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旨在分析太平洋地区的月均海平面的变化，探讨其物理过程。文中共分析了５４个长期站的海平面资料，对５４个站分别建立了随机动态非线性模型，求得了太平洋地区的海平面平均上升速率为０．１６ｃｍ／ａ。并对太平洋东西岸各站及海洋中观测站海平面资料相对于ＴＡ－ＬＡＲＡ站海平面资料进行了交叉谱分析，结论是，太平洋月均海平面４５个月的低频振动存在着以下的规律：由东太平洋（１５°～２５°Ｎ）开始，向西传播至太平洋西岸后，转向南，在５°Ｎ～２５°Ｓ之间，转向东到达太平洋东岸后北上形成逆时针循环。在埃尔尼诺事件的低纬典型区，月平均海面振动中年周期振动的主导作用下降，甚至失去主导作用，而与埃尔尼诺事件的准周期相近的周期振动的作用增大。
Aims to analyze the monthly average sea level changes in the Pacific Ocean and explore its physical processes. In this paper, the sea level data of 54 long-term stations are analyzed and a stochastic dynamic nonlinear model is established for 54 stations. The average sea-level rise rate of the Pacific Ocean is 0.16 cm / a. The cross-spectral analysis of the sea level data of stations in the east and west coasts of the Pacific Ocean and the sea level at sea level relative to the data of the sea level at TA-LARA station concluded that the 45-month low frequency vibration in the Pacific mean sea level has the following laws: Starting from the eastern Pacific Ocean (15 ° ~ 25 ° N), spreading westwards to the Pacific West Bank, it turns south and travels eastward to the east coast of the Pacific to form a counterclockwise circulation between 5 ° N and 25 ° S. In the low latitude typical area of El Niño event, the dominant role of the monthly average sea-surface vibration in the mid-annual cycle decreases or even loses the dominant effect, while the periodic vibration with the quasi-periodic El Niño event increases.