*Yoshihiko Ohashi¹, Daisuke Hirano^1,2, Kohei Mizobata³, Kazuya Kusahara⁴, Kazuki Nakata⁵, Kazuya Ono⁶, Masakazu Fujii^1,2, Ryosuke Makabe^1,2, Kay I. Ohshima⁶, Takeshi Tamura^1,2, Shigeru Aoki⁶ (1.National Institute of Polar Research, 2.SOKENDAI, 3.Tokyo University of Marine Science and Technology, 4.Japan Agency for Marine-Earth Science and Technology, 5.Japan Aerospace Exploration Agency, 6.Hokkaido University)

*Yukiko Kozaka^1,2,3, Chandranath Basak¹, Keiji Horikawa⁴, Yoshihiko Ohashi⁵, Michiyo Yamamoto-Kawai⁶, Kay I. Ohshima⁷, Minoru Ikehara² (1.Department of Earth Sciences, University of Delaware, 2.Marine Core Research Institute, Kochi University, 3.Institute of Science and Engineering, Kanazawa University, 4.Faculty of Science, Academic Assembly, University of Toyama, 5.National Institute of Polar Research, 6.Tokyo University of Marine Science and Technology, 7.Institute of Low Temperature Science, Hokkaido University)