*Itaru Mitsukawa¹, Akira Miyake¹, Yohei Igami¹, Tetsu Kogiso¹, Norikatsu Akizawa², Akira Tsuchiyama^3,4, Megumi Matsumoto⁵, Junya Matsuno³, Kentaro Uesugi⁶, Masahiro Yasutake⁶, Akihisa Takeuchi⁶, Shota Okumura¹ (1.Kyoto University, 2.University of Tokyo, 3.Ritsumeikan University, 4.Guangzhou Institute of Geochemistry, 5.Tohoku University, 6.JASRI/SPring-8)

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

*Takaaki Moriguchi¹, Kyoko Okino¹, Norikatsu Akizawa¹, Shiki Machida² (1.Atomosphere and Ocean Research Institute, University of Tokyo, 2.Chiba Institute of Technology)

*Norikatsu Akizawa¹, Kazuhito Ozawa¹, Tetsu Kogiso², Akira Ishikawa³, Simon Richard Wallis⁴, Tatsuhiko Kawamoto⁵, Akihiro Tamura⁶, Tomoaki Morishita⁶ (1.Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Graduate School of Human and Environmental Studies, Kyoto University, 3.Department of Earth and Planetary Sciences, Tokyo Institute and Technology, 4.Department of Earth and Planetary Science, University of Tokyo, 5.Department of Geosciences, Faculty of Science, Shizuoka Universit, 6.School of Geoscience and Civil Engineering, Kanazawa University)

*Yuka Niwa¹, Akira Ishikawa¹, Norikatsu Akizawa² (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Naoto Hirano^1,2, Kazuto Mikuni², Yosuke Shimbo², Norikatsu Akizawa³, Shiki Machida⁴ (1.Center for Northeast Asian Studies, Tohoku University, 2.Graduate School of Science, Tohoku University, 3. Atmosphere and Ocean Research Institute, the University of Tokyo, 4.Ocean Resources Resurech Center for Next Generation, Chiba Institution of Technology)