*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))

*Hiroki Matsui¹, Minoru Ikehara¹, Yusuke Suganuma^2,3, Osamu Seki⁴, Jun'ichi Okuno^2,3, Ikumi Oyabu², Kenji Kawamura^2,3 (1.Center for Advanced Marine Core Research, Kochi University, 2.National Institute of Polar Research, 3.Department of Polar Science, School of Multidisciplinary Sciences, The Graduate University for Advanced Studies (SOKENDAI), 4.Institute of Low Temperature Science, Hokkaido University)