*Norio Shigematsu¹, Rupert Sutherland², John Townend³, Virginia Toy⁴, Naoki Kato⁵, yusuke kometani⁶, Weiren Lin⁷, Osamu Nishikawa⁸, Hiroshi Mori¹, DFDP-2 Science Team (1.Research Institute of Earthquake and Volcano Geology, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.GNS Science New Zealand, 3.Victoria University of Wellington, 4.The University of Otago, 5.Oosaka University, 6.Yamaguchi University, 7.Japan Agency for Marine-Earth Science and Technology, 8.Akita University)