Science, Kochi University, 2.JAMSTEC, 3.Graduate School of Integrated Arts and Sciences, Kochi University, 4.Center for Advanced Marine Core Research, Kochi University)

*Kohei Masaoka¹, Yuki Morono², Naotaka Tomioka², Go-Ichiro Uramoto¹, Yuhji Yamamoto¹ (1.Kochi University, 2.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)

*Go-Ichiro Uramoto¹, Hiroki Matsui¹, Kazuno Arai¹, Naohisa Nishida², Hirofumi Asahi¹, Yusuke Kubo³, Satoshi Tonai¹, Wataru Tanikawa³, Yurika Ujiie¹, Yuhji Yamamoto¹, Minoru Ikehara¹ (1.Kochi University, 2.Tokyo Gakugei University, 3.Japan Agency for Marine-Earth Scienct and Technology (JAMSTEC))