*Yukihiro Nakatani¹, Hiroshi Yakiwara¹, Shuichiro Hirano¹, Reiji Kobayashi², Hiroki Miyamachi², Shigeru Nakao², Kazunari Uchida³, Takeshi Matsushima³, Hiroshi Shimizu³, Kazuo Nakahigashi⁴, Yusuke Yamashita⁵, Hideji Abe⁶, Tomoaki Yamada⁶, Masanao Shinohara⁶ (1.Nansei-Toko Observatory for Earthquakes and Volcanoes, Kagoshima University, 2.Graduate School of Science and Engineering, Kagoshima University, 3.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 4.Tokyo University of Marine Science and Technology, 5.Disaster Prevention Research Institute, Kyoto University, 6.Earthquake Research Institute, the University of Tokyo)

*Yukihiro Nakatani¹, Hiroshi Yakiwara¹, Shuichiro Hirano¹, Reiji Kobayashi², Hiroki Miyamachi², Shigeru Nakao², Kazunari Uchida³, Takeshi Matsushima³, Hiroshi Shimizu³, Kazuo Nakahigashi⁴, Yusuke Yamashita⁵, Hideji Abe⁶, Tomoaki Yamada⁶, Masanao Shinohara⁶ (1.Nansei-Toko Observatory for Earthquakes and Volcanoes, Kagoshima University, 2.Graduate School of Science and Engineering, Kagoshima University, 3.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 4.Tokyo University of Marine Science and Technology, 5.Disaster Prevention Research Institute, Kyoto University, 6.Earthquake Research Institute, the University of Tokyo)

*Hiroki Miyamachi¹, Hiroaki Takahashi², Hiroshi Aoyama², Mako Ohzono², Takahiro Shiina⁶, Masamitsu Takada², Masayoshi Ichiyanagi², Teruhiro Yamaguchi², Yuki Susukida², Saito Kazuma², Chihiro Ito², Yoshio Murai², Tatsuya Nakagaki², Tomoki Tsutsui³, Ryuichi Takei³, Yuuya Tada³, Mare Yamamoto⁴, Satoshi Hirahara⁴, Takashi NAKAYAMA⁴, Ryosuke Azuma⁴, Syuichi Suzuki⁴, Toshinori Sato⁵, Eiji Kurashimo⁶, Miwako Ando⁶, Shinichi Tanaka⁶, Satoshi Ikezawa⁶, Tomoaki Yamada⁶, Kazuo Nakahigashi⁷, Yuta Maeda⁸, Shinichiro Horikawa⁸, Kenjirou Matsuhiro⁸, Takashi OKUDA⁸, Shuhei Tsuji⁸, Naoki Sogawa⁸, Hiroshi Katao⁹, Takuo Shibutani⁹, Tsutomu Miura⁹, Nakagawa Jun⁹, Itaru Yoneda⁹, Takeshi Tameguri⁹, Kosei Takishita⁹, Kazuho Nakai⁹, Yusuke Yamashita⁹, Takeshi Matsushima¹⁰, Kazunari Uchida¹⁰, Rintaro Miyamachi¹⁰, Hiroshi Yakiwara¹, Shuichiro Hirano¹, Takeshi Kubo¹, Kenyu Sakao¹ (1.Kagoshima University, 2.Hokkaido University, 3.Akita University, 4.Tohoku University, 5.Chiba University, 6.University of Tokyo, 7.Tokyo University of Marine Science and Technology, 8.Nagoya University, 9.Kyoto University, 10.Kyushu University)

*Hiroki Miyamachi¹, Hiroaki Takahashi², Hiroshi Aoyama², Mako Ohzono², Takahiro Shiina⁶, Masamitsu Takada², Masayoshi Ichiyanagi², Teruhiro Yamaguchi², Yuki Susukida², Saito Kazuma², Chihiro Ito², Yoshio Murai², Tatsuya Nakagaki², Tomoki Tsutsui³, Ryuichi Takei³, Yuuya Tada³, Mare Yamamoto⁴, Satoshi Hirahara⁴, Takashi NAKAYAMA⁴, Ryosuke Azuma⁴, Syuichi Suzuki⁴, Toshinori Sato⁵, Eiji Kurashimo⁶, Miwako Ando⁶, Shinichi Tanaka⁶, Satoshi Ikezawa⁶, Tomoaki Yamada⁶, Kazuo Nakahigashi⁷, Yuta Maeda⁸, Shinichiro Horikawa⁸, Kenjirou Matsuhiro⁸, Takashi OKUDA⁸, Shuhei Tsuji⁸, Naoki Sogawa⁸, Hiroshi Katao⁹, Takuo Shibutani⁹, Tsutomu Miura⁹, Nakagawa Jun⁹, Itaru Yoneda⁹, Takeshi Tameguri⁹, Kosei Takishita⁹, Kazuho Nakai⁹, Yusuke Yamashita⁹, Takeshi Matsushima¹⁰, Kazunari Uchida¹⁰, Rintaro Miyamachi¹⁰, Hiroshi Yakiwara¹, Shuichiro Hirano¹, Takeshi Kubo¹, Kenyu Sakao¹ (1.Kagoshima University, 2.Hokkaido University, 3.Akita University, 4.Tohoku University, 5.Chiba University, 6.University of Tokyo, 7.Tokyo University of Marine Science and Technology, 8.Nagoya University, 9.Kyoto University, 10.Kyushu University)

*Nobukazu Seama^1,2, Tetsuo Matsuno^2,1, Koji Kiyosugi^3,2, Satoshi Shimizu², Reina Nakaoka², Keiko Suzuki-Kamata^2,1, Yasutomo Seto¹, Mamoru Sano², Yuiko Morita⁴, Hikaru Iwamaru², Haruhisa Morozumi², Misaki Horiuchi¹, Kimihiro Nishimura¹, Hiroshi Ichihara⁵, Kazuki Hayashi¹, Toki Hirose¹, Katsuya Kaneko^1,2, Hiroto Yamaguchi⁴, Yuki Okizono⁴, Hiroko Sugioka^1,2, Kazuo Nakahigashi^6,2, Yojiro Yamamoto⁷, Tatsuya KODA², Shuichi Kodaira^7,2, Yoshiyuki Tatsumi^2,1, Scientific party of T/S Fukae-maru Kikai caldera research cruises (1.Department of Planetology, Graduate School of Science, Kobe University, 2.Kobe Ocean Bottom Exploration Center, Kobe University, 3.Organization of Advanced Science and Technology, Kobe University, 4.Department of Planetology, Faculty of Science, Kobe University, 5.Graduate school of environmental studies, Nagoya University, 6.Tokyo University of Marine Science and Technology, 7.Japan Agency for Marine-Earth Science and Technology)