*Kumiko Goto-Azuma^1,2, Nobuhiro Moteki³, Kaori Fukuda¹, Jun Ogata¹, Tatsuhiro Mori³, Sho Ohata⁴, Yutaka Kondo¹, Makoto Koike³, Motohiro Hirabayashi¹, Kyotaro Kitamura¹, Ayaka Yonekura², Shuji Fujita^1,2, Fumio Nakazawa^1,2, Yoshimi Ogawa¹, Kenji Kawamura^1,2 (1.National Institute of Polar Research, 2.SOKENDAI (The Graduate University for Advanced Studies), 3.The University of Tokyo, 4.Nagoya University, Japan)

*Shun Tsutaki¹, Shuji Fujita^1,2, Kenji Kawamura^1,2,3, Ayako Abe-Ouchi^1,4, Kotaro FUKUI⁵, Hideaki Motoyama^1,2, Yu Hoshina⁶, Fumio Nakazawa^1,2, Takashi Obase⁴, Hiroshi Ohno⁷, Ikumi Oyabu¹, Fuyuki SAITO³, Konosuke Sugiura⁸, Toshitaka Suzuki⁹ (1.National Institute of Polar Research, 2.SOKENDAI, 3.JAMSTEC, 4.The University of Tokyo, 5.Tateyama Caldera Sabo Museum, 6.Nagoya University, 7.Kitami Institute of Technology, 8.University of Toyama, 9.Yamagata University)

*Ayaka Yonekura¹, Kenji Kawamura^1,2,3, Ikumi Oyabu², Kyotaro Kitamura², Jun Ogata², Motohiro Hirabayashi², Kaori Fukuda², Yoshimi Tsukagawa², Tomotaka Saruya², Fumio Nakazawa^1,2, Shuji Fujita^1,2, Kumiko Goto-Azuma^1,2, Hideaki Motoyama^1,2 (1.The Graduate University for Advanced Studies, SOKENDAI, 2.National Insutitute of Polar Research, 3.JAMSTEC)

*Ryo Inoue¹, Teruo Aoki^2,1, Shuji Fujita^2,1, Kenji Kawamura^2,1,3, Shun Tsutaki², Hideaki Motoyama^2,1, Fumio Nakazawa^2,1 (1.The Graduate University for Advanced Studies, 2.National Institute of Polar Research, 3.Japan Agency for Marine-Earth Science and Technology)