DISASTER MITIGATION MEASURES AGAINST STORM SURGES AND HIGH WAVES IN SHIMIZU PORT

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  • 清水港における高潮高波の減災対策について

Abstract

<p> Typhoon No. 21 in 2017 and Typhoon No. 19 in 2019 passing through Suruga Bay caused severe damages around Shimizu port such as the outflow of harbor cargos to the sea. In this study, the factors of the inundation were analyzed and disaster mitigation measures were examined by an inundation prediction model for the purpose of reducing damages to the port and improving disaster prevention capabilities. Resultantly, it is confirmed that the swell propagating to the port is one of the main factors of inundation in addition to high waves and storm surges caused by typhoon. Numerical simulations of inundation prediction were conducted to evaluate the disaster mitigation measure by using a Boussinesq equation model which can well reproduce the measured sea level in Typhoon No. 19 in 2019. As a result, the seawall on the wharf indicated the reduction effect of the overflow on the wharf.</p>

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