convener:Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), convener:Osamu Fujiwara(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Yohei Hamada(Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research), convener:Junichiro Kuroda(Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo), Chairperson:Takehiro Hirose(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Toshiro Yamanaka(Tokyo University of Marine Science and Technology), Maria Luisa Tejada(Volcano and Earth Interior Research Center, Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology)