Abstract
　The aim of this paper is to estimate maximum wave height distribution generated by huge monsoons and typhoons of the past fifty years in the Western Seto Inland Sea from wave hindcasting on the basis of a spectral wave prediction model in shallow water. First, the applicability of the model is confirmed by the comparison of the computed and observed wave heights for three monsoons and three typhoons in recent years. Second, the wave hindcasting is carried out for five huge typhoons which attacked the concerned area in the past fifty years. Alongshore distribution of maximum wave height generated by severe storms in the past fifiy years is evaluated from the abovementioned results and compared with that of design wave heigh of the coastal structures in the area.

【キーワード】：異常気象擾乱, 波浪追算, 波高の極値

*愛媛工学部海洋工学科
Department of Ocean Engineering, Faculty of Engineering, Ehime Univ.
**出雲グリーン株式会社
Izumo Green Inc.
***愛媛大学大学院工学研究科
Craduate Course of Ocean Engineerdng, Ehime Univ.