3:45 PM - 4:00 PM
*Yuichi Onda1, Yuki Yamanaka1, Yoshifumi Wakiyama2, Keisuke Taniguchi3, Takaaki Kubo1 (1.Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba, 2.Institute of Environmental Radioactivity, Fukushima University, 3.Fukushima Prefectural Centre for Environmental Creation)