赤道东太平洋海表水温变化的多层次结构特征分析

Multiscale Feature Analyses of Surface Water Temperature Variations for the Equatorlal East Pacific Ocean

以小波理论为基础来进行赤道东太平洋海表水温变化的多层次结构特征分析．结果表明，赤道东太平洋海表水温的变化表现出十分明显的多层次演变结构和突变特征．一级保留信息能较好地反映从１９５１年以来的历次厄尔尼诺事件和反厄尔尼诺事件，并对这些事件的强度、层次结构和突变等重要信息给予良好的表现．二、三级保留信息则分别反映了赤道东太平洋海温在另一层次里演变的结构特征，是对一级保留信息的增加和完善．

Using multiresolute theory of wavelet analysis,this paper studies the multiscale structure of surface water temperature variations for the Equatorial East Pacific Ocean.The results show that the climatic variations for the Equatorial East Pacific Ocean obviously appear multiscale change structure and catastrophe features.The first-class conserved information can describe every ElNino and La Nina event from 1951 and conserve the significant information of these events intensities,multiscale structures and catastrophe points etc.The second and third-class conserved information describe the structure features of the surface water temperature variations in anothers cale,and they add and improve the first-class information.