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长江口南汇东滩近岸淡水资源的成因探讨
引用本文:曹勇,陈吉余.长江口南汇东滩近岸淡水资源的成因探讨[J].水科学进展,2007,18(3):410-414.
作者姓名:曹勇  陈吉余
作者单位:1.上海市环境科学研究院, 上海, 200233;
摘    要:根据在南汇东滩进行多次观测的结果,阐述当地淡水资源分布情况.洪、枯季淡水机率分别达到了77.0%~82.9%、35.0%~42.7%.同时对近岸淡水的成因进行探讨,长江径流丰沛,是南汇东滩淡水形成的基础;柯氏力使淡水沿浅滩下泄,是南汇东滩淡水形成的另一个重要因素;枯季风速风向对淡水形成有较大影响,特别是西北风对淡水有促进作用.

关 键 词:南汇东滩    淡水    大通流量    柯氏力    风速风向
文章编号:1001-6791(2007)03-0410-05
收稿时间:2006-02-26
修稿时间:2006-02-262006-05-15

Analysis of the causes of freshwater resource in Nanhui east shoal in the Yangtze River estuary
CAO Yong,CHEN Ji-yu.Analysis of the causes of freshwater resource in Nanhui east shoal in the Yangtze River estuary[J].Advances in Water Science,2007,18(3):410-414.
Authors:CAO Yong  CHEN Ji-yu
Institution:1.Shanghai Academy of Environmental Sciences, Shanghai 200233, China;2.State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
Abstract:After surveyed in situ in Nanhui east shoal several times,the rule of freshwater is described in this paper.The probability of freshwater occurred in wet season and dry season is from 76.98 to 82.94 percent and from 35.04 to 42.66 percent,respectively.And the causes of freshwater are discussed also.The runoff of Yangtze River is abundant,which is the basis of freshwater occurring in Nanhui east shoal.The Criolis's force is another important factor making the freshwater flow at the tide flat.The velocity and direction of wind in the dry season have important effect on freshwater resource.Northwest wind accelerates the probability of freshwater resource occurred in dry season,especially.
Keywords:Nanhui east shoal  freshwater  discharge of Datong station  Criolis's force  velocity and direction of wind
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