温州湾水流及其与地形的关系

本文采用二维显式有限元方法数值模拟了温州湾内的流态及其变化，并在此基础上，根据温州湾的地形特点分析探讨了温州湾水流变化与湾内地形之间的关系。灵昆浅滩和霓屿山仰舌沙咀在水下的相向延伸，将温州湾分为南北两片，有利于温州湾联岛工程坝轴线的确定。温州湾北片是冲淤变化最活跃的地区。由于瓯江北汊落潮槽与东口涨潮槽方向并不一致，错开处发育的沙洲（中沙、腰子沙等），沙洲位置随瓯江南北汊水量分配情况而定；北口对瓯江

The Relationship between Current and Topography in Wenzhou Bay

The current field and its variation in Wenzhou Bay are numerically simulated with a 2D finite element model. Based on hte current field and the topographical features, their relationships are analyzed and discussed. Linkun shoal and Niyushan sand spit are stretching under the water in opposite direction, dividing Wenzhou Bay into two parts(the south part and the north part), which is helpful to determine the axis line of island - connection embankment in Wenzhou Bay. The north part is the most active area of erosion and deposition in Wenzhou Bay.Because the directions of ebb tidal trough in north branch of Oujiang estuary and flood trough of the east mouth of Wenzhou Bay are not consistent, there are shoals developed where the troughs staggered, whose sites vary with the volume distribution between the north and south branches.There are river bars also developed in the north part of Wenzhou Bay, because of the current seperation in north mouth, mixing of fresh water and saline water and the protection screen of the islands around the north part from the wind waves. These shoals and bars should be dredged for the development of Wenzhou Harbour.