*Keiichi Ishizu¹, Yasuo Ogawa², Kuo Hsuan Tseng², Sohei Serita², Takahiro Kunitomo⁶, Takuto Minami⁴, Hiroshi Ichihara³, Grant Caldwell⁵, Wiebke Heise⁵, Ted Bertrand⁵ (1.University of Hyogo, 2.Tokyo Institute of Technology, Japan, 3.Nagoya University, 4.Kobe University, 5.GNS Science, 6.Ontake Science Lab)

*Grant Caldwell¹, Ted Bertrand¹, Wiebke Heise¹, Yasuo Ogawa², Stephen Bannister¹, Sandra Bourguigon¹, John Haines¹, Laura Wallace¹, Susan Ellis¹, Sandra Piazolo³, Virginia Toy⁴, Phaedra Upton¹ (1.GNS, 2.TITECH, 3.U. Leeds, 4.U. Mainz)

*Wiebke Heise¹, Ted Bertrand¹, Grant Caldwell¹, Yasuo Ogawa², Stephen Bannister¹, Stewart Bennie¹, Rory Hart¹, Neville Palmer¹, Kuo Hsuen Tseng^2,4, Masato Fukai^2,5, Masaki Ishikawa², Kaori Seki^2,6, Tatsuji Nishizawa^2,7, Jack McGrath³ (1.GNS Science, PO Box 30368, Lower Hutt, New Zealand, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology, Tokyo, Japan, 3. School of Earth and Environment, University of Leeds, UK, 4.Sumiko Resources Exploration & Development Co., Ltd., Japan, 5.Nittetsu Mining Consultants Co., Ltd., Japan, 6.Kokusai Kogyo Co., Ltd.,Japan, 7.Mount Fuji Research Institute, Yamanashi Prefectural Government, Japan)

*Norihiro Kitaoka¹, Yasuo Ogawa¹, Keiichi Ishizu², Takuto Minami³, T. Grant Caldwell⁴, Alison Kirkby⁴ (1.Tokyo Institute of Technology, 2.University of Hyogo, 3.Kobe University, 4.GNS Science)

*Naoyuki Wakao¹, Aoi Motoyama¹, Masahiro Ichiki¹, Yasuo Ogawa², Makoto Uyeshima³, Koichi Asamori⁴, Toshihiro Uchida⁵, Hideaki Hase⁶, Takao Koyama³, Shin'ya Sakanaka⁷, Yusuke Yamaya⁵, Koki Aizawa⁸, Toshiki Kaida¹ (1.TOHOKU UNIVERSITY, 2.Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology, 3.Earthquake research institute, the university of Tokyo, 4.Japan Atomic Energy Agency, 5.National institute of advanced industrial science and technology, 6.Geothermal Energy Research & Development Co., Ltd, 7.Graduate School of International Resource Sciences Department of Earth Resource Engineering and Environmental Science, Akita University, 8.Graduate school of science, Kyusyu university)

*Shogo Masuda¹, Yasuo Ogawa^1,2, Masahiro Ichiki³ (1.Tokyo Institute of Technology, 2.Volcanic Fluid Research Center, School of Sciences, Tokyo Institute of Technology, 3.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)