*Takumu Chijiiwa¹, Hitoshi Hasegawa², Trishit Ruj¹, Goro Komatsu⁴, Hiroki Shozaki⁵, Sakiko Kikuchi⁶, Aki Sakuma³, Tomohiro Usui⁷ (1.Natural Science and Technology, Life, Graduate School of Environment, Okayama Univ., 2.Kochi Univ., 3.Tokyo Univ., 4.Universiá d'Annunzio, 5.ELSI, Institute of Science Tokyo, 6.JAMSTEC, 7.JAXA)

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)

*Atsuki Nagata¹, Hiroto Kajita², Hirofumi Tazoe³, Junpei Abo², Hinano Kusunose², Takuto Ando⁴, Takahiro Suzuki⁴, Masahiro Minowa⁵, Iroha Ono⁶, Hitoshi Hasegawa⁶, Aki Sakuma⁷, Asuka Yamaguchi⁸, Yoshiaki Suzuki⁹, Koji Umeda² (1.Graduate school of Sustainable Community Studies, Hirosaki University, 2.Graduate school of Science and Technology, Hirosaki University, 3.Institute of Radiation Emergency Medicine, Hirosaki University, 4.Graduate School of International Resource Sciences, Akita University, 5.Institute of Low Temperature Science, Hokkaido University, 6.Faculty of Science and Technology, Kochi University, 7.Department of Earth and Planetary Science, School of Science, the University of Tokyo, 8.Atomosphere and Ocean Research Institute, The University of Tokyo, 9.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology)

*Hiroki Matsumoto¹, Chisato Anai², Hitoshi Hasegawa¹, Kanade Izumi¹, Minoru Ikehara¹, Aki Sakuma³, Ryusei Kuma⁴, Yuhji Yamamoto¹ (1.Kochi University, 2.Kyuto University, 3.University of Tokyo, 4.Miyazaki 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)

*Kanade Izumi¹, Hitoshi Hasegawa¹, Minoru Ikehara¹, Aki Sakuma², Hiroki Matsumoto¹, Chisato Anai³, Ryusei Kuma⁴ (1.Kochi University, 2.University of Tokyo, 3.Kyoto University, 4.Miyazaki University)

*Akito Nakamura¹, Hitoshi Hasegawa¹, Tomoyo Okumura¹, Minoru Ikehara¹, Aki Sakuma², Chuan-Chou Shen³, Ichinnorov Niiden⁴, Davassuren Davadori⁵, Tsuyoshi Ishikawa⁶, Asuka Yamaguchi², Goro Komatsu⁷ (1.Kochi univ., 2.Univ.Tokyo, 3.National Taiwan Univ., 4.Paleontological Institute, Mongolia, 5.Mongolian National Univ., 6.JAMSTEC, 7.Università d’Annunzio)

*Aki Sakuma¹, Taiga Okumura¹, Takaaki Itai¹ (1.Department of Earth and Planetary Science, School of Science, the University of Tokyo)