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福島長期環境動態研究,7; F-TRACEプロジェクトの現状

Long-term assessment of transport of radioactive contaminant in the environment of Fukushima (F-TRACE Project), 7; Status of the project

飯島 和毅 ; 新里 忠史 ; 鶴田 忠彦 ; 北村 哲浩  

Iijima, Kazuki; Niizato, Tadafumi; Tsuruta, Tadahiko; Kitamura, Akihiro

原子力機構が進めてきた福島長期環境動態研究における森林, 河川, ダム等における現地調査結果と、土壌流亡解析, 河川水系移動解析等の解析結果を組み合わせることで、請戸川水系における放射性セシウムの移動挙動を定量的に評価できた。放射性セシウムの多くは大柿ダム下流域から流出したものと考えられた。

Transport behavior of radioactive cesium in the Ukedo river system was quantitatively evaluated by combining field investigation in forests, rivers and a dam lake with analytical results by means of soil loss and transport in the river simulations. It can be considered that most of the radioactive cesium was eroded from the lower land than the dam lake.

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