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本文利用由Ｇｅｏｓａｔ卫星高度计ＥＲＭＴ２－ＧＤＲｓ共２．３ａ数据得到的海面高度异常时间序列对黑潮流系的变化作进一步分析。季节平均的海面高度异常表明，黑潮延伸体与黑潮大弯曲之间有相互关联的变化关系。黑潮两侧相对水位差可以表示流量的相对变化特征，对７个断面相对流量分析得出黑潮延伸体及日本以南黑潮流量有较强的季节变化特征，吐噶喇海峡以东与台湾省东北黑潮流量年际变化具有相同相位，黑潮出现大弯曲时流量减少，而东海断面流量在大弯曲出现时增强，菲律宾以东黑潮流量在ＥＮＳＯ期间减弱，ＥＮＳＯ消失后增强，对５０个时间序列的海面高度异常场进行了ＥＯＦ分析，得到前三个ＥＯＦ分量分别占总方差的２５．３％、１７．１％和１３．７％，分别代表黑潮弯曲模态、ＥＮＳＯ模态及季节变化模态。季节变化特征在秋冬之交出现正异常最大，春夏之交出现负异常最大，这种变化规律与东亚季风有关。
In this paper, the variation of the Kuroshio current system is further analyzed by using the time series of sea surface anomalies obtained from a total of 2.3a data of Geosat satellite altimeters ERMT2-GDRs. The seasonal mean sea level anomaly shows that there is a correlation between the Kuroshio extension and the Kuroshio big bend. The relative water level difference between the two sides of the Kuroshio can represent the relative variation of the flow rate. The analysis of the relative flow of the seven sections shows that the Kuroshio extension and the Kuroshio current in the south of Japan have stronger seasonal variation characteristics. The interannual variations of Kuroshio flow in northeastern Taiwan have the same phase, the flow decreases when the Kuroshio appears large bending, while the flow in the East China Sea increases when large bends occur. The Kuroshio flow to the east of the Philippines weakens during ENSO and ENSO disappears, EOF analysis of sea surface anomalies over 50 time series shows that the first three EOF components account for 25.3%, 17.1% and 13.7% of the total variance, respectively, representing the Kuroshio bending mode, the ENSO mode Modality and seasonal changes. The seasonal variation has the largest positive anomaly at the turn of the fall and winter, and the largest negative anomaly at the turn of spring and summer, which is related to the East Asian monsoon.