摘要
浅水陆架锋是近岸混合区与外海层化区的分界面,对近海海雾形成、渔业生产及污染扩散有重要影响。赵保仁根据实测SST资料利用Simpson-Hunter参量提出黄海沿岸区域存在潮混合控制的浅水陆架锋,他还进一步指出,黄海沿陆架锋与冷水团边界区是黄海的主要上升流区,即锋面上升流区,夏季黄海西部沿岸存在沿冷水团锋面南下的强流。James用这一诊断模型讨论过锋区环流情况,Garret等用的是半诊断模型。他们均得出垂直于锋面的断面内在锋区附近存在着双环流结构。
This paper is to diagnostically simulated the circulation structure across the front near 34°N in the western Yellow Sea,in which field data measured in 1984 are employed. In this diagnostic model,the effects of topography, tide and wind are considered. Results show that (1) there is a suthern jet on the slope along the front,of which the velocity maximum is 7. 3 cm/s, (2) upwelling and downwelling exist in the front region, which'can reach 10-3cm/s, (3) in the stratified region, there is a northern current smaller than the southern jet, (4) the stream function in the section is of multi-cells pattern. Comparison between simulated results and measured data indicates that the circulation across the front is well simulated. The mechanism of upwelling in the front region is also explained.
出处
《海洋科学》
CAS
CSCD
北大核心
1993年第6期61-64,共4页
Marine Sciences
基金
国家基金
关键词
陆架锋
黄海
环流
数值模拟
Diagnostic model,Continental shelf front,The Yellow Sea