*Mizuki Hirano¹, Iizuka Yoshinori², Kaoru Kawakami², Sumito Matoba², Hiroshi Ohno³, Takuto Ando⁴ (1.Graduate School of Environmental Science Hokkaido University, 2. Institute of Low Temperature Science Hokkaido University, 3.Division of Civil and Environmental Engineering Kitami Institute of Technology, 4.Graduate School of International Resource Sciences Akita University)

Kazane Kano¹, *Takuto Ando¹, Kohei Matsuno², Amane Fujiwara³ (1.Akita University, 2.Hokkaido University, 3.JAMSTEC)

*Yusuke kodama¹, Takuto Ando², Ken Sawada^1,3 (1.Department of Natural History Sciences, Graduate school of Science, Hokkaido University, 2.Department of Earth Resource Science, Faculty of International Resource Sciences, Akita University, 3.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)

*Takahiro Suzuki¹, Takuto Ando¹, Shun Chiyonobu¹, Takeshi Hayashi², Hiroto Kajita³ (1.Graduate School of International Resource Sciences, 2.Faculty of Education and Human Studies, Akita Univ., 3.Faculty of Science and Technology, Hirosaki University)

*Shogen Yamagishi¹, Takuto Ando¹, Shun Chiyonobu¹ (1.Akita University)

*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 Yano¹, Hideto Nakamura², Hirokazu Yukawa³, Takuto Ando⁴ (1.Graduate School of Science, Hokkaido University, 2.Faculty of Science, Hokkaido University, 3.Fukui Prefectural Dinosaur Museum, 4.Graduate School of International Resource Sciences, Akita 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)

*Kana Matsuda¹, Yuki Hattori¹, Takuto Ando², Hideto Nakamura^1,3, Kotaro Hirose⁴, Ken Sawada^1,3 (1.Department of Natural History Sciences, Graduate School of Science, Hokkaido University, 2.Department of Earth Resource Science, Faculty of International Resource Sciences, Akita University, 3.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 4.Hyogo Prefectural University)

*Tetsu Funaki¹, Takuto Ando¹, Stephen Obrochta¹, Shun Chiyonobu¹ (1.Akita University)