[M-AG42] Environmental Radioactivity Dynamics - Challenges Following the Fukushima Daiichi NPS Accident -

[MAG42-09] Estimation of groundwater-derived ¹³⁷Cs discharge flux using Ra isotopes in the sea area surrounding Fukushima Daiichi Nuclear Power Plant

*HIROUMI Iino¹, Daisuke Tsumune¹, Hiroaki Kato², Yuichi Onda², Shigeyoshi Otosaka³ (1. University of Tsukuba, 2. Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 3. Atmosphere and Ocean Research Institute, The University of Tokyo)

Keywords:Fukushima Daiichi Nuclear Power Plant accident, Cs-137, Radium isotopes, groundwater