A PRELIMINARY STUDY ON MEANFIELD DECOMPOSITION

作     者：Ma Helai and Su Yusong(Received March 6, 1987 accepted September 15, 1987) 

出 版 物：《中国海洋大学学报（自然科学版）》 (Periodical of Ocean University of China)

年 卷 期：1989年第27卷第S1期

页      面：515-526页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

主　　题：empirical orthogonal function mean-field decomposition 

摘      要：Two kinds of the empirical orthogonal function analysis method for decomposing the mean-field are developed and a comparison is made between them. It is proved that the mean-field can be decomposed using eigenvectors obtained from anomaly-field decomposition, and that more information can be obtained. An example of sea bottom mean temperature analysis shows its remarhabk effect in depicting the distribution features of variousfactors, such as cold water mass, currents and radiation.A few problems concerning the efficiency of the method are discussedand two matrices of relationship which represent the space-time characteristics of the field are derived. The formulae of space-time transformation are obtained conveniently.