摘要
根据实测资料分析了长江口的盐水入侵问题。采用调和常数得到外海控制潮位,用流量控制上游边界,建立了长江口、杭州湾及邻近海域正交曲线坐标系下的二维潮流和盐度数学模型。模型验证了长江口洪、枯季时大、中、小潮的潮位、流速、流向和盐度,较好地模拟了口外顺时针旋转流和口内往复流的特征,反映了外海盐水入侵和北支盐水倒灌的运移特性。在此基础上对长江口综合整治规划方案进行了研究,讨论了整治工程对减轻长江口盐水入侵的作用。
According to measured data, the ＂salinity intrusion in the Yangtze Estuary is analysised. A two-dimensional numerical model of tidal currents and salinity in the Yangtze Estuary and the Hangzhou Bay is established. The measured tidal levels, velocities and salinities in flood seasons and dry seasons are verified. The model simulated the clockwise circulating currents outside the estuary and reflected the characteristics of salinity intrusion. The results show that the regulation project can abate the salinity intrusion in Yangtze Estuary.
出处
《海洋工程》
CSCD
北大核心
2005年第3期31-38,共8页
The Ocean Engineering
基金
国家自然科学基金资助项目(50339010)
国家科技攻关计划资助项目(2004BA610A)
国家重点基础研究发展计划(973计划)资助项目(2003CB415104)
关键词
长江口
盐水
整治工程
数学模型
Yangtze Estuary
salinity
regulation project
numerical model
