1986年7月黄海南部及东海北部海况的主要特征

OCEANOGRAPHIC CONDITIONS IN THE SOUTHERN YELLOW SEA AND THE NORTHERN EAST CHINA SEA JULY, 1986

本文简要阐明了1986年7月中美南黄海合作调查所得的东海北部和南黄海的海况特征。给出了2m,50m,底层及主要断面的温、盐度分布图、T-S图解、动力计算和漂流浮标的观测结果。从这些图表可以看出:夏季黄海暖流不再进入南黄海内部,但有经济州海峡重新回归对马暖流的迹象;黄海冷水团内部结构复杂,黄海的陆架锋对黄海水文要素的分布变化有重要影响;南黄海上层存在着封闭的密度环流;济州岛西南依然存在着气旋型海水运动等。

Oceanographic characteristics in the southern Yellow Sea and the East China Sea are described briefly on the basis of Sino-US cooprative investigation in July, 1986. The level and main sectional distributions of temperature and salinity, T-S diagram, geostrophic current and the traces of drogues are given in this paper. The, Yellow Sea Warm Current does not enter the interior part of southern Yellow Sea in summer, but it seams to pass through the Cheju Strait and return to the Tsushima Current; the interior structure of Yellow Sea Cold Water Mass is very complexi; the continental shelf fronts have an important influence on the distributions and variations of hydrographic elements; there exists a cyclonic circulations in the up-layer in the southern Yellow Sea and another cyclonic movement of water in the southwestern area to Cheju I.