*Shigeru Sueoka¹, Yasutaka Ikeda², Ken-ichi Kano³, Hiroyuki Tsutsumi⁴, Takahiro Tagami⁴, Barry P. Kohn⁵, Noriko Hasebe⁶, Akihiro Tamura⁶, Shoji Arai⁶, Kenji Shibata⁷ (1.Japan Atomic Energy Agency, 2.Tokyo Univ., 3.Shizuoka Univ., 4.Kyoto Univ., 5.Melbourne Univ., 6.Kanazawa Univ., 7.Kyuden Sangyo Co., Ltd.)

*Shoma Fukuda¹, Shigeru Sueoka², Noriko Hasebe³, Akihiro Tamura³, Shoji Arai³, Takahiro Tagami¹ (1.Graduate School of Science, Kyoto University , 2.Japan Atomic Energy Agency, 3.Graduate School of Natural Science and Technology, Kanazawa University)

*Tadao Nishiyama¹, Ukyou Nishi¹, Akira Yoshiasa¹, Satoko Ishimaru¹, Masami Terauchi², Shoji Arai⁵, Yasushi Mori³, Miki Shigeno³, Hiroaki Ohfuji⁴ (1.Department of Earth and Environmental Sciences, School of Science, Graduate School of Science and Technology, Kumamoto University, 2.Institute of Multidisciplinary Research for Advanced Materials, 3.Kitakyushu City Museum of Natural HIstroy and Human Histrory, 4.Geodynamics Reserach Center, Ehime University, 5.Colledge of Science and Engineering, Kanazawa University)

*Marie Python¹, Claire Charles¹, Natsumi Ito¹, Shoji Arai² (1.Hokkaido University Department of Natural History Science Division of Earth and Planetary Systems Sciences, 2.Departement of Earth Science, Kanazawa University)

Masahiro Kobayashi¹, *Hirochika Sumino², Keisuke Nagao³, Satoko Ishimaru⁴, Shoji Arai⁵, Masako Yoshikawa⁶, Tatsuhiko Kawamoto⁶, Yoshitaka Kumagai⁶, Tetsuo Kobayashi⁷, Ray Burgess⁸, Chris Ballentine⁹ (1.Geochemical Research Center, Graduate School of Science, University of Tokyo, 2.Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, 3.Division of Polar Earth-System Sciences, Korea Polar Research Institute, 4.Department of Earth and Environmental Sciences, Graduate School of Science and Technology, Kumamoto University, 5.Department of Earth Sciences, Faculty of Science, Kanazawa University, 6.Beppu Geothermal Research Laboratory, Institute for Geothermal Sciences Graduate School of Sciences, Kyoto University, 7.Department of Earth and Environmental Sciences, Graduate School of Science and Engineering, Kagoshima University, 8.School of Earth and Environmental Sciences, University of Manchester, 9.Department of Earth Sciences, University of Oxford)

Masahiro Kobayashi¹, *Hirochika Sumino², Keisuke Nagao³, Satoko Ishimaru⁴, Shoji Arai⁵, Masako Yoshikawa⁶, Tatsuhiko Kawamoto⁶, Yoshitaka Kumagai⁶, Tetsuo Kobayashi⁷, Ray Burgess⁸, Chris Ballentine⁹ (1.Geochemical Research Center, Graduate School of Science, University of Tokyo, 2.Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, 3.Division of Polar Earth-System Sciences, Korea Polar Research Institute, 4.Department of Earth and Environmental Sciences, Graduate School of Science and Technology, Kumamoto University, 5.Department of Earth Sciences, Faculty of Science, Kanazawa University, 6.Beppu Geothermal Research Laboratory, Institute for Geothermal Sciences Graduate School of Sciences, Kyoto University, 7.Department of Earth and Environmental Sciences, Graduate School of Science and Engineering, Kagoshima University, 8.School of Earth and Environmental Sciences, University of Manchester, 9.Department of Earth Sciences, University of Oxford)

*Hatsuki ENOMOTO¹, Yuji ICHIYAMA¹, Hisatoshi ITO², Akihiro TAMURA³, Shoji ARAI³ (1.Department of Earth Sciences, Faculty of Science, Chiba University, 2.Central Research Institute of Electric Power Industry, 3.Department of Earth Sciences, Faculty of Science, Kanazawa University)

*Hatsuki ENOMOTO¹, Yuji ICHIYAMA¹, Hisatoshi ITO², Akihiro TAMURA³, Shoji ARAI³ (1.Department of Earth Sciences, Faculty of Science, Chiba University, 2.Central Research Institute of Electric Power Industry, 3.Department of Earth Sciences, Faculty of Science, Kanazawa University)