Author(s): H. T. Shen; L. Liu; K. Hoshi; Y. Watanabe; K. Hirayama
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Keywords: No Keywords
Abstract: A study on the breakup ice jam occurred in the Shokotsu River in 1995 is presented. This study investigated the reason for the occurrence of the ice jam by analyzing the available hydro-meteorological data as well as hydraulic and geometric characteristics of the River. This analysis showed that the breakup of the ice cover was triggered by a sudden increase in basin runoff produced by rainfall during a warm spell. The jam was initiated at a section where there are rapid reductions in channel slope, flow velocity and top width. Numerical simulation was carried out to analyze the dynamics of the ice jam formation and evolution to supplement the limited information obtained from field observations.
Year: 2000