*Tetsuya SHIMAMURA¹, Shin ARITA¹, Norimichi MASHIKO¹, Ikuko FUJII¹, Keiichi FUKUI¹, Masashi OGISO² (1.Kakioka Magnetic Observatory, JMA, 2.Matsushiro Seismological Observatory, JMA)

*Hiroaki NAGAYAMA¹, Masashi MIAYAMOTO¹, Jun FUJIMATSU¹, Yuji USUI¹, Yuji FUSHIYA¹, Jun'ichi MIYAMURA¹ (1.Sapporo Regional Headquarters, JMA)

*Yoshimi HIROI¹, Tsuyoshi MIYAMOTO² (1.Grad.Sci.Tohoku Univ., 2.CNEAS.,Tohoku Univ.)

*Toru TAKANO¹, Tsuyoshi INOUE², Masao BAN³, Teruki OIKAWA⁴, Seiko YAMASAKI⁴ (1.Graduate School of Department of Earth and Environmental Sciences, Yamagata University, 2.Nippon Koei Co., Ltd., 3.Department of Earth and Environmental Sciences, Faculty of Science, Yamagata University, 4.Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advance)

*Masashi NAGAI¹, Toshikazu TANADA¹, Hideki UEDA¹, Tetsuo KOBAYASHI² (1.National Research Institute for Earth Science and Disaster Prevention, 2.Kagoshima University)

*Koji ITO¹, Tomozo ONO¹, Noboru SASAHARA¹, Kenji NOGAMI² (1.Japan Coast Guard, 2.Volcanic Fruid Research Center, Tokyo Institute of Technology)

*Akihiko TERADA¹ (1.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Mie ICHIHARA¹, Jun OIKAWA¹, Minoru TAKEO¹ (1.Earthquake Research Institute, University of Tokyo)

*Haruhisa NAKAMICHI¹, Tomoki TSUTSUI², Takeshi TAMEGURI¹, Masato IGUCHI¹, Hiroshi YAKIWARA³, Takao OHMINATO⁴, Akira SUGAI⁵, Hiromitsu OSHIMA⁶, Satoshi MIURA⁷, Mare YAMAMOTO⁷, Masahiro ICHIKI⁷, Kenji NOGAMI⁸, Minoru TAKEO⁴, Mie ICHIHARA⁴, Jun OIKAWA⁴, Yoshiko YAMANAKA⁹, Takahiro OHKURA¹, Yuki ABE¹, Hiroshi SHIMIZU¹⁰, Yusuke YAMASHITA¹⁰, Hiroki MIYAMACHI³, Reiji KOBAYASHI³, Daisuke MIKI¹, Keigo YAMAMOTO¹, Tokumitsu MAEKAWA⁶, Satoshi HIRAHARA⁷, Atsushi WATANABE⁴, Takashi OKUDA⁹, Shinichiro HORIKAWA⁹, Kenjiro MATSUHIRO, Tadaomi SONODA, Kenjiro SEKI, Shin YOSHIKAWA, Shuichiro HIRANO, Yukihiro WATANABE, Yuji USUI, Tsukasa KOBAYASHI, Keiji IKEDA, Shinya NAGATO, Tomoyuki KOEDA (1.Kyoto University, 2.Akita University, 3.Kagoshima University, 4.University of Tokyo, 5.Japan Meteorological Agency, 6.Hokkaido University, 7.Tohoku University, 8.Tokyo Institute of Technology, 9.Nagoya University, 10.Kyushu University)

*Yamada TAISHI¹, Hiroshi AOYAMA¹, Takeshi NISHIMURA², Hiroshi YAKIWARA³, Haruhisa NAKAMICHI⁴, Jun OIKAWA⁵, Masato IGUCHI⁴, Hendrasto MUHAMAD⁶, Suparman YASA⁶ (1.Faculty of Sci., Hokkaido Univ., 2.Graduate School of Sci., Tohoku Univ., 3.Faculty of Sci., Kagoshima Univ., 4.DPRI, Kyoto Univ., 5.ERI, Univ. of Tokyo, 6.CVGHM, Indonesia)