Author(s): Tohru Kanda
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Keywords: No Keywords
Abstract: It is within the range of possibility that the flood flow travels down and the storm surge runs up the river with a considerably short time-lag, because the typhoons are occasi onally accompanied by both the heavy rainfalls in the river basin and the storm surges on the coast or in the bay. Therefore, some special consideration should be given to such the si mul taneous occurrence of flood flow and storm surge in planning the levees of river channels in the lower reach. In order to evaluate quanti tatively the effect of its concurrence on the highest water level along the river, the numerical simulations of un- steady flows are performed. The results of computation indicate that the highest water levels depend significantly upon the length of time-lag between flood flow and storm surge. The characteristics of the highest water levels would certainly result from the interaction between flood flow and storm surge. Based on the close analyses of the running-up behavior of storm surges, the author examines the mechanism of its interaction and accounts for those charac teristics.
Year: 1985