*Shohei Hattori¹ (1.Nanjing University)

*Kaoru Kawakami¹, Yoshinori Iizuka¹, Mahiro Sasage^1,2, Mai Matsumoto^1,2, Takeshi Saito¹, Akira Hori³, Sakiko Ishino⁴, Shuji Fujita^5,6, Koji Fujita⁷, Keita Takasugi³, Takumi Hatakeyama⁸, Saaya Hamamoto⁷, Akihisa Watari, Nao Esashi⁷, Miu Otsuka, Ryu Uemura⁷, Kazuho Horiuchi⁸, Masahiro Minowa¹, Shohei Hattori⁹, Teruo Aoki^5,6, Motohiro Hirabayashi⁵, Kenji Kawamura^5,6,10, Sumito Matoba¹ (1.Institute of Low Temperature Science, Hokkaido University,, 2.Graduate School of Environmental Science, Hokkaido University, 3.Kitami Institute of Technology, 4.Institute of Nature and Environmental Technology, Kanazawa University, 5.National Institute of Polar Research, 6.Department of Polar Science, The Graduate University of Advanced Studies, SOKENDAI, 7.Graduate School of Environmental Studies, Nagoya University, 8.Graduate School of Science and Technology, Hirosaki University, 9.International Center for Isotope Effects Research, School of Earth Sciences and Engineering, Nanjing University, 10.Japan Agency for Marine Science and Technology)

*Saki Tsuboi¹, Sakiko Ishino¹, Kaoru Kawakami², Shohei Hattori³, Takuya Sagawa¹, Sumito Matoba⁴, Iizuka Yoshinori⁴ (1.Kanazawa University, 2.Graduate School of Environmental Science, Hokkaido University, 3.Nanjing University, 4.Institute of Low Temperature Science, Hokkaido University)

Masako Kagawa¹, *Nagayoshi Katsuta¹, Sayuri Naito¹, Yuma Masuki², Hitoshi CHIBA³, Shohei Hattori⁴, Chikage Yoshimizu⁵, Ichiro Tayasu⁵ (1.Faculty of Education, Gifu University, 2.Graduate School of Natural Science and Technology, 3.Department of Earth Sciences, Okayama University, 4.Nanjing University, 5.Research Institute for Humanity and Nature)

*Shohei Hattori¹ (1.Nanjing University)