福島長期環境動態研究,13; 流域水循環解析モデルによる降雨時の水・土砂・放射性セシウム流出応答解析

Long-term assessment of transport of radioactive contaminant in the environment of Fukushima (F-TRACE Project), 13; Numerical analysis of water, sediment and radioactive cesium transport during rainfall events in a catchment scale

操上 広志  ; Malins, A.  ; 北村 哲浩   ; 森 康二*; 多田 和広*; 小林 嵩丸*

Kurikami, Hiroshi; Malins, A.; Kitamura, Akihiro; Mori, Koji*; Tada, Kazuhiro*; Kobayashi, Takamaru*

流域水循環解析モデルGETFLOWSに、表層流に伴う土壌の侵食・堆積・輸送およびそれに伴う放射性セシウム動態を加えたモデルを追加し、福島県浜通りの複数河川流域に適用した。解析結果は河川水の濁度や放射性セシウム濃度の実測値と概ね良い一致を得た。

We added models of erosion, transport and deposition of sediment due to surface flow and corresponding radioactive cesium transport into GETFLOWS, GEneral purpose Terrestrial fluid-FLOW Simulator. The application of the model showed results in good agreement with the monitored turbidity and radioactive cesium concentrations in rivers.