西湘海岸における波浪の極値と波候の推定

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  • Estimation of Extreme Waves and Wave Climate along the Seisho Coast

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Spectral wave prediction models in shallow water are applied to hindcast not only for severe waves generated during some typhoons in recent years but also for wave conditions over one year at a prescribed location in the Kanto sea area connected to the Pacific Ocean. The validity of the models are verified by the comparison between computations and observations for the time variations of significant waves at several observation points and long-term wave conditions at Hiratsuka. Next, the most extreme wave heights generated by typhoons in the past 55 years and the long-term wave conditions at the selected points along the Seisho Coast in Sagami Bay of the Kanto sea area are estimated on the basis of statistical analysis of wave data hindcasted by the present models. Spatial distributions of maximum heights of typhoon-generated waves over 55 years are also evaluated.

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