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应用回归分析和切比雪夫拟合二种方法，根据验潮资料研究了华南沿海海平面的变化速率，进而结合区域构造研究了近２０年来华南海平面的变化特征，并讨论了将其用于地震趋势分析的可能性。结果表明，华南海平面平均变化速率为１．１ｍｍ／ａ，且呈上升趋势。大致可分为三个较显著的上升区，近年来多次发生中强震的粤闽沿海及粤桂琼沿海即占了其中两区，此现象很值得深入研究。
Using regression analysis and Chebyshev fitting method, the change rate of the sea level along the coast of South China was studied based on the tide-tide data, and then the variation characteristics of South China sea level over the past 20 years were studied in combination with regional tectonics. Earthquake trend analysis possibilities. The results show that the average rate of change of the sea level in South China is 1.1 mm / a, and it shows an upward trend. It can be roughly divided into three more prominent ascending areas. In recent years, the coastal areas of Guangdong, Fujian and Guangdong-Guiqiong, where many moderate-strong earthquakes occurred frequently, account for two of these areas. This phenomenon deserves further study.