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冬季沿岸海区温度和盐度的数值计算结果表明：温度在近岸近表层大致呈垂直均匀分布，外海近表层形成较强的温跃层，近岸至外海的下层保持冷水特征。表层和底层盐度高，中层盐度低，在中层形成自近岸伸向外海且盐度逐渐由低变高的低盐水舌，河口冲淡水区形成较强的盐跃层。随着自南往北海区水深的逐渐变浅、岸界坡度的由大变小和沿岸下降流的由强变弱，近岸温度和盐度的垂直分布越来越均匀，外海近表层的温跃层强度越来越弱。盐度自南至河口区逐渐由高变低，而自河口区至北逐渐由低变高。沿岸下降流使河流冲淡水区的益跃层变厚。
The numerical results of the temperature and salinity in the coastal area show that the temperature near the surface is approximately vertically and uniformly distributed, and the outer surface of the sea area forms a strong thermocline near the surface, while the lower layer of the near shore to the outer sea maintains the characteristics of cold water. The salinity of the surface and the bottom is high and the salinity of the middle is low. In the middle layer, the low salt water tongue which extends from the near shore to the sea and the salinity gradually changes from low to high is formed. With the water depth gradually decreasing from the south to the north sea area, the slope gradient of the coast became smaller and the flow of the coast downfall became stronger and weaker. The vertical distribution of the near-shore temperature and salinity became more and more uniform. The strength of the thermocline is getting weaker and weaker. Salinity from the south to the estuary gradually from high to low, and from estuary to north gradually from low to high. The descending currents along the coast make the thermocline thicker in the river diluting the water.