EXAMINATION OF SIMPLE ICE JAMS CALCULATION MODEL

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  • 寒冷地河川における簡易的なアイスジャム計算モデルに関する検討

Abstract

 This study aims to evaluate and to clarify a subject in a developed ice jams calculation model on ice-covered rivers. Calculation load of this model was made small for global scale calculation models. This model was evaluated by reproducibility of ice jams phenomenon in the Shokotsu river. Composition of this model is river water flow, river ice flow and ice jams, ice sheets formation and melt, water temperature. This calculation model can express river ice flow and river ice deposition. On the other hand, the reproducibility of a water level is low on site where river ice area is calculated smaller than the actual condition. As this reason, this model is not considering the river ice break-up phenomenon.

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