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基于1997年10月至2005年10月海视宽视野水色扫描仪(SeaWiFS)的遥感观测数据,利用去除趋势波动分析法(DFA)分析南海表层叶绿素的时间相关性和分形标度特征．计算结果表明:南海各网格点表层叶绿素时间序列普遍存在较强的长程相关性,标度指数在0．5与1．14之间,平均值为0．79．吕宋岛西北面、巽他大陆架北部等上升流海域标度指数较大,表层叶绿素的持续性较强;吕宋岛西南面、海南岛东面和南海南部的大部分海域标度指数较小,表层叶绿素的持续性较弱．总体而言,南海表层叶绿素的持续性比海洋表层温度(SST)的持续性弱,两者标度指数的空间分布也存在较大差异．
Based on the remote sensing observations of the SeaWiFS scanner from October 1997 to October 2005, the temporal correlation and fractal scaling characteristics of surface chlorophyll in the South China Sea were analyzed by using the removal trend fluctuation analysis (DFA). The calculated results show that there is a strong long-range correlation between the surface chlorophyll time series at each grid point in the South China Sea, and the scale index is between 0.5 and 1.14 with an average of 0.79. In the northwest of Luzon, upwelling waters such as the northern part of the 巽 he continental shelf have a larger scale index and a stronger persistence of surface chlorophyll; most of the sea area scale indexes in the southwest of Luzon Island, east of Hainan Island and southern South China Sea are smaller , The persistence of surface chlorophyll is weak. Overall, the persistence of surface chlorophyll in the South China Sea is weaker than that of the SST, and there is a big difference in the spatial distribution of the two indices.