12:00 PM - 12:15 PM
*Yoshifumi WAKIYAMA1, Yuichi ONDA1, Valentin Golosov2, Alexei Konoplev3, Tsugiko TAKASE2, Kenji NANBA3 (1.Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 2.Department of Geography, Moscow State University, 3.Institute of Environmental Radioactivity Fukushima University)