【摘要】 调查海区的表层水可划分为四个变性水团,即南海北部沿岸水(NSCW)、南海太平洋表层水(SPSW)、泰国湾—巽他陆架一带表层水(SSSW)和南海中央表层水(CSSW).其中SPSW和SSSW属季节性水团,NSCW和CSSW终年存在。这些变性水团的消长变化与南海的季风密切相关.CSSW以南海中部为活动中心,在西南季风和东北季风的作用下,分别向南海北部和南部移动.SPSW和SSSW仅分别在冬半年和夏半年出现于调查海区的北部和西南部.NSCW的消长变化不但受到广东沿海江河径流量的制约,而且在东北季风潮期间还受到东海沿岸水的强烈影响。更多还原

【Abstract】 The surface waters in the researched area can be determined as four modified water-masses, i. e. Coastal Water of the Northern South China Sea (NSCW), Surface Water of the Pacific Ocean at South China Sea (SPSW), Surface Water of Siam Gulf and Sunda Continental Shelf Zone (SSSW), and Surface Water of the Central South China Sea(CSSW). SPSW and SSSW are seasonal water-masses, and NSCW and CSSW are present all the year round. Their variations in increase and decrease are closely related to the monsoons of South China Sea.The CSSW takes the central area of South China Sea as its action centre, and moves into the northern and southern areas of South China Sea respectively under the effects of the southwestern and northeastern monsoons.The SPSW is only present in the northern researched area during the winter half-year, and the SSSW in the southwestern researched .a-rea during the summer half-year.The variations in increase and decrease of the NSCW are not only subdued by the runoff volumes of the coastal rivers of Guangdong, but are also strongly affected by the coastal waters of East China Sea during the northeastern monsoon.更多还原