*Gen Shimoda¹, Tetsu Kogiso² (1.Geological Survey of Japan, AIST, 2.Graduate School of Human and Environmental Studies, Kyoto Univ.)

*Yusuke Nakanishi¹, Norimasa Ozaki^1,2, Takayoshi Sano², Yusuke Seto³, Naotaka Tomioka⁴, Ryosuke Kodama^1,2 (1.Graduate School of Engineering Osaka University, 2.Institute of Laser Engineering, Osaka University, 3.Graduate School of Science Osaka Metropolitan University, 4.Japan Agency for Marine-Earth Science and Technology Kochi Core Center)

*Mimi Chen^1,2, Katsuhiko Suzuki¹, Maria Luisa G. Tejada¹, Chang Qing¹, Wei Tian¹, Yuki Hibiya³, Junko Kikuchi¹ (1.Japan Agency for Marin-Earth Science and Technology, 2.Peking University, 3.The University of Tokyo)

*Katsuhiko Suzuki¹, Taku Tsuchiya² (1.Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology, 2.Geodynamics Research Center, Ehime University)

*Yongfeng Zhu¹ (1.School of Earth and Space Sciences, Peking University)

*Ryu Sato¹, Akira Ishikawa¹, Yuichiro Ueno¹, Tetsuya Yokoyama¹, Marco Fiorentini² (1.Tokyo Institute of Technology, 2.University of Western Australia)

Yuta Ihara¹, *Akira Ishikawa¹, Kenji Shimizu², Yuichiro Ueno¹, Tetsuya Yokoyama¹ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Kochi Institiute of Core Research, JAMSTEC)

*Arshad Ali¹, Mohamed El-Ghali¹, Mohamed Moustafa¹, Iftikhar Abbasi¹ (1.Sultan Qaboos University)

*Eman Saad¹, Kazuhito Ozawa², Takeshi Kuritani³, Ali Khudeir¹ (1.Geology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan, 3.Department of Earth and Planetary Science, Hokkaido University, Hokkaido, Japan.)