ALONGSHORE DISTRIBUTION OF EXTREMES OF TYPHOON-GENERATED WAVES AROUND THE PACIFIC COAST OF WESTERN JAPAN ON THE BASIS OF WAVE HINDCASTING

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  • 波浪推算に基づくわが国太平洋岸西部での台風発生最大波高の沿岸分布の推定
  • ハロウ スイサン ニ モトズク ワガクニ タイヘイヨウガン セイブ デ ノ タ

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Abstract

In this paper, an alongshore distribution of extremes of typhoon-generated waves around the Pacific coast of Western Japan is re-evaluated on the basis of a spectral wave prediction model for calculating shallow-water waves at a fixed location. First, the accuracy of the model is examined by comparing the computed and observed significant wave heights during many typhoons in recent years. Second, from wave hindcasting for 101 typhoons which attacked Japanese coasts in the past 50 years, alongshore distribution of maximum significant wave height and wave height for return period of 50 years is estimated and compared with the distribution of design wave height for coastal structures. The effects of the wave prediction model and mesh size used in the computations on maximum wave height are discussed by comparing the present results with the results previously estimated by the authors.

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