*Takaaki Arai¹, Hirochika Sumino², Naoto Hirano⁵, Shiki Machida⁴, Akira Ishikawa³, Norikatsu Akizawa⁶ (1.School of Science, The University of Tokyo, 2.Research Center for Advanced Science and Technology, The University of Tokyo, 3.Department of Earth and Planetary Sciences, School of Science, Institute of Science Tokyo, 4.Ocean Resource Research Center for Next Generation, Chiba Institute of Technology, 5.Center for Northeast Asian Studies Tohoku University, 6.Hiroshima University)

*Tetsu Kogiso¹, Akira Ishikawa², Norikatsu Akizawa³ (1.Kyoto University, 2.Institute of Science Tokyo, 3.Hiroshima University)

Hidetoshi Mori¹, *Akira Ishikawa¹, Tetsuya Yokoyama¹, Tetsu Kogiso², Norikatsu Akizawa³ (1.Department of Earth and Planetary Sciences, Institute of Science Tokyo, 2.Graduate School of Human and Environmental Studies, Kyoto University, 3.Graduate School of Human and Environmental Studies, Kyoto UniversityEarth and Planetary System Science, Hiroshima University)

*Kohei Nimura¹, Takaaki Moriguchi², Norikatsu Akizawa³, Shiki Machida⁴, Kyoko Okino⁵, Katsuyoshi Michibayashi^1,6 (1.Department of Earth and Planetary Sciences, GSES, Nagoya University, 2.Kawasaki Geological Engineering Co., Ltd., 3.Graduate School of Advanced Science and Engineering, Hiroshima University, 4.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 5.tmosphere and Ocean Research Institute, The University of Tokyo, 6.Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC)

*Tomoaki Morishita^1,2, Noriaki Abe³, Maria Filomena Loreto⁴, Irina Y. Fllina⁵, Brandon D. Shuck⁶, Norikatsu Akizawa⁷, Manon Bickert⁸, Emily Cunningham⁹, Agata Di Stefano¹⁰, Qi Fu¹¹, Swanne B.L. Gontharet¹², Lorna E. Kearns¹³, Ravi Kiran Koorapati¹⁴, Chao Lei¹⁵, Luca Magri¹⁶, Walter Menapace¹⁷, Ashutosh Pandey¹⁸, Victoria L. Pavlovics⁹, Philippe A. Pedard¹⁹, Eirini M. Poulaki⁶, Milena A. Rodriguez-Pilco²⁵, Alessio Sanfilippo²⁰, Paola Vannucci²¹, Akihiro Tamura¹, Xiangyu Zhao²², Emily R. Estes²³, Alberto Malinverno²⁴, Nevio Zitellini⁴ (1.Kanazawa University, 2.JAMSTEC, 3.Tono Geoscience Center Japan Atomic Energy Agency (JAEA), 4.ISMAR, 5.University of Nebraska, 6.Louisiana State University, 7.Hiroshima University, 8.Brest University, 9.University of Utah, 10.University of Catania, 11.University of Houston, 12.Sorbonne University, 13.University of Texas at Austin, 14.Binghamton University, 15.China University of Geosciences, 16.University of Tasmania, 17.MARUM, 18.Indian Institute of Science Education and Research Thiruvananthapuram, 19.Geosciences Montpellier, 20.University of Pavia, 21.University of Florence, 22.Shanghai Jiao Tong University, 23.NSF, 24.LDEO, Columbia University, 25.Texas A&M University at Galveston)

*Masakazu Fujii^1,2, Makoto Takeuchi³, Tomohiro Ito⁴, Norikatsu Akizawa⁴, Shiki Machida⁵, Chiori Tamura³, Masanari Ashida³, Kyoko Okino³ (1.National Institute of Polar Research, 2.The Graduate University for Advanced Studies, SOKENDAI, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Hiroshima University, 5.Chiba Institute of Technology)

*Sayako Terada¹, Norikatsu Akizawa², Masako Yoshikawa², Tomoyuki Shibata², Tomoaki Morishita³, Akihiro Tamura³, Alessio Sanfilippo⁴, Ashutosh Pandey⁵, Eirini Poulaki⁶, Emily Cunningham⁷, Manon Bickert⁸, Paola Vannucchi⁹, Chao Lei¹⁰, Swanne Gontharet¹¹, Noriaki Abe¹², Agata Stefano¹³, Irina Filina¹⁴, Qi Fu¹⁵, Lorna Kearns¹⁶, Ravi Kiran Koorapati¹⁷, Filomena Loreto¹⁸, Luca Magri¹⁹, Walter Menapace²⁰, Victoria Pavlovics⁷, Philippe Pezard²¹, Milena Rodriguez-Pilco²², Brandon Shuck⁶, Xiangyu Zhao²³, Emily Estes²⁴, Alberto Malinverno²⁵, Nevio Zitellini¹⁸ (1.Earth and Planetary Systems Science Program, Hiroshima Uni, 2.Earth and Planetary Systems Science Program at Graduate School of Advanced Science and Engineering, Hiroshima Uni, 3.Institute of Science and Engineering Faculty of Natural System, Kanazawa Uni, 4.Uni Pavia, 5.IISER TVM, 6.Louisiana State Uni, 7.Uni Utah, 8.Uni Brest, 9.Uni Florence, 10.China Uni, 11.Sorbonne Uni, 12.JAEA, 13.Uni Catania, 14.Uni Nebraska, 15.Uni Houston, 16.Uni Leeds, 17.Binghamton Uni, 18.CNR-ISMAR, 19.Uni Tasmania, 20.ICP, 21.Montpellier Uni, 22.Texas A&M Uni at Galveston, 23.Shanghai Jiao Tong Uni, 24.Texas A&M Uni, 25.Columbia Uni)

*Itaru Mitsukawa¹, Akira Miyake¹, Yohei Igami¹, Tetsu Kogiso¹, Norikatsu Akizawa², Junya Matsuno³, Megumi Matsumoto⁴, Akira Tsuchiyama^5,6, Kentaro Uesugi⁷, Masahiro Yasutake⁷, Tomoki Taguchi⁸, Yoshio Takahashi⁹, Shohei Yamashita¹⁰, Shota Okumura¹¹ (1.Kyoto University, 2.Hiroshima University, 3.Kyushu University, 4.Tohoku University, 5.Ritsumeikan University, 6.Guangzhou Institute of Geochemistry, 7.JASRI/SPring-8, 8.Waseda University, 9.University of Tokyo, 10.KEK, 11.Sumitomo Chemical)

*Yohei Igami¹, Mayumi Mujin², Norikatsu Akizawa³, Akira Miyake¹ (1.Kyoto University, 2.Tohoku University, 3.Hiroshima University)

*Masako Yoshikawa¹, Norikatsu Akizawa¹, Akihiro Tamura², Tomoaki Morishita² (1.Graduate School of Advanced Science and Engineering, Hiroshima University, 2.Institute of Science and Engineering Faculty of Natural System, Kanazawa University)

*Kohei Nimura¹, Shiki Machida², Norikatsu Akizawa³, Aoi Harada¹, Naoto Hirano⁴, So Inoue¹, Akira Ishikawa⁵, Kazuki Matsuyama ^1,6, Katsuyoshi Michibayashi^1,7, Tomoaki Morishita⁸, Taiki Nakano⁹, Yuka Niwa⁵, Makoto Sano⁹, Yibing Li¹⁰, Kyoko Okino¹¹ (1.Department of Earth and Planetary Sciences, GSES, Nagoya University, 2.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 3.Graduate School of Advanced Science and Engineering, Hiroshima University, 4.Center for Northeast Asian Studies, Tohoku University, 5.Department of Earth and Planetary Science, School of Science, Institute of Science Tokyo, 6.Géosciences Montpellier, CNRS, Université Montpellier 2, 7.Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC, 8.College of Science and Engineering, Kanazawa University, 9.Graduate School of Science, Tohoku University, 10.Institute of Geology, Chinese Academy of Geological Science, 11.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Norikatsu Akizawa¹, Akira Ishikawa², Yuka Niwa², Olivier Alard³, Yoann Greau³, Naoto Hirano⁴, Shiki Machida⁵ (1.Earth Planet Sys Sci, Hiroshima Uni, 2.Sci Tokyo, 3.ANU, 4.Tohoku Uni, 5.Chiba Tech)

Hanaya Okuda¹, *Yuya Akamatsu², Ikuo Katayama³, Shiki Machida⁴, Naoto Hirano⁵, Norikatsu Akizawa³ (1.Kochi Institute for Core Sample Research, JAMSTEC, 2.Research Institute for Marine Geodynamics, JAMSTEC, 3.Earth and Planetary Systems Science Program, Hiroshima Unviersity, 4.Ocean Resource Research Center for Next Generation, Chiba Institute of Techonology, 5.Center for Northeast Asian Studies, Tohoku University)

*Yuka Niwa¹, Michiro Tsuguchi², Saori Tsuguchi², Sui Amano³, Norikatsu Akizawa⁴, Akira Ishikawa¹ (1.Earth and Planetary Science, Institute of Science Tokyo, 2.Criar LLC., 3.Japan Broadcasting Corporation, 4.Earth and Planetary System Science, Hiroshima University)

*Norikatsu Akizawa¹, Eirini Poulaki², Emily Cunningham³, Alessio Sanfilippo⁴, Tomoaki Morishita⁵, Ashutosh Pandey⁶, Manon Bickert⁷, Paola Vannucchi⁸, Chao Lei⁹, Swanne Gontharet¹⁰, Tetsu Kogiso¹¹, Akihiro Tamura⁵, Noriaki Abe¹², Agata Stefano¹³, Irina Filina¹⁴, Qi Fu¹⁵, Lorna Kearns¹⁶, Ravi Kiran Koorapati¹⁷, Filomena Loreto¹⁸, Luca Magri¹⁹, Walter Menapace²⁰, Victoria Pavlovics³, Philippe Pezard²¹, Milena Rodriguez-Pilco²², Brandon Shuck², Xiangyu Zhao²³, Emily Estes²⁴, Alberto Malinverno²⁵, Nevio Zitellini¹⁸ (1.Earth Planet Sys Sci, Hiroshima Uni, 2.Louisiana State Uni, 3.Uni Utah, 4.Uni Pavia, 5.Kanazawa Uni, 6.IISER TVM, 7.Uni Brest, 8.Uni Florence, 9.China Uni, 10.Sorbonne Uni, 11.Kyoto Uni, 12.JAEA, 13.Uni Catania, 14.Uni Nebraska, 15.Uni Houston, 16.Uni Leeds, 17.Binghamton Uni, 18.CNR-ISMAR, 19.Uni Tasmania, 20.ICP, 21.Montpellier Uni, 22.Texas A&M Uni at Galveston, 23.Shanghai Jiao Tong Uni, 24.Texas A&M Uni, 25.Columbia Uni)