Abstract
　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.

【キーワード】：波浪追算，スペクトルモデル，波浪の極値，波侯，西湘海岸BR> Key words: wave hindcast, spectral model, extreme waves, wave climate, Seisho Coast

*愛媛大学工学部土木海洋工学科
Department of Civil and Ocean Engineering, Faculty of Engineering, Ehime University
**NTT
Nippon Telegraph and Telephone Corporation
***愛媛大学大学院工学研究科
Graduate Course of Ocean Engineering, EhimeUniversity