*Nagisa Sawada¹, Nobuko Kametani², Kazuo Kawasaki³, Yasuo Ishizaki³, Akihiko Terada⁴ (1.University of Toyama, 2.Mount Fuji Research Institute, Yamanashi Prefectural Government, 3.School of Sustainable Design, University of Toyama, 4.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Mare Yamamoto¹, Shoki Akiyama¹, Hiroshi Aoyama², Takao Ohminato³, Akihiko Terada⁴, Yuta Maeda⁵, Takahiro Ohkura⁶, Takeshi Matsushima⁷, Haruhisa Nakamichi⁸, Ryou Honda⁹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University, 3.Earthquake Research Institute, Tokyo University, 4.Volcanic Fluid Research Center, Tokyo Institute of Technology, 5.Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University, 6.Aso Volcanological Laboratory, Institute for Geothermal Sciences, Graduate School of Science, Kyoto University, 7.Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 8. Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University, 9. Hot Springs Research Institute of Kanagawa Prefecture)

*Akihiko Terada¹, Kai Wakamatsu¹, Noriaki Mizutani¹, Hirochika Sumino², Tomoya Obase⁴, Takeshi Ohba³, Masanori Takahashi¹, Muga Yaguchi⁵, Yuki Takahashi¹ (1.Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology, 2.Research Center for Advanced Science and Technology, University of Tokyo, 3.Department of Chemistry, School of Science, Tokai University, 4.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 5.Meteorological Research Institute, Japan Meteorological Agency)

*Wataru Kanda¹, Akihiko Terada¹, Matsunaga Yasuo^1,4, Tatsuji Nishizawa², Rina Noguchi³ (1.School of Science, Tokyo Institute of Technology, 2.Mount Fuji Research Institute, Yamanashi Prefectural Government, 3.Faculty of Science, Niigata University, 4.Earthquake Research Institute, the University of Tokyo)