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应用能谱分析方法对表层海水温度场及其某些影响因子进行了周期分析,得出了各预报海区表层水温场的主要振动周期:东海及外缘海域具有显著的6.7年和2.2年周期,南海东北部有2.3年周期,东太平洋赤道区有3.8年和3.2年周期;以及西太平洋副热带高压面积指数的10.7年、3.6年和21.3年的显著周期等。这一结果为海水温度的分析和预报业务提供了重要依据。
The surface water temperature field and some of its influencing factors were periodically analyzed by using the method of energy spectrum analysis. The main vibration periods of the surface water temperature field in each sea area were obtained. The sea areas in the East China Sea and the outer margin had significant periods of 6.7 years and 2.2 years, 3.3 years in the northeastern South China Sea, 3.8 years in the equatorial Pacific Ocean and 3.2 years in the equatorial Pacific Ocean and 10.7 years, 3.6 years and 21.3 years in the western Pacific subtropical high. This result provides an important basis for the analysis and forecasting of seawater temperature.