Long-range correlations in remotely sensed chlorophyll in the South China Sea  

作　　者：ZHAN Haigang SHI Ping MAO Qinwen ZHANG Tonghui 

机构地区：[1]Key Laboratory of Tropical Marine Environmental Dynamics (LED), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

出　　处：《Chinese Science Bulletin》2006年第B12期45-49,共5页

基　　金：Acknowledgements The authors thank NASA and NECP for providing the data. This work was supported by the Chinese Academy of Sciences （Grant No. KZCX3-SW-227） and the National Natural Science Foundation of China （Gramt No. 40306028）.

摘　　要：A 8-year time series of 8-day Seaviewing 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.A 8-year time series of 8-day Seaviewing 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.

关 键 词：南海 海洋叶绿素 遥感 长程相关 海面温度 

分 类 号：P722.7[天文地球—海洋科学] P731.1