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首页> 外文期刊>Ocean Dynamics >Variability of residual fluxes of suspended sediment in a multiple tidal-inlet system: the Dutch Wadden Sea
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Variability of residual fluxes of suspended sediment in a multiple tidal-inlet system: the Dutch Wadden Sea

机译：多个潮汐-入口系统中悬浮泥沙残余通量的变化：荷兰瓦登海

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摘要

In multiple tidal-inlet systems such as the Dutch Wadden Sea, the exchange of sediments between the coastal lagoon and the adjacent sea is controlled by the combined effect of the tides, wind-driven flows, and density-driven flows. We investigate the variability of residual (tidally averaged) fluxes of suspended sediment with the three-dimensional numerical model GETM in relation to forcing mechanisms and model parameters. Sediment transport is modeled with three sediment classes. A modified Partheniades-Krone formulation describes the erosion and deposition fluxes from a single-layer sediment pool. The model is initialized with a uniform sediment pool for each class and the spin up period amounts to six months. Simulations span 1 year. Comparisons with observations show that model results are fairly realistic. Residual fluxes of water and suspended sediment are episodic in nature and vary strongly throughout the year, mainly due to wind variability. The net balance between import and export of material is very sensitive to model parameters. Residual fluxes are sensitive to the geographical orientation and location of the inlets, and the effect of driving mechanisms on the residual fluxes and concentrations can be organized hierarchically, with wind forcing having the largest effect on concentration levels and variability.
机译：在诸如荷兰瓦登海之类的多个潮汐入口系统中，沿海泻湖与邻近海域之间的沉积物交换受潮汐，风流和密度流的综合作用控制。我们用三维数值模型GETM来研究悬浮沉积物的残余（潮汐平均）通量与强迫机制和模型参数的变化。用三种沉积物类别模拟沉积物的运移。改良的Partheniades-Krone配方描述了单层沉积池的侵蚀和沉积通量。该模型使用每个类别的统一沉淀池进行初始化，加速时间为六个月。模拟跨度为1年。与观察结果的比较表明，模型结果是相当现实的。水和悬浮沉积物的残留通量本质上是偶发性的，并且全年变化很大，主要是由于风的变化。物料进出口之间的净平衡对模型参数非常敏感。残余通量对进气口的地理位置和位置很敏感，驱动机构对残余通量和浓度的影响可以分层组织，而强迫风对浓度水平和可变性的影响最大。

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  • 来源
    《Ocean Dynamics》 |2015年第10期|1321-1333|共13页
  • 作者

    Sassi Maximiliano; Duran-Matute Matias; van Kessel Thijs; Gerkema Theo;

  • 作者单位

    NIOZ Royal Netherlands Inst Sea Res, Dept Phys Oceanog, Texel, Netherlands;

    Eindhoven Univ Technol, Fluid Dynam Lab, NL-5600 MB Eindhoven, Netherlands|Eindhoven Univ Technol, Dept Appl Phys, JM Burgers Ctr, NL-5600 MB Eindhoven, Netherlands;

    Deltares, Dept Marine & Coastal Syst, Delft, Netherlands;

    NIOZ Royal Netherlands Inst Sea Res, Dept Phys Oceanog, Texel, Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Residual flux; Mud transport; Numerical model; Tidal inlet;

    机译：残留通量;泥浆输送;数值模型;潮气进口;

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