*Hirokuni ODA¹, Yasuo OGAWA² (1.National Institute of Advanced Industrial Science and Technology, 2.Tokyo Institute of Technology)

*Ryokei YOSHIMURA¹, Yasuo OGAWA², Yohei YUKUTAKE³, Wataru KANDA², Shogo KOMORI⁴, Tada-nori GOTO⁵, Ryou HONDA³, Masatake HARADA³, Tomoya YAMAZAKI¹, Masato KAMO¹, Yojiro YASUDA⁶, Masanori TANI⁵ (1.DPRI, Kyoto University, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology, 3.Hot Springs Research Institute of Kanagawa Prefecture, 4.Institute of Earth Sciences, Academia Sinica, 5.Graduate School of Engineering, Kyoto University, 6.Graduate School of Engineering, Tottori University)

Yuta HINO¹, *Yasuo OGAWA², Wataru KANDA², Hideaki HASE², Kaori SEKI¹ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Hiroshi ICHIHARA¹, Noriko TADA¹, Kiyoshi BABA², Takafumi KASAYA¹, Masahiro ICHIKI³, Toshiki KAIDA³, Yasuo OGAWA⁴ (1.JAMSTEC, 2.ERI, University of Tokyo, 3.Tohoku University, 4.Tokyo Institute of Technology)

Yuta HINO¹, *Yasuo OGAWA², Wataru KANDA², Hideaki HASE², Kaori SEKI¹ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Hiroshi ICHIHARA¹, Noriko TADA¹, Kiyoshi BABA², Takafumi KASAYA¹, Masahiro ICHIKI³, Toshiki KAIDA³, Yasuo OGAWA⁴ (1.JAMSTEC, 2.ERI, University of Tokyo, 3.Tohoku University, 4.Tokyo Institute of Technology)

*Mustafa kemal TUNCER¹, Ozlem CENGIZ², Bulent TANK², Elif TOLAK-CIFTCI², Tulay KAYA³, Yasuo OGAWA⁴, Yoshimori HONKURA⁴, Masaki MATSUSHIMA⁴, Naoto OSHIMAN⁵, Cengiz CELIK² (1.Istanbul University-Turkey, 2.Bogazici University-Turkey, 3.Tokyo Institute of Technology, Japan, 4.Tokyo Institute of Technology-Japan, 5.Kyoto University-Japan)

*Yasuo OGAWA¹, Masahiro ICHIKI², Wataru KANDA¹ (1.Volcanic Fluid Research Center, Tokyo Institute of Technology, 2.Graduate School of Science, Tohoku University)

*Masahiro ICHIKI¹, Yasuo OGAWA², Toshiki KAIDA¹, Tomotsugu DEMACHI¹, Satoshi HIRAHARA¹, Yoshimori HONKURA², Hiroshi ICHIHARA³, Wataru KANDA², Toshio KONO¹, Takao KOYAMA⁴, Masaki MATSUSHIMA⁵, Takashi NAKAYAMA¹, Shu'ichi SUZUKI¹, Hiroaki TOH⁶, Makoto UYESHIMA⁴ (1.Grad. School of Sci., Tohoku University, 2.VFRC, Tokyo Institute of Technology, 3.IFREE, JAMSTEC, 4.ERI, The University of Tokyo, 5.Grad. School of Sci. & Eng., Tokyo Tech, 6.Grad. School of Sci., Kyoto University)

*Puwis AMATYAKUL¹, Tawat RUNG-ARUNWAN¹, Yasuo OGAWA², Weerachai SIRIPUNVARAPORN¹ (1.Geophysics Research Group, Department of Physics, Faculty of Science, Mahidol University, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Wataru KANDA¹, Shinichi TAKAKURA², Takao KOYAMA³, Yasuo OGAWA¹, Kaori SEKI¹, Yuta HINO¹, Hideaki HASE¹ (1.Tokyo Institute of Technology, 2.The National Institute of Advanced Industrial Science and Technology (AIST), 3.Earthquake Research Institute, University of Tokyo)

*Kaori SEKI¹, Wataru KANDA², Yasuo OGAWA², Hideaki HASE², Yuta HINO¹, Tomokazu KOBAYASHI³, Toshiya TANBO⁴ (1.Department of Earth and Planetary Sciences , Tokyo Institute of Technology, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology, 3.Geospatial Information Authority of Japan, 4.Tateyama Caldera and Sabo Museum)

*Yasuo OGAWA¹ (1.Volcanic Fluid Research Center, Tokyo Institute of Technology)