*Hideharu KUWAHARA¹, Hirotada GOTOU², Nobuhiro OGAWA³, Asuka YAMAGUCHI³, Ko ISHIBASHI⁴, Takehiko YAGI⁵, Seiji SUGITA⁵ (1.Graduate School of Frontier Sciences, The University of Tokyo, 2.Institute for Solid State Physics, The University of Tokyo, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Planetary Exploration Research Center, Chiba Institute of Technology, 5.Graduate School of Science, The University of Tokyo)

*Mayuko SHIMIZU¹, Wataru TANIKAWA², Yohei HAMADA², Jun KAMEDA³, Asuka YAMAGUCHI⁴, Gaku KIMURA⁵ (1.Japan Atomic Energy Agency, 2.Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research, 3.Earth and Planetary System Science Department of Natural History Sciences, Graduate School of Scienc, 4.Atomosphere and Ocean Research Institute, The University of Tokyo, 5.Department of Earth and Planetary Science of the Graduate School of Science, The University of Tokyo)

*Jun KAMEDA¹, Robert HARRIS², Mayuko SHIMIZU³, Kohtaro UJIIE⁴, Akito TSUTSUMI⁵, Minoru IKEHARA⁶, Masaoki UNO⁷, Asuka YAMAGUCHI⁸, Yohei HAMADA⁹, Yuka NAMIKI⁵, Gaku KIMURA¹⁰ (1.Hokkaido University, 2.Oregon State University, 3.Japan Atomic Energy Agency, 4.University of Tsukuba, 5.Kyoto University, 6.Kochi University, 7.Tohoku University, 8.Univeristy of Tokyo, 9.Japan Agency for Marine-Earth Science and Technology, 10.University of Tokyo)

*Wataru TANIKAWA¹, Asuka YAMAGUCHI², Yohei HAMADA¹, Jun KAMEDA³, Osamu TADAI⁴, Kentaro HATAKEDA⁴ (1.JAMSTEC/KCC, 2.Tokyo University, 3.Hokkaido Univeristy, 4.Marine Works Japan. LTD)

*Wataru TANIKAWA¹, Asuka YAMAGUCHI², Yohei HAMADA¹, Jun KAMEDA³, Osamu TADAI⁴, Kentaro HATAKEDA⁴ (1.JAMSTEC/KCC, 2.Tokyo University, 3.Hokkaido Univeristy, 4.Marine Works Japan. LTD)

*Asuka YAMAGUCHI¹, Wataru TANIKAWA², Osamu TADAI³, Jun KAMEDA⁴ (1.Atmosphere and Ocean Research Institute, the University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology, Kochi Instutute for Core Sample Research, 3.Marine Works Japan, 4.Earth and Planetary System Science Department of Natural History Sciences, Graduate School of Scienc)

*Juichiro ASHI¹, Akiko OMURA¹, Natsumi OKUTSU¹, Asuka YAMAGUCHI¹, Tomohisa IRINO², Masafumi MURAYAMA³, Ken IKEHARA⁴, Yasuyuki NAKAMURA⁵ (1.The University of Tokyo, 2.Hokkaido University, 3.Kochi University, 4.AIST, 5.JAMSTEC)

*Juichiro ASHI¹, Akiko OMURA¹, Natsumi OKUTSU¹, Asuka YAMAGUCHI¹, Tomohisa IRINO², Masafumi MURAYAMA³, Ken IKEHARA⁴, Yasuyuki NAKAMURA⁵ (1.The University of Tokyo, 2.Hokkaido University, 3.Kochi University, 4.AIST, 5.JAMSTEC)

*Natsumi OKUTSU¹, Juichiro ASHI¹, Akiko OMURA¹, Asuka YAMAGUCHI¹, Yusuke SUGANUMA², Masafumi MURAYAMA³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.National institute of Polar Research, 3.Center for Advanced Marine Core Research , Kochi University)

*Kiyokazu OOHASHI¹, Fabbri Olivier², Asuka YAMAGUCHI³ (1.Graduate School of Science and Engineering, Yamaguchi University, 2.University of Franche-Comte, Besancon, France, 3.Atomosphere and Ocean Research Institute, The University of Tokyo)

*Kiyokazu OOHASHI¹, Fabbri Olivier², Asuka YAMAGUCHI³ (1.Graduate School of Science and Engineering, Yamaguchi University, 2.University of Franche-Comte, Besancon, France, 3.Atomosphere and Ocean Research Institute, The University of Tokyo)

*Rina FUKUCHI¹, Asuka YAMAGUCHI¹, Yuzuru YAMAMOTO², Juichiro ASHI¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))