1984──1989年165°E断面海水温盐结构的距平变化

ANOMALOUS VARIATIONS OF TEMPERATURE AND SALINITY STRUCTURES ALONG 165°E SECTION (1984-1989)

使用1984—1989年期间中美海-气相互作用合作研究及法国ORSTOM完成的沿165°E断面共17个航次调查中的温、盐资料，对1986—1987厄尔尼诺（E1Nino）及1984-1985，1988年反厄尔尼诺（LaNina）事件期间海洋上层温、盐结构的变化作了分析。文章指出，165°E断面温、盐结构的变化具有明显的厄尔尼诺-南方涛动变化周期之特征；研究期间E1Nino与LaNina温、盐结构的差别主要表现在盐度分布及次表层温度结构的不同；165°E断面上的温、盐结构在E1Nino及LaNina期间的变化是各种海-气相互作用结果的反映，其中赤道带纬向风及赤道表层流系的变化是该海区温、盐结构变化的主要原因。

Based on temperature and salinity data from 17 cruises along the 165°E section during 1984-1988 which were attained by the Sinuo-US cooperative air-sea interaction study and ORSTOM center in Noumea, the anomalous variations of temperature and salinity structures in the upper layer of the ocean in the periods of 1986-1987 E1 Nino and 1984-1985, 1988-1989 La Nina events were analyzed.The results show that the variations of temperature and salinity structures along the 165°E have apparent ENSO Period, the differences of temperature and salinity structures between E1 Nino period and La Nina period lie mainly in the salinity distribution and subsurface temperature structure. The anomalous variations of temperature and salinity in E1 Nino and La Nina periods are combinative results of some air-sea interactions, but the changes of zonal wind and surface layer current system in the equatorial zone are primary cause.