2:45 PM - 3:00 PM
*Gaku Kimura1, Asuka Yamaguchi2, Yohei Hamada3, Suguru Yabe4 (1.Tokyo University of Marine Science and Technology, 2.Atomosphere and Ocean Research Institute, The University of Tokyo, 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 4.Japan Agency for Marine-Earth Science and Technology)