*Yoichi Usui¹, Toshitsugu Yamazaki², Junichiro Ohta^3,4,1, Honami Sato⁴, Akira Ishikawa⁵ (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.FRCER, The University of Tokyo, 4.ORCeNG, Chiba Institute of Technology, 5.Department of Earth and Planetary Sciences, Tokyo Institute of Technology)

*Norikatsu Akizawa¹, Kazuhito Ozawa², Simon Richard Wallis², Akihiro Tamura³, Akira Ishikawa⁴, Tetsu Kogiso⁵ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.Faculty of Geosciences and Civil Engineering, Kanazawa University, 4.Department of Earth and Planetary Sciences, Tokyo Institute and Technology, 5.Graduate School of Human and Environmental Studies, Kyoto University)

*Yuri Mitsude¹, Tatsuji Nishizawa², Hitomi Nakamura^3,4,5, Tatiana Churikova⁶, Boris Gordeychik⁷, Akira Ishikawa³, Ryo Fujita³, Hikaru Iwamori^1,3,8, Shuhei Sakata¹ (1.Earthquake Research Institute, The University of Tokyo, 2.Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology, 3.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 4.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 5.Chiba Institute of Technology, ORCeNG, 6.Institute of Volcanology and Seismology, Far East Branch, Russian Academy of Sciences, 7.Institute of Experimental Mineralogy, Russian Academy of Sciences, 8.research institute for marine geodynamics, Japan Agency for Marine-Earth Science and Technology)

*Tatsuya Tamura¹, Tetsuya Yokoyama¹, Akira Ishikawa¹ (1.Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology)

*Ryo Fujita¹, Akira Ishikawa¹, Tetsuya Yokoyama¹, Michael O. Garcia² (1.Tokyo Institute of Technology, 2.University of Hawaii)

Natsuki Nakamura¹, *Akira Ishikawa¹, Tetsuya Yokoyama¹ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology)

*Shun Nakano¹, Akira Ishikawa¹, Yuichiro Ueno¹, Tetsuya Yokoyama¹ (1.Tokyo Institute of Technology)

*Tomomi Kani¹, Yukio Isozaki², Keiji Misawa³, Akira Ishikawa⁴, Shigekazu Yoneda⁵ (1.Department of Earth and Environmental Sciences, Kumamoto University, 2.The University of Tokyo, 3.National Institute of Polar Research, 4.Tokyo Institute of Technology, 5.National Museum of Nature and Science )

*Takashi Sano¹, Maria Luisa Tejada², Clive R. Neal³, Millard Coffin⁴, Masao Nakanishi⁵, Peter J. Michael⁶, Jörg Geldmacher⁷, Takeshi Hanyu², Seiichi Miura², Christian Timm⁸, Anthony A. P. Koppers⁹, Daisuke Suetsugu², Takashi Tonegawa², Akira Ishikawa¹⁰, Kenji Shimizu², Paterno Castillo¹¹ (1.National Museum of Nature and Science, 2.Japan Agency for Marine-Earth Science and Technology, 3.University of Notre Dame, USA, 4.University of Tasmania, Australia, 5.Chiba University, 6.The University of Tulsa, USA, 7.GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany, 8.GNS Science, New Zealand, 9.Oregon State University, USA, 10.Tokyo Institute of Technology, 11.Scripps Institution of Oceanography, UCSD, USA)

*Yuki Masuda¹, Tetsuya Yokoyama¹, Satoki Okabayashi², Akira Ishikawa¹ (1.Tokyo Institute of Technology Department of Earth and planetary Sciences, 2.Kwansei Gakuin university Department of Applied Chemistry for Environment)