*Kyohei Sano¹, Eiichi Sato², Keiji Wada³, Motohiro Tsuboi⁴, Reina NAKAOKA⁵ (1.Shirataki-Geopark, 2.Kobe University Institute for Promotion of Higher Education, 3.Hokkaido University of Education at Asahikawa, 4.School of Science and Technology, Kwansei Gakuin University, 5.Kobe Ocean-Bottom Exploration Center, Kobe University)

*Kyohei Sano¹, Eiichi Sato², Keiji Wada³, Motohiro Tsuboi⁴, Reina NAKAOKA⁵ (1.Shirataki-Geopark, 2.Kobe University Institute for Promotion of Higher Education, 3.Hokkaido University of Education at Asahikawa, 4.School of Science and Technology, Kwansei Gakuin University, 5.Kobe Ocean-Bottom Exploration Center, Kobe University)

*Keiko Suzuki-Kamata¹, Reina NAKAOKA¹, Tomomi Yamane² (1.Kobe Ocean-Bottom Exploration Center , 2.Department of Planetology, Graduate School of Science, Kobe University)

*Keiko Suzuki-Kamata¹, Reina NAKAOKA¹, Tomomi Yamane² (1.Kobe Ocean-Bottom Exploration Center , 2.Department of Planetology, Graduate School of Science, Kobe 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)

*Satoshi Shimizu^1,2, Nobukazu Seama^3,1, Reina NAKAOKA¹, Tetsuo Matsuno^1,3, Koji Kiyosugi⁵, Hikaru Iwamaru^1,2, Mamoru Sano^1,2, Kimihiro Nishimura³, Keiko Suzuki-Kamata^1,3, Katsuya Kaneko³, hiroto yamaguchi⁴, Misaki Horiuchi³, Toki Hirose³, Kazuki Hayashi³, Yoshiyuki Tatsumi^1,3 (1.Ocean Bottom Exploraiton Center, Kobe University, 2.Nippon Marine Enterprises, Ltd., 3.Department of Planetology, Graduate School of Science, Kobe University, 4.Department of Planetology, Faculty of Science, Kobe University, 5.Organization of Advanced Science and Technology, Kobe University)

*Reina NAKAOKA¹, Keiko Suzuki-Kamata^1,2, Satoshi Shimizu¹, Yoshiyuki Tatsumi^1,2, Katsuya Kaneko^2,1, Koji Kiyosugi^3,1, Nobukazu Seama^2,1, Tetsuo Matsuno^1,2, Kimihiro Nishimura², Kazuki Hayashi² (1.Kobe Ocean-Bottom Exploration Center, Kobe University, 2.Department of Planetology, Graduate School ofScience, Kobe University, 3.Organization of Advanced Science and Technology, Kobe University )

*Koji Kiyosugi¹, Keiko Suzuki-Kamata², Haruhisa Morozumi^2,4, Yoshiyuki Tatsumi², Katsuya Kaneko³, Reina NAKAOKA², Mamoru Sano², Satoshi Shimizu², Hikaru Iwamaru², Nobukazu Seama³, Tetsuo Matsuno², Kimihiro Nishimura³, Kazuki Hayashi³, Misaki Horiuchi³ (1.Organization for Advanced and Integrated Research, Kobe University, 2.Kobe Ocean-Bottom Exploration Center, Kobe University, 3.Department of Planetology, Graduate School of Science, Kobe University, 4.Japan Oil, Gas and Metals National Corporation)