中文摘要：

A 2D 平均深度的数字模型被设置在 Hangzhou 海湾模仿宏规模水动力学特征，沉积运输模式和词法进化，中国的东方海岸上的一个大宏潮汐的河口。由为沉积合并浅水方程，推迟的沉积运输方程和集体平衡的方程；为 Hangzhou 海湾的短期的水动力学，沉积运输和长期的词法进化被模仿，内在的物理机制被分析。模型在 Hangzhou 海湾复制推迟的沉积集中(SSC ) 的空间分发模式，由三个高 SSC 地区和二个低 SSC 地区描绘了。它正确地也在 Hangzhou 海湾模仿剩余流动，剩余沉积运输和沉积累积模式。模型结果基于地大小与以前的研究一致。剩余流动和剩余沉积运输朝陆地在在南部的部分指导的海湾和朝海的方向的北部分被指导。沉积累积发生在海湾的大多数区域。泛音分析表明潮在海湾的北部分是洪水主导的并且在海湾的南部的部分退主导。洪水优势的力量沿着北 Hangzhou 海湾朝陆地增加。接着，在 Hangzhou 海湾的沉积运输被这个潮汐的不对称现象模式控制。另外，在华东海，在东南和海湾的塑造漏斗的几何学的群岛的存在，为沉积的模式的重要角色搬运的戏和沉积累积的潮汐的繁殖的方向分别地。

英文摘要：

A 2D depth-averaged numerical model is set up to simulate the macro-scale hydrodynamic characteristics,sediment transport patterns and morphological evolution in Hangzhou Bay,a large macro-tidal estuary on the eastern coast of China.By incorporating the shallow water equations,the suspended sediment transport equation and the mass-balance equation for sediment; short-term hydrodynamics,sediment transport and long-term morphological evolution for Hangzhou Bay are simulated and the underlying physical mechanisms are analyzed.The model reproduces the spatial distribution patterns of suspended sediment concentration （SSC） in Hangzhou Bay,characterized by three high SSC zones and two low SSC zones.It also correctly simulates the residual flow,the residual sediment transport and the sediment accumulation patterns in Hangzhou Bay.The model results are in agreement with previous studies based on field measurements.The residual flow and the residual sediment transport are landwards directed in the northern part of the bay and seawards directed in the southern part.Sediment accumulation takes place in most areas of the bay.Harmonic analysis revealed that the tide is flood-dominant in the northern part of the bay and ebb-dominant in the southern part of the bay.The strength of the flood-dominance increases landwards along the northern Hangzhou Bay.In turn sediment transport in Hangzhou Bay is controlled by this tidal asymmetry pattern.In addition,the direction of tidal propagation in the East China Sea,the presence of the archipelago in the southeast and the funnel-shaped geometry of the bay,play important roles for the patterns of sediment transport and sediment accumulation respectively.