在海港工程和沿海其他工程的设计和施工中,常常要求提供在历时不短于某数值T的时段内潮位连续高(低)于某数值H的出现频率,或者相反,在一定历时T和频率P的条件下要求确定乘潮水位H。在某一固定时期(如一年)内乘潮水位统计的基本问题是寻找乘潮水位出现的次数n,n是乘潮水 In the design and construction of harbor works and other coastal projects, it is often required to provide the frequency at which the tide level is continuously high (low) at a certain value H for a period of time not shorter than a certain value T or, conversely, P conditions require the determination of tide water level H. In a certain period of time (such as a year) the basic problem of tide level statistics is to find the number of times n, n is the tide of water