*Mariko Honda¹, Kay I. Ohshima², Vigan Mensah², Masatoshi Sato³ (1.Graduate School of Environmental Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University, 3.Wakkanai Fisheries Research Institute, Hokkaido Research Organization)

*YenChen CHEN¹, Vigan Mensah², Kay I. Ohshima² (1.Graduate School of Environmental Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University)

*Vigan Mensah¹, Igor Yashayaev², Koji Fujita³, Stephen E. L. Howell⁴, Miho Ikeda⁵, Kay I. Ohshima^1,6 (1.Institute of Low Temperature Science, Hokkaido University, 2.Bedford Institute of Oceanography, Dartmouth, NS, Canada, 3.Graduate school of environmental studies, Nagoya University, 4.Climate Research Division, Environment and Climate Change Canada, Toronto, Canada, 5.Faculty of Science, Hokkaido University, 6.Arctic Research Center, Hokkaido University, Sapporo)

*Masashi Machida¹, Kay I. Ohshima², Daisuke Simizu³, Kazuki Nakata⁴, Mizuki Kuga², Vigan Mensah², Alexander Fraser⁵, Kohei Mizobata⁶, Takeshi Tamura³, Yasushi Fukamachi⁷ (1.Graduate School of Env. Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University, 3.National Institute of Polar Research, 4.Japan Aerospace Exploration Agency, 5.Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, 6.Tokyo University of Marine Science and Technology, 7.Arctic Research Center, Hokkaido University)

*Katsuro Katsumata¹, Shigeru Aoki², Kay I. Ohshima², Michiyo Yamamoto-Kawai³ (1.University of Tokyo, 2.Hokkaido University, 3.Tokyo University of Marine Science and Technologh)

*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)

*Sohey Nihashi¹, Kay I. Ohshima² (1.Tomakomai National College of Technology, 2.Institute of Low Temperature Science Hokkaido University)

*Keiko Takehara¹, Yuji Kato², Yoshihiro Nakayama³, Mutsumi Iizuka⁴, Xiangyu Zhao⁵, Takuya Itaki⁴, Yusuke Suganuma⁶, Vigan Mensah¹, Osamu Seki¹, Kay I. Ohshima¹, Minoru Ikehara² (1.Institute of Low Temperature Science, Hokkaido University, 2.Marine Core Research Institute, Kochi University, 3.Dartmouth College, 4.Geological Survey of Japan, AIST, 5.Shanghai Jiao Tong University, 6.National Institute of Polar Research)

*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)

*Kay I. Ohshima¹, Masato Maeno¹ (1.Institute of Low Temperature Science, Hokkaido University)

*Vigan Mensah¹, Yoshihiro Nakayama^1,2, Masakazu Fujii⁴, Kay I. Ohshima^1,3 (1.Institute of Low Temperature Science, Hokkaido University, 2.Engineering Faculty, Dartmouth College, NH, U.S.A, 3.Arctic Research Center, Hokkaido University, 4.National Institute of Polar Research)