苏北浅滩外侧浅水锋的观测与分析

OBSERVATIONS AND ANALYSES OF THE SHALLOW WATER FRONT IN THE OUTSIDE OF THE SUBEI SHOAL

关于黄海的潮混合和浅水锋现象,中国和韩国的学者已有一些报道(赵保仁,1987a,b;赵保仁等,1992;Lie,H-J.,1989)。卫星图片和有关水文观测资料表明,夏季,黄海的浅水锋主要分布在苏北浅滩外侧、山东半岛的成山角—石岛近海、渤海海峡、西朝鲜湾和江华湾湾口附近及朝鲜半岛西南部近海。 为了深入了解黄海苏北浅滩外侧浅水锋的分布和水文结构。

This paper reports the main results of oceanographic investigations of the shallow water front area outside the Subei (Northern Jiangsu Province) Shoal. The observations showed that the surface cold water and the shallow water front were restricted by an underwater sand ridge stretching northward. Comparison of the geostrophic current with the measured current showed that the dynamic height could be used to describe the scheme of water movement in this area. A strong current in the upper layer near the front, the upwelling in the left shallow water area of the front, and the downwelling in its right deeper water area were all identified by the current data and the distributions of temperature and salinity. Notable variations of distributions of the surface cold water and the front were also found according to measured temperature data and remote sensing data from satellite.