洋山港海区悬浮泥沙运动遥感分析

利用卫星遥感图片对洋山海域悬沙分布规律及运动趋势以及杭州湾、长江口泥沙运动对洋山港的影响进行了分析,提出了长江口下泄泥沙不会直接影响到大小洋山海域;洋山港海区高浓度含沙水体一方面受到杭州湾涨落潮水流携带高浓度泥沙的影响,另一方面水流围绕岛屿形成复杂回流区也造成局部高含沙,岛屿效应引起的局部高含沙是杭州湾岛屿群的共性。

Remote Sensing Analysis on Suspended Sediment Movement in the Sea Area of Yangshan Harbor

Using the remote sensing image,the distribution patterns and movement tendency of suspended sediment and the imfluence of sediment movement in the Yangtze River Mouth is analyzed.It's proposed that sediment from the Yangtze River Mouth will not affect the sea area of Yangshan Harbor directly.On one hand,the flow in the sea area is affected with heavy sediment bearing flow of ebb and flood tides from Hangzhou Bay,on the other hand,the flows surrounding the islands formed complicated circumfluence,which bring on the local concentration increasing.The local heavy silt carrying caused by island effect is the commonness of islands and islets of Hangzhou Bay.