*Kenta Ueki¹, Minami Kazuki², Akimichi Taketa², Tsuyoshi Iizuka³, Sanshiro Enomoto⁴, Nozomu Takeuchi², Hiroyuki Tanaka² (1.Japan Agency for Marine-Earth Science and Technology, 2.Earthquake Research Institute, the University of Tokyo, 3.Department of Earth and Planetary Science, The University of Tokyo, 4.University of Washington, Department of physics)

*Toshiki Ohtaki¹, Satoru Tanaka², Satoshi Kaneshima³, Weerachai Siripunvaraporn^4,5, Songkhun Boonchaisuk^5,6, Sutthipong Noisagool^4,5, Kenji Kawai⁷, Taewoon Kim², Yuki Suzuki⁷, Yasushi Ishihara², Koji MIYAKAWA⁸, Nozomu Takeuchi⁸, Hitoshi Kawakatsu⁸ (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 2.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University, 4.Faculty of Science, Mahidol University, Kingdom of Thailand, 5.ThEP Center, Commission on Higher Education, Kingdom of Thailand, 6.Geoscience Program, Mahidol University, Kingdom of Thailand, 7.Graduate School of Science, University of Tokyo, 8.Earthquake Research Institute, University of Tokyo)

*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)

*Hyunsun Kang¹, Younghee Kim¹, Shu-Huei Hung², Pei-Ying Patty Lin³, Takehi Isse⁴, Hajime Shiobara⁴, Hitoshi Kawakatsu⁴, Sang-Mook Lee¹, Hisashi Utada⁴, Nozomu Takeuchi⁴ (1.Seoul National University, 2.National Taiwan University, 3.National Taiwan Normal University, 4.Earthquake Research Institute, The University of Tokyo)

*Akiko Toh¹, Wan-Jou Chen², Nozomu Takeuchi⁴, Doug Dreger³, Wu-Cheng Chi², Satoshi Ide¹ (1.EPS, Univ. of Tokyo, 2.IES, Academia Sinica, 3.BSL, UC Berkeley, 4.ERI, Univ. of Tokyo)