渤海动力对黄河入海泥沙输移的影响  

Effect of the Bohai Sea Dynamics on Sediment Transport Discharged From the Yellow River

作　　者：吴永胜[1] 王兆印[1] 

机构地区：[1]清华大学水利系河流海洋研究所,北京100084

出　　处：《黄渤海海洋》2002年第2期22-30,共9页Journal of Oceanography of Huanghai & Bohai Seas

基　　金：国家自然科学基金资助项目 (5 9890 2 0 0 )

摘　　要：海洋动力过程对黄河入海泥沙的淤积和扩散具有决定性作用 ,利用三维斜压动力 -泥沙模型分析了黄河口外海域潮流动力变化与黄河入海泥沙淤积、扩散特性之间的响应关系。季节环流以及涨落潮的分布和变化很好地解释了黄河口南北浮泥的形成和消长变化以及黄河入海泥沙向海扩散的机理。结果表明 ,入海泥沙在洪季。Marine dynamic process plays a decisive role in deposition and dispersion of sediment discharged from the Yellow River. In this paper, a 3 D dynamic and sediment model is used to analyse the relationship between the tidal current variations in the Yellow River mouth area and the sediment deposition discharged from the Yellow River. The mechanisms for the fluid mud formation and variation in the Yellow River mouth area and the seaward dispersion of sediment discharged from the Yellow river are well explained by the seasonal circulation and the tidal current distribution and variation. It is shown from the analysis results that there are different transport characteristics for the discharged sediments in flood and dry seasons and surface and bottom layers.

关 键 词：渤海 入海泥沙输移 黄河 三维斜压动力-泥沙模型 悬沙扩散 海洋动力过程 

分 类 号：TV148[水利工程—水力学及河流动力学] P736.21[天文地球—海洋地质]