南海海温场分析及客观区划

本文采用方差极大正交旋转的因子分析方法,对南海SST场进行分析研究,并进行客观区划。结果表明,南海SST场可划分为七个区域,它们具有自身特定的变化规律,反映了不同的海洋动力学特征,这些具有不同特征的海区的形成可能分别与季风、南海海流、上升流、海洋涡旋、地理特征等因素有关,文中还对各主因子(对应于不同的海区)进行最大熵谱和交叉谱分析,得到各海区的显著周期和它们之间的显著耦合振荡周期,说明各海区除具有各自的特征外,它们之间还存在一定的内在联系。 

THE ANALYSIS AND OBJECTIVE REGIONALIZATION OF SST FIELD IN THE SOUTH CHINA SEA

The analysis and objective regionalization of SST field in the South China Sea are set up using the orthogonally rotated factor analysis based on maximum variance criteria.The result shows that the whole South China Sea SST field may be divided into seven regions having different changing rules respectively.They reflect different characteristics of oceanic dynamics and are related with monsoon, ocean current, vortex and geographical features, respectively.Furthermore, from the maximum entropy spectra and cross spectra of the factors' time series, significant periods in SST oscillations for individual regions and marked coupling oscillation periods among them are derivde.The result shows that each region has specific property and is correlated with each other.