11:30 AM - 11:45 AM
*Yuichi Onda1, Keisuke Taniguchi2, Kazuya Yoshimura3, Yoshifumi Wakiyama4 (1.Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba, 2.Centre for Environmental Creation, Fukushima Prefecture, 3.Japan Atomic Energy Agency, 4.Insititute of Environmental Radioactivity, Fukushima University)