*Keiji Wada¹, Yu Nakatsuka, Eiichi Sato², Yuya Okada¹ (1.Earth Science Laboratory, Hokkaido University of Education at Asahikawa, 2.Institute for Promotion of Higher Education, Kobe University)

*Tsutomu Honda¹, Hiroshi Tachihara¹, Tadato Makita¹ (1.Vulcano-speleological Society)

*Koji Kiyosugi¹ (1.Organization of Advanced Science and Technology, Kobe University)

*Reina NAKAOKA¹, Kazuhiko Kano², Keiko Suzuki-Kamata¹ (1.Kobe University, 2.Kagoshima University)

*Tomomi Yamane¹, Keiko Suzuki-Kamata² (1.Graduate School of Science, Kobe University, 2.Kobe Ocean-Bottom Exploration Center)

*Tsuyoshi Miyamoto¹, Yoshimi Hiroi², Masayoshi Fujino³ (1.Center for Northeast Asian Studies, Tohoku University, 2.Graduated school of Science, Tohoku University, 3.HIGASHI NIPPON BROADCASTING CO,Ltd.)

*Daisuke Sekine¹, Takeshi Hasegawa¹ (1.Ibaraki University Major in Science Department of Earth Science)

*Susumu Umino¹, Yuki Kusano², Atsushi Yamaji³ (1.Department of Earth Sciences, Kanazawa University, 2.Geological Survey of Japan, AIST, 3.Division of Earth and Planetary Sciences, Kyoto University)

*Yuzuki Ibaraki¹, Susumu Umino¹ (1.Kanazawa University )

*Eiichi Sato¹, Keiji Wada² (1.Institute for Promotion of Higher Education, Kobe University, 2.Earth Science Laboratory, Hokkaido University of Education at Asahikawa)

*Yuma Endo¹, Keiji Wada¹, Eiichi Sato² (1.Earth Science Laboratory, Hokkaido University of Education at Asahikawa, 2.Institute for Promotion of Higher Education, Kobe University)

*Ryunosuke Enoeda¹, Mitsuhiro Nakagawa¹ (1.Hokkaido University)

*Ryoko Matsuo¹, Mitsuhiro Nakagawa¹ (1.Hokkaido University)

*Mizuho Amma-Miyasaka¹, Mitsuhiro Nakagawa¹, Daisuke MIURA², Shimpei Uesawa², Ryuta FURUKAWA³, Akiko Matsumoto¹ (1.Hokkaido University, 2.Central Research Institute of Electric Power Industry, 3.Advanced Industrial Science and Technology)

*Yuki Nishi¹, Masao Ban², Oikawa Teruki³ (1.Graduate School of Science and Technology, Yamagata University, 2.Department of Earth and Enviromental Science, Faculty of Science, 3.Advanced Industrial Science and Technology)

*Chris Conway¹, Colin Wilson², John Gamble², Graham Leonard³, Dougal Townsend³ (1.National Museum of Nature and Science, 2.Victoria University of Wellington, 3.GNS Science)

*Yuriko Konishi¹, Atsushi Toramaru² (1.Department of Earth and Planetary Science, Graduate School of Science, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University)

*Koshi Nishimura¹ (1.Toyo Univ.)

*Katy Jane Chamberlain¹, Katie Preece², Jenni Barclay³, Jane H Scarrow^3,4, Richard J Brown⁵, Jon P Davidson⁵, Darren Mark² (1.Japan Agency for Marine-Earth Science and Technology, 2.SUERC, East Kilbride, UK, 3.University of East Anglia, Norwich, UK, 4.University of Granada, Granada, Spain, 5.Durham University, Durham, UK)

*Kyohei Sano¹, Eiichi Sato², Keiji Wada³ (1.Shirataki-Geopark, 2.Kobe University Institute for Promotion of Higher Education, 3.Hokkaido University of Education at Asahikawa)

*Haruka Ino¹, Atsushi Toramaru² (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University)

*Mizuki Takehara¹, Atsushi Toramaru² (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University)