2:15 PM - 2:30 PM
*Takeshi Hasegawa1, Bunta Kikuchi1, Shibata Shohei1, Yuhji Yamamoto2, Takumi Imura3, Masao Ban3, Makoto Okada1, Tatsuro Aibe1 (1.Department of Earth Sciences, College of Science, Ibaraki University, 2.Center for Advanced Marine Core Research, Kochi University, 3.Department of Earth and Environmental Sciences, Faculty of Science, Yamagata University)