*Takuya ITAKI¹, Isao MOTOYAMA², Yasumi YAMADA³, Kenji M. MATSUZAKI¹, Ken IKEHARA¹, Ryuji TADA⁴ (1.Geological Survey of Japan / AIST, 2.Department of Earth and Environmental Sciences, Yamagata University, 3.Marine Works Japan Ltd, 4.Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo)

*Susumu KONNO¹, Sei-ichiro SUGA¹, Yusuke OKAZAKI¹, Hirofumi ASAHI², Akemi FUKUMURA³, Kenji M. MATSUZAKI⁴, Itsuki SUTO⁵ (1.Graduate School of Sciences, Kyushu University, 2.Korea Polar Research Institute, 3.Hokkaido university, 4.Geological Survey of Japan, AIST, 5.Graduate School of Environmental Studies, Nagoya University)

*Kenji M. MATSUZAKI¹, Hirofumi ASAHI², Akemi FUKUMURA³, Susumu KONNO⁴, Itsuki SUTO⁵ (1.Geological Survey of Japan, AIST, 2.Korea Polar Research Institute, 3.Hokkaido University Graduate School of Science, 4.Kyushu University Graduate School of Science, 5.Nagoya University Graduate School of Environmental Studies)

*Hiroki HAYASHI¹, Kenji M. MATSUZAKI², Hiroshi NISHI³, Minoru IKEHARA⁴ (1.Shimane University, 2.AIST, 3.Tohoku University, 4.Kochi University)