in this paper, data gathered during 1957-1996 were used to study the climatological variability in the northern ecs, through statistical methods such as eof decomposition, correlation analysis, and maximum entropy spectrum analysis . the conclusions were drawn as follows : 1 本文利用19571996年东海温盐的观测资料,通过统计平均、eof分解、相关分析、最大熵谱分析等方法,对东海北部夏、冬季温盐年际年代际变化特征及其成因进行了初步探讨,得到以下结论:1