中文摘要：

根据渤海10个站和大连、烟台共12个站同步一年的潮汐资料，采用调和分析和响应分析方法，分离出逐时的增减水。计算表明，对大多数海港，依据两种方法得到的增减水量值是一致的，对于非线性效应明显的港口，两者的结果相差较大。同时，还分析了渤海几次较强增减水过程的变化规律。

英文摘要：

Based on the synchronous tidal data observed for a year at the 12 stations of the Bohai Sea, inclu ding Dalian and Yantai, the hourly sea-level increments or decrements caused by meterological factors are separated from the tidal data respectively by means of the harmonic analysis method and the response method. It is shown from the related calculation that the 2 methods are consistent with each other to calcu-late the hourly increments or decrements at the most of the 12 stations. However there is obvious difference in the results respectively from the 2 methods if the nonlinearity effects become greater at the stations. In addition, a few of the abnormal sea level events are analyzed to learn the regularity of the sea-level fluctuations.