*Masayuki Obayashi¹, Hiroko Sugioka², Yann Hello³, Frederik J Simons⁴, Yongshun J Chen⁵, Guust Nolet³ (1.Japan Agency for Marine-Earth Science and Technology, 2. Department of Planetology, Kobe University, 3.Geoazur, Universite de Nice, 4.Department of Geosciences, Princeton University, 5.School of Ocean Science and Engineering, SUSTech)

*Yoshio Fukao¹, Hiroko Sugioka⁵, Aki Ito¹, Takashi Tonegawa¹, Mikiya Yamashita⁴, Hajime Shiobara², Tatsuya Kubota³, Tatsuhiko Saito³ (1.Japan Agency for Marine-Earth Science & Technology, 2.University of Tokyo, 3.National Research Institute of Earth Science and Disaster Resillence , 4.National Institute of Advanced Industrial Science and Technology, 5.Kobe University)

*Daisuke Suetsugu¹, Hajime Shiobara², Hiroko Sugioka³, Aki Ito¹, Takehi Isse², Yasushi Ishihara¹, Satoru Tanaka¹, Masayuki Obayashi¹, Takashi Tonegawa¹, Junko Yoshimitsu¹, Takumi Kobayashi³ (1.institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, 2.Earthquake Research Institute, the University of Tokyo, 3.Department of Planetrology, Graduate School of Science Kobe University)

*Yuki Kawano¹, Takehi Isse¹, Akiko Takeo¹, Hitoshi Kawakatsu¹, Hajime Shiobara¹, Nozomu Takeuchi¹, Hiroko Sugioka², YoungHee Kim³, Hisashi Utada¹, Sang-Mook Lee³ (1.Earthquake Research Institute, The University of Tokyo, 2.Kobe University, 3.Seoul National University)

*Takehi Isse¹, Hitoshi Kawakatsu¹, Hajime Shiobara¹, Nozomu Takeuchi¹, Hiroko Sugioka², Younghee Kim³, Hisashi Utada¹, Sang-Mook Lee³, Kazunori Yoshizawa⁴ (1.Earthquake Research Institute, the University of Tokyo, 2.Department of Planetology, Kobe University, 3.Seoul National University, 4.Faculty of Science, Hokkaido University)

*Hajime Shiobara¹, Hisashi Utada¹, Seung-Sep Kim², YoungHee Kim³, Kiyoshi Baba¹, Takehi Isse¹, Hogyum Kim³, HyeJeong Kim¹, Hiroko Sugioka⁴, Nozomu Takeuchi¹, Yuki Kawano¹, Hitoshi Kawakatsu¹, Sang-Mook Lee³, Onboard scientists of 2018/2019 Oldest cruises (1.Ocean Hemisphere Research Center, Earthquake Research Institute, University of Tokyo, 2.Chungnam National University, 3.Seoul National University, 4.Kobe University)

*Nozomu Takeuchi¹, Hitoshi Kawakatsu¹, Hajime Shiobara¹, Takehi Isse¹, Hiroko Sugioka², Aki Ito³, Hisashi Utada¹ (1.Earthquake Research Institute, University of Tokyo, 2.Kobe University, 3.JAMSTEC)

Yasutomo Seto¹, *Hiroko Sugioka¹, Tsutomu Takahashi², Yojiro Yamamoto² (1.Kobe University, 2.JAMSTEC)

*Satoshi Ide¹, Miguel Sáez², Sergio Ruiz², Hiroko Sugioka³, Matthew Miller⁴ (1.Department of Earth an Planetary Science, University of Tokyo, 2.Department of Geophysics, University of Chile, Chile, 3.Department of Planetology, Kobe University, 4.Department of Geophysics, University of Concepción, Chile)

*Yusuke Yamashita¹, Masanao Shinohara², Hiroko Sugioka³, Aki Ito⁴, Tsutomu Takahashi⁴, Daisuke Suetsugu⁴ (1.Disaster Prevention Research Institute, Kyoto University, 2.Earthquake Research Institute, the University of Tokyo, 3.Graduate School of Science, Kobe University, 4.Japan Agency for Marine-Earth Science and Technology)

*Hiroko Sugioka¹, Natsuo Nemoto¹ (1.Kobe University)