东海西部沿岸海域冬季的逆温跃层现象及其与环流的关系

Phenomenon of the Inversion Thermocline in Winter in the Coastal Water of the West of East China Sea and its Relation tO Circulation

本文引用《渤海、黄海、东海海洋图集──水文》分册（１９９２）中有关逆温跃层分布变化的图幅以及温盐历史资料，指出东海西部沿岸（２２～３２°Ｎ）冬季出现逆温跃层的区域北起长江口，南到南澳岛以南几乎相联成片的现象，论述了这一分布与中国东南近海冬季潜伏于深底层的暖流水的区域相吻合，从而从水文结构上证实了冬季在深底层粤东沿岸的南海暖流北上通过台湾海峡西部与闽浙沿岸的台湾暖流相接这一环流特征。

Based on the plane figures of the monthly distribution of the thermocline from marine Atlasof Bohai Sea, Yellow Sea East China Sea-Hydrology (1992) and historical data of water tem-perature and salinity, it is shown in the present paper that the areas of inversion thermocline inwinter in the coastal water of the western Ease China Sea are linked nearly together to form a sys-tem from the mouth of the Changiiang River in the north (ca. 32 N) to the neighbourhood ofNanao Island in the south(ca. 22 N), and that this bank-like distribution is coincident with thearea of warm water at deep and bottom layers in winter off the southeast coast of China. TIsfact further validates from hydrographical structure the circulation feature that in winter at deepand bottom layers the South China Sea Warm Current along the coast of eastern Guangdongmoves northward through the western Taiwan Strait to connect with the Taiwan Warm Current along the coast of eastern Fujian and Zhejiang.