*Kazuhiro Misumi1, Tsubono Takaki2, Daisuke Tsumune2 (1.Planning Group, Central Research Institute of Electric Power Industry, 2.Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry)
convener:Daisuke Tsumune(Central Research Institute of Electric Power Industry), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Yuichi Onda(Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba), Kazuyuki Kita(Faculty of Science, Ibaraki University)