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操上 広志; 北村 哲浩; Yokuda, Satoru*; 大西 康夫*
Journal of Environmental Radioactivity, 137, p.10 - 17, 2014/11
被引用回数:32 パーセンタイル:67.62(Environmental Sciences)We performed a simulation of sediment and Cs behavior in the Ogaki Dam Reservoir during a heavy rainfall event occurred in 2013. One-dimensional river and reservoir simulation scheme TODAM was applied for calculating the time dependent migration of sediment and Cs in dissolved and sediment-sorbed forms in the reservoir. Continuous observational data achieved in upper rivers were used as the input boundary conditions for the simulation. The simulation results were compared with the continuous data achieved in the lower river and we confirmed the predicted values of sediment and Cs in sediment-sorbed form at the exit of reservoir satisfactorily reproduced the observational data. The simulation result of a heavy rainfall event shows that the reservoir plays an important role to delay and buffer the contamination movement in heavy rainfall events.