夏季黄河入海泥沙的数值模拟研究

发布时间：2018-06-19 19:22

本文选题：FVCOM + 黄河入海泥沙　；参考：《海洋科学》2016年03期

【摘要】：掌握黄河入海泥沙输运、沉积的规律可以为渤海沿岸经济发展的规划及环境保护管理提供理论参考。本文基于FVCOM(Finite-Volume Community Ocean Model)建立了三维水动力、泥沙耦合数值模式,利用实测水位、海流和悬沙资料,对模式进行了检验,模拟结果与观测符合较好。利用该模式研究了2007年夏季丰水丰沙期黄河入海泥沙的输运过程,并对渤海悬沙空间分布特征进行数值模拟。模式较好地再现了夏季黄河口入海泥沙的空间分布特征及底部冲淤状况。结合黄河口附近的潮流和余流特征,对悬沙分布特征和底部冲淤结果进行了分析,结果表明:黄河入海泥沙随余流向南和东南方向输运到莱州湾,在莱州湾中部向外海扩散,很可能沿东北方向进入渤海中部。在这个输运过程中,莱州湾表现为入海泥沙向外海扩散的通道。
[Abstract]:Mastering the sediment transport law of the Yellow River into the sea can provide a theoretical reference for the planning of economic development and environmental protection management along the Bohai Sea coast. Based on FVCOMFinite-Volume Community Ocean Model, a three dimensional hydrodynamic and sediment coupling numerical model is established. The model is tested by using measured water level, ocean current and suspended sediment data. The simulation results are in good agreement with the observations. Using this model, the transport process of sediment from the Yellow River to the sea in the summer of 2007 is studied, and the spatial distribution of suspended sediment in the Bohai Sea is simulated numerically. The spatial distribution of sediment in the Yellow River estuary and the scour and deposition at the bottom of the Yellow River estuary in summer are well reproduced by the model. Combined with the characteristics of tidal current and residual current near the Yellow River estuary, the characteristics of suspended sediment distribution and the results of scour and deposition at the bottom are analyzed. The results show that the sediment from the Yellow River to the sea flows south and southeast to the Laizhou Bay and spreads to the outer sea in the middle of the Laizhou Bay. It is likely to enter the middle of the Bohai Sea along the northeast. In the process of transport, the Laizhou Bay is a channel for sediment to spread out into the sea.
【作者单位】：宁波大学理学院;国家海洋局第一海洋研究所;青岛海洋科学与技术国家实验室区域海洋动力学和数值模拟功能实验室;
【基金】：海洋公益性行业科研专项经费项目(201205001)~~
【分类号】：P731.2;P737

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