连云港海域水文泥沙运动特征

根据2006年1月1～9日对连云港海域19个测站的水文泥沙同步观测资料，分析了该海域的水文泥沙运动特征。结果表明：连云港海域，潮差较大，潮流流速较小；涨潮流速大于落潮流速；涨潮历时小于落潮历时。悬沙浓度与潮流流速均呈现出由南向北、由近岸向远岸递减的规律；在一个潮周期过程中，近岸含沙量有涨落变化，远岸则没有明显的涨落过程；运用最小二乘法原理对实测含沙量、流速和水深资料进行回归计算，求得含沙量与流速呈很好的正相关关系，且落潮含沙量的变化对弗洛德数的变化更为敏感。

The Hydrological and Sediment Characteristics in Lianyungang Coastal Waters

Based on the data from the hydrological and sediment survey in the winter of 2006, the characteristics of water and sediment in win- ter are analyzed. It reveals that in the Lianyungang coast, the tidal range is large while the tidal current is small ; the flood tidal velocity is larger than that of ebb tidal while the tide period of the latter is longer;the suspended sediment and the tidal velocity have the same variation trends, they both become lager from north to south and from nearshore to offshore ; in a tidal circle, the suspended sediment in nearshore fluctuated with the flooding and the edding tidal, while in offshore, it doesn＇t. Base on the principle of least square method, a regression calcula- tion on the suspended sediment,tidal velocity and water depth shows that the suspended sediment have a positive correlation with the tidal velocity,and it is more sensitive to the Fr in ebb tide than in flood tide.