*Yupan Zhang1, Yuichi Onda1, Xinchao Sun2, Takashi Gomi3 (1.Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba, Ibaraki, Japan, 2.Institute of Surface-Earth System Science, Tianjin University, Tianjin , PR China, 3.Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo , Japan)
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)