*Hideo Oyagi¹, Kazuyoshi Asai⁸, Seiki Igarashi⁴, Hiroshi Kobayashi⁷, Akinori Takeuchi², Tatsuya Fukazawa⁵, Shin Fujie³, Hirotsugu Minami⁶, Atsushi Tanaka² (1.Department of Earth and Environmental Sciences, College of Humanities and Sciences Nihon University, 2.Natl. Inst. for Environ. Studies, 3.Teshikaga Natural History Res. Soc., 4.Hokkaido Res. Organization, 5.Hokkaido Univ., 6.Kitami Inst. of Tec., 7.Yamanashi Univ., 8.Geo Schience Laboratory)

*Hideo Oyagi¹, Kazuyoshi Asai⁸, Seiki Igarashi⁴, Hiroshi Kobayashi⁷, Akinori Takeuchi², Tatsuya Fukazawa⁵, Shin Fujie³, Hirotsugu Minami⁶, Atsushi Tanaka² (1.Department of Earth and Environmental Sciences, College of Humanities and Sciences Nihon University, 2.Natl. Inst. for Environ. Studies, 3.Teshikaga Natural History Res. Soc., 4.Hokkaido Res. Organization, 5.Hokkaido Univ., 6.Kitami Inst. of Tec., 7.Yamanashi Univ., 8.Geo Schience Laboratory)

*Yuki KIkuchi¹, Akihiro Hachikubo¹, Oleg Khlystov², Gennadiy Kalmychkov³, Marc De Batist⁴, Young K. Jin⁵, Anatoly Obzhirov⁶, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹ (1.Kitami Institute of Technology, 2.Limnological Institute, SB RAS, 3.Vinogradov Institute of Geochemistry, SB RAS, 4.Ghent University, 5.Korea Polar Research Institute, 6.Pacific Oceanological Institute, FEB RAS)

*Takahiro Ozeki¹, Akihiro Hachikubo¹, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹, Kenji Nishina² (1.Kitami Institute of Technology, 2.Geological Survey of Hokkaido, Hokkaido Research Organization)

*Akihiro Hachikubo¹, Keito Kakizaki¹, Hayato Okuda¹, Oleg Khlystov², Gennadiy Kalmychkov³, Andrej Manakov⁴, Marc De Batist⁵, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹ (1.Kitami Institute of Technology, 2.Limnological Institute, SB RAS, 3.Vinogradov Institute of Geochemistry, SB RAS, 4.Nikolaev Institute of Inorganic Chemistry, SB RAS, 5.Ghent University)

*NIWA TATSUYA¹, Satoshi Yamashita¹, Akihiro Hachikubo¹, Masaaki Konishi¹, Hirotoshi Sakagami¹, Kenji Nishina², Hirotsugu Minami¹ (1.Kitami Institute of Technology, 2.Geological Survey of Hokkaido, Hokkaido Research Organization)

*Kazui Sukawa¹, Akihiro Hachikubo¹, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹, Nobuo Takahashi¹, Hitoshi Shoji¹, Young K Jin², Boris Baranov³, Anatoly Obzhirov⁴, Masaaki Konishi¹ (1. Kitami Institute of Technology, 2.Korea Polar Research Institute, Korea, 3.P. P. Shirshov Institute of Oceanology, RAS, Russia, 4. V. I. Il’ichev Pacific Oceanological Institute FEB RAS, Russia)

*Akihiro Hachikubo¹, Keito Kakizaki¹, Jumpei Matsuda¹, Kinji Hyakutake¹, Masaaki Konishi¹, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹, Kenji Nishina² (1.Kitami Institute of Technology, 2.Geological Survey of Hokkaido, Hokkaido Research Organization)

*Yuki KIkuchi¹, Akihiro Hachikubo¹, Oleg Khlystov², Gennadiy Kalmychkov³, Marc De Batist⁴, Young K. Jin⁵, Anatoly Obzhirov⁶, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹ (1.Kitami Institute of Technology, 2.Limnological Institute, SB RAS, 3.Vinogradov Institute of Geochemistry, SB RAS, 4.Ghent University, 5.Korea Polar Research Institute, 6.Pacific Oceanological Institute, FEB RAS)

*Takahiro Ozeki¹, Akihiro Hachikubo¹, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹, Kenji Nishina² (1.Kitami Institute of Technology, 2.Geological Survey of Hokkaido, Hokkaido Research Organization)

*Akihiro Hachikubo¹, Keito Kakizaki¹, Hayato Okuda¹, Oleg Khlystov², Gennadiy Kalmychkov³, Andrej Manakov⁴, Marc De Batist⁵, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹ (1.Kitami Institute of Technology, 2.Limnological Institute, SB RAS, 3.Vinogradov Institute of Geochemistry, SB RAS, 4.Nikolaev Institute of Inorganic Chemistry, SB RAS, 5.Ghent University)

*NIWA TATSUYA¹, Satoshi Yamashita¹, Akihiro Hachikubo¹, Masaaki Konishi¹, Hirotoshi Sakagami¹, Kenji Nishina², Hirotsugu Minami¹ (1.Kitami Institute of Technology, 2.Geological Survey of Hokkaido, Hokkaido Research Organization)

*Kazui Sukawa¹, Akihiro Hachikubo¹, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹, Nobuo Takahashi¹, Hitoshi Shoji¹, Young K Jin², Boris Baranov³, Anatoly Obzhirov⁴, Masaaki Konishi¹ (1. Kitami Institute of Technology, 2.Korea Polar Research Institute, Korea, 3.P. P. Shirshov Institute of Oceanology, RAS, Russia, 4. V. I. Il’ichev Pacific Oceanological Institute FEB RAS, Russia)