摘要
本文利用热带西太平洋中、美海气第1至第4航次联合考察资料,分析讨论了1986—1987年El Ni(?)o/Southern Oscillation(ENSO)事件期间该区热结构的变化。分析表明,事件期间热带西太平洋暖水域海水热含量显著降低,它与140°W和Nino_1+Nino_2区的SST距平变化恰成反位相关系。此外,温跃层在此期间内上升了50—100m,上混合层明显变浅。这种温跃层的异常上升是与事件期间此区西风异常的出现和赤道两侧正的风应力旋度增大有着密切关系。
The variations of the thermal structure in the- western tropical Pacific during the 1986-1987 ENSO event are discussed in this paper by using the data obtained from four cruises of PRC-USA Joint Air-sea Interaction Studies in the western Pacific Ocean. The results from the analysis of the data and calculations show that the heat content of the sea water in the warm pool of the western tropical Pacific was decreasing markedly during the event. Meanwhile, its variations and variations of the SST anomalies at EQ, 140°.W and in the regions Nino1 + Nino2 of the eastern Pacific were out of phase. Basides, the thermoclines there lifted up by 50-100m and upper mixed layer became shallow obviously during the event. The anomalous lift of the thermoclines was associated closely with the west wind anomaly and intensification of positive wind stress curl on both sides of the equator.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1992年第1期14-19,共6页
Oceanologia Et Limnologia Sinica
基金
热带西太平洋中
美海-气相互作用合作研究课题