James Shania¹, *Masayuki Ikeda¹, Yoshimi Kubota², Ochi Yoshihiro¹, Ryuji Tada³, Aki Sakuma¹, Takuya Itaki⁵, Steve Clemens⁴ (1.University of Tokyo, 2.National Museum of Nature and Science , 3.Chiba Institute of technology, 4.Brown University, 5.AIST)

*Mutusmi Iizuka¹, Atsuko Amano¹, Takuya Itaki¹ (1.The National Institute of Advanced Industrial Science and Technology)

*Kenji Matsuzaki¹, Takuya Itaki², Takuya Sagawa³, Yoshiaki Suzuki², Tomohisa Irino⁴, Ken Ikehara² (1.Atmosphere and Ocean Research Institute, The university of Tokyo, 2.AIST, Geological Survey of Japan, Higashi 1-1-1, Tsukuba Central 7, Ibaraki 305-8567, Japan, 3.Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan, 4.Graduate School of Environmentral Science, Hokkaido University, N10W5 Sapporo Hokkaido 060-0810, Japan)

*Kenji Matsuzaki¹, Takuya Itaki², Yoshimi Kubota³, Kyung Eun Lee⁴, Isao Motoyama⁵, Takuya Sagawa⁶, Keiji Horikawa⁷, Masafumi MURAYAMA⁸, Hajime Obata¹ (1.Atmosphere and Ocean Research Institute, The university of Tokyo, 2.AIST, Geological Survey of Japan, 3.National Museum of Nature and Science, 4.Korea Maritime and Ocean University, 5.Faculty of Science, Yamagata University, 6.Institute of Science and Engineering, Kanazawa University, 7.Faculty of Science, Academic Assembly, University of Toyama, 8.Faculty of Agriculture and Marine Science, Kochi University)

*Mihoko Kawabe¹, Hitoshi Hasegawa¹, Takuya Itaki², YOSHIKI ASANO¹, U Heimhofer ³, N Ichinorov ⁴, Takashi Hasegawa⁵, Keitaro Yamada⁶, Yoichi Usui⁵, Aki Sakuma⁷, Takuto Ando⁸ (1.Kochi University, 2.AIST, 3.Hannover University, 4.Mongolian Academy of Sciences, 5.Kanazawa University, 6.Ritsumeikan University, 7.University of Tokyo, 8.Akita University)

*Takuya Itaki¹, Isao Motoyama², Kenji Matsuzaki⁴, Shin-ichi Kamikuri³, Kazuhide Mimura¹, Ayumu Miyakawa¹ (1.Geological Survey of Japan, AIST, 2.Yamagata University, 3.Ibaraki University, 4.University of Tokyo)

*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)

*Yuri Yamazaki¹, Yusuke Suganuma^2,1, Takuya Itaki³, Atsuko Amano³, Takeshige Ishiwa^2,1, Motohiro Hirabayashi^2,1, Hiroyuki Matsuzaki⁴, Takeyasu Yamagata⁴, Jun'ichi Okuno^5,2,1, Daisuke Hirano^2,1, Takeshi Tamura^2,1, Keiji Misawa^2,1, Kosei E Yamaguchi⁶ (1.The Graduate University for Advanced Study, SOKENDAI, 2.National International Polar Research, 3.Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology, 4.Tokyo University, 5. Joint Support-Center for Data Science Research, Research Organization of Information and Systems, 6.Toho University)

*Saki Ishino¹, Takuya Itaki¹, Motohisa Fukuda² (1.National Institute of Advanced Industrial Science and Technology, 2.Faculty of Science, Yamagata University)

*Takeshige Ishiwa^1,2, Kota Katsuki³, Yuki Tokuda⁴, Takuya Itaki⁵, Satoshi Sasaki⁶, Kaihe Yamazaki⁷, Takayuki Omori⁸, Jun'ichi Okuno^1,2, Minoru Ikehara⁹, Yusuke Suganuma^1,2 (1.National Institute of Polar Research, 2.SOKENDAI, 3.Shimane University, 4.Tottori University of Environmental Studies, 5.AIST, 6.Gunma University, 7.University of Tasmania, 8.University of Tokyo, 9.Kochi University)

Kantaro Yamada¹, Tomohiro Toki², Tsuyoshi Ishikawa³, Jun-ichiro Ishibashi¹, Hironori Otsuka⁴, Takuya Itaki⁵, Masafumi MURAYAMA⁶, *Akira Ijiri¹ (1.Kobe University, 2.University of the Ryukyus, 3.JAMSTEC, 4.The University of Tokyo, 5.AIST, 6.Kochi University)

*Atsuko Amano¹, Takuya Itaki¹, Natsuyo Uchida², Kosuke Tanaka², Go Suzuki² (1.National institute of Advanced Industrial Science and Technology, 2.National Institute for Environmental Studies)

*Jumpei Yoshioka¹, Takuya Itaki¹, Kazuhide Mimura¹, Ayumu Miyakawa¹, Arisa Seki² (1.National Institute of Advanced Industrial Science and Technology, 2.Faculty of Science, Shinshu University)