Vol.13-2
 

波浪追算に基づく日本海沿岸での波高の極値の推定
Estimation of Extreme Waves along the Coast of the Japan Sea Based on Wave Hindcasting

山口 正隆* ・ 畑田 佳男* ・ 中村 雄二**
Masataka YAMAGUCHI*, Yoshio HATADA* and Yuji NAKAMURA**

 

Abstract
 Wave hindcasting for 143 cases of storms which occurred from 1962 to 1991 is carried out with the use of two kinds of spectral wave prediction models to evaluate extreme waves along the coast of the Japan Sea. Wind distributions over the sea are computed with a system consisting of a spline interpolation model for irregularly-distributed atmospheric pressure data and the Bijvoet wind model. Applicability of the wave models is confirmed by close agreement between hindcasted and observed wave characteristics of recent storms. By statistical analysis of hindcasted wave data, both the most extreme wave in the past 30 years and wave height with return period of 100 years along the coast of the Japan Sea are evaluated, in which extreme wave heights range from 7.5 m to 10 m.

【キーワード】:波浪の極値,波浪追算,日本海,スペクトルモデル
Key words: extreme waves, wave hindcasting, the Japan Sea, spectral wave prediction models  


*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
**愛媛大学大学院工学研究科
Graduate Course of Civil and Ocean Engineering, Ehime University


日本自然災害学会