*Michael STRASSER¹, Hiske FINK², Ken IKEHARA³, Toshiya KANAMATSU⁴, Yoshitaka NAGAHASHI⁵, Gerold WEFER² (1.ETH Zurich, 2.MARUM, University Bremen, 3.Geological Survey of Japan, AIST, 4.JAMSTEC, 5.Fukushima University)

*Takeshi NAKAJIMA¹, Tohru DANHARA², Tohru YAMASHITA², Hideki IWANO², Hirokuni ODA¹, Toshiya KANAMATSU³, Xixi Zhao⁴ (1.Geological Survey of Japan, AIST, 2.Kyoto Fission-Track Co.Ltd., 3.JAMSTEC, 4.University of California Santa Cruz)

*Ken IKEHARA¹, Kazuko USAMI¹, Toshiya KANAMATSU² (1.Geological Survey of Japan, AIST, 2.CEAT, JAMSTEC)

*Cecilia MCHUGH¹, Toshiya KANAMATSU², Leonardo SEEBER³, Marie-helene CORMIER⁴, Richard BOPP⁵, Ken IKEHARA⁶, Kazuko USAMI⁶ (1.Queens College, C.U.N.Y., USA, 2.JAMSTEC, Japan, 3.Lamont-Doherty Earth Observatory, USA, 4.University of Rhode Island, USA, 5.Rensselaer Polytechnic Institute, USA, 6.Geological Survey of Japan, AIST)

*Kazuko USAMI¹, Ken IKEHARA¹, Toshiya KANAMATSU², Cecilia McHugh³ (1.Geological Survey of Japan, AIST, 2.JAMSTEC, 3.Queens College, C.U.N.Y)

*Toshiya KANAMATSU¹, Kazuko USAMI², Ken IKEHARA², Cecilia McHugh³ (1.JAMSTEC, 2.AIST, 3.City University of New York)

*Kazuno ARAI¹, Hajime NARUSE², Miwa YOKOKAWA³, Tomohisa IRINO⁴, Ken IKEHARA⁵, Yu SAITOH⁶, Akira HAYASHIDA⁷, Toshiya KANAMATSU⁸ (1.Saitama University, 2.Kyoto University, 3.Osaka Institute of Technology, 4.Hokkaido University, 5.AIST, 6.Kochi University, 7.Doshisha University, 8.JAMSTEC)

Minami FUJII¹, *Kiichiro KAWAMURA², Kazumasa OGURI³, Takashi TOYOFUKU³, Toshiya KANAMATSU³, Masafumi MURAYAMA⁴, Kazuno ARAI⁵ (1.Yamaguchi University/JAMSTEC, 2.Yamaguchi University/Present:Aratani CEC., 3.JAMSTEC, 4.Kochi University, 5.Saitama University)