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首页> 外文期刊>Chinese science bulletin >Long-range correlations in remotely sensed chlorophyll in the South China Sea
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Long-range correlations in remotely sensed chlorophyll in the South China Sea

机译:南海遥感叶绿素的长期相关性

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摘要

A 8-year time series of 8-day Sea-viewing Wide Field-of-view Sensor (SeaWiFS) data, which spans from Oct 1997 to Oct 2005, was used to study the temporal correlations and scaling behaviour of ocean chlorophyll fluctuations in the South China Sea (SCS) by means of detrended fluctuation analysis (DFA). Long-range correlations in chlorophyll fluctuations were detected in almost all the SCS. The scaling exponents vary over a wide range from 0.5 to 1.14, with an average value of 0.79. High values are found in the upwelling regions, such as the northwest of Luzon and the north of Sunda Shelf. Low values occur in the southwest of Luzon, the east of Hainan Island and a majority of the southern SCS. This spatial pattern is considerably different from that of the scaling exponents of the sea surface temperature (SST) time series. It is also demonstrated that SST exhibits more persistence than chlorophyll in almost all the SCS.
机译:使用8年时间序列的8天海景宽视野传感器(SeaWiFS)数据(从1997年10月到2005年10月)来研究海洋中叶绿素波动的时间相关性和尺度行为。南中国海(SCS)通过去趋势波动分析(DFA)进行分析。在几乎所有SCS中都检测到了叶绿素波动的长期相关性。缩放指数在0.5到1.14的宽范围内变化,平均值为0.79。在上流地区,例如吕宋岛西北部和Sun他架北部,发现了较高的数值。低值发生在吕宋岛的西南部,海南岛的东部和南南海的大部分地区。这种空间模式与海表温度(SST)时间序列的比例指数有很大不同。还证明了几乎所有SCS中SST的持久性都比叶绿素强。

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