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本文利用日本气象厅“凌风丸”1972—1979年夏季在155°E断面赤道附近的海流观测资料,分析了该断面上赤道流系夏季的基本特征及其与ElNio的关系。该断面上的赤道潜流相当稳定,它以赤道为中心,位于100—350m之间,平均输送量为31Sv,平均最大流速为73cm/s,而南赤道流和赤道表层流变化很大。文中以1975年6月和1976年6月两次观测资料为例,分析了1976—1977ElNio事件过程中南赤道流和赤道表层流的变化及其与西太平洋赤道地区大气环流的关系。
In this paper, based on the ocean current observation data of “Ling Feng Wan” near the 155 ° E section in the summer of 1972-1979 in Japan, the basic characteristics of the equatorial stream system in summer and its relationship with ElNio are analyzed. The equatorial current flow in this section is relatively stable. It takes the equator as the center and lies between 100-350m. The average transport volume is 31Sv and the average maximum velocity is 73cm / s, while the south equatorial and equatorial surface currents vary greatly. Taking the observation data of June 1975 and June 1976 as an example, the changes of the south equatorial current and the equatorial surface current during 1976-1977ElNio event and its relationship with the atmospheric circulation in the western equatorial Pacific are analyzed.