Shinji Kawaguchi¹, *Kotaro Yonezu¹, Thomas Tindell¹, Jun-ichiro Ishibashi², Tatsuo Nozaki³, Yoko Ohtomo⁴, Koichiro Watanabe¹ (1.Deaprtment of Earth Resources Engineering, Faculty of Engineering, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University, 3.Research and Development Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology, 4.Faculty of Engineering, Hokkaido University)

*IKESHIMA TAKURO¹, Tsubasa Otake¹, Tsutomu Sato¹, Akane Ito¹, Shuji Ono¹, Jun-ichiro Ishibashi², Tatsuo Nozaki³, Hidenori Kumagai³, Lena Maeda³ (1.Hokkaido University, 2.Kyushu University, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*IKESHIMA TAKURO¹, Tsubasa Otake¹, Tsutomu Sato¹, Akane Ito¹, Shuji Ono¹, Jun-ichiro Ishibashi², Tatsuo Nozaki³, Hidenori Kumagai³, Lena Maeda³ (1.Hokkaido University, 2.Kyushu University, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*Chie Kato¹, Masao Ohno¹, Tadahiro Hatakeyama², Jun-ichiro Ishibashi³, Shuhei Totsuka⁴, Kazuhiko Shimada³ (1.Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University, 2. Information Processing Center, Okayama University of Science, 3.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 4. Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University)

*Chie Kato¹, Masao Ohno¹, Tadahiro Hatakeyama², Jun-ichiro Ishibashi³, Shuhei Totsuka⁴, Kazuhiko Shimada³ (1.Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University, 2. Information Processing Center, Okayama University of Science, 3.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 4. Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University)

*Motoya Habuchi¹, Harue Masuda¹, Tsuyoshi Shintani¹, Shuzo Furuya¹, Keigo Mori¹, Jun-ichiro Ishibashi², Takeshi Matsushima², Akinori Takeuchi³, Syogo Oshima⁴, Reo Ikawa⁵ (1.Osaka City University, 2.Kyushu University, 3.National Institute for Environmental Studies, 4.West Japan Engineering Consultants, Inc., 5.National Institute of Advanced Industrial Science and Technology)

*Keigo Mori¹, Harue Masuda¹, Tsuyoshi Shintani¹, Motoya Habuchi¹, Syuzou Furuya¹, Jun-ichiro Ishibashi², Takeshi Matsushima², Syogo Oshima³, Reo Ikawa⁴ (1.Osaka City University, 2.Kyushu University, 3.West Japan Engineering Consultants, Inc., 4.AIST)

*Keigo Mori¹, Harue Masuda¹, Tsuyoshi Shintani¹, Motoya Habuchi¹, Syuzou Furuya¹, Jun-ichiro Ishibashi², Takeshi Matsushima², Syogo Oshima³, Reo Ikawa⁴ (1.Osaka City University, 2.Kyushu University, 3.West Japan Engineering Consultants, Inc., 4.AIST)

*Shuhei Totsuka¹, Jun-ichiro Ishibashi², Kazuhiko Shimada², Kei Ikehata³, Hideaki Machiyama⁴, Koichi Iijima⁴, Hirofumi Yamamoto⁴, Hidenori Kumagai⁴, Ken Ikehara⁵, Toru Yamasaki⁵, Yutaro Takaya⁶, Toshiro Nagase⁷, Thomas Tindell⁸, Kotaro Yonezu⁸, Yuki Tada⁸ (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 3.Faculty of Life and Environmental Sciences, University of Tsukuba, 4.Research and Development Center for Submarine Resources, JAMSTEC, 5.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 6.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 7.Tohoku University Museum, 8.Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University)

Akihi Tsutsumi¹, Naru Tsukamoto¹, Kazuhiko Shimada¹, *Jun-ichiro Ishibashi¹, Ryuichi Shinjo² (1.Department of Earth and Planetary Sciences, Kyushu University, 2.Faculty of Science, University of Ryukyus)

*Jun-ichiro Ishibashi^1,2, Shuhei Totsuka², Akihi Tsutsumi², Naru Tsukamoto², Yusuke Kira², Kazuhiko Shimada¹, Toru Yamasaki³, Ken Ikehara³, Toshiro Nagase⁴, Yutaro Takaya^5,9, Kei Ikehata⁶, Takashi Goto⁷, Chitaro Gouzu⁷, Ryuichi Shinjo⁸, Hideaki Machiyama⁹, Koichi Iijima⁹, Hirofumi Yamamoto⁹, Hidenori Kumagai⁹ (1.Department of Earth and Planetary Sciences, Kyushu University, 2.Graduate School of Science, Kyushu University, 3.National Institute of Advanced Industrial Science and Technology, 4.Tohoku University Museum, 5.School of Creative Science and Enginerring, Waseda University, 6.Faculty of Life and Environmental Sciences, University of Tsukuba, 7.Hiruzen Institute for Geology and Chronology, 8.Faculty of Science, University of the Ryukyus, 9.Japan Agency for Marine-Earth Science and Technology)

*Claudia Fujita¹, Hajime Yamamoto¹, Jun-ichiro Ishibashi², Takeshi Tsuji³ (1.Taisei Corporation, 2. Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 3.Department of Earth Resources Engineering, Faculty of Science, Kyushu University)

*Jun-ichiro Ishibashi^1,2, Shuhei Totsuka², Akihi Tsutsumi², Naru Tsukamoto², Yusuke Kira², Kazuhiko Shimada¹, Toru Yamasaki³, Ken Ikehara³, Toshiro Nagase⁴, Yutaro Takaya^5,9, Kei Ikehata⁶, Takashi Goto⁷, Chitaro Gouzu⁷, Ryuichi Shinjo⁸, Hideaki Machiyama⁹, Koichi Iijima⁹, Hirofumi Yamamoto⁹, Hidenori Kumagai⁹ (1.Department of Earth and Planetary Sciences, Kyushu University, 2.Graduate School of Science, Kyushu University, 3.National Institute of Advanced Industrial Science and Technology, 4.Tohoku University Museum, 5.School of Creative Science and Enginerring, Waseda University, 6.Faculty of Life and Environmental Sciences, University of Tsukuba, 7.Hiruzen Institute for Geology and Chronology, 8.Faculty of Science, University of the Ryukyus, 9.Japan Agency for Marine-Earth Science and Technology)

*Claudia Fujita¹, Hajime Yamamoto¹, Jun-ichiro Ishibashi², Takeshi Tsuji³ (1.Taisei Corporation, 2. Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 3.Department of Earth Resources Engineering, Faculty of Science, Kyushu University)