北海港多年一遇风暴潮增减水极值推算

Reckoning of Extremal Water Level Fluctuation Caused by Storm Surge in Every Years in Beihai Port

根据北海港测站 196 5年～ 1985年的年极值增水系列和 196 7年～ 1985年的年极值减水系列 ,按照《港口工程技术规范》中规定的方法计算出北海港多年一遇的增减水位。并采用第一型极值分布方法计算不同重现期的增减水极值。结果显示 ,重现期越长 ,增减水极值越大 ,反之 。

Based on the successive data of both the highest water levels from 1965 to 1985 and lowest water levels from 1967 to 1985, the extremal water level fluctuation caused by storm surge every years in Beihai Port was reckoned using the first type distribution of extremes .The results show that the extremes is corresponding to the repetition interval. A long repetition interval is relative to a big extreme variation,vice versa.