In this study, results from a realistic 3D hydrodynamic and sediment transport model, applied to a channel in the Dutch Wadden Sea, are analyzed in order to assess the effect of short-term wind forcing, the impact of fresh water effects, and the variability induced by the spring-neap cycle on the transport of suspended sediment. In the investigated region, a pilot study for sediment nourishment, the so-called Mud Motor, is executed. This project aims for the beneficial re-use of dredged harbor sediments through the disposal of these sediments at a location where natural currents are expected to transport them toward a nearby salt marsh area. The model results presented in this study advance the understanding of the driving forces that determine sediment transport in shallow, near-coastal zones, and can help to improve the design of the Mud Motor. In the investigated channel, which is oriented parallel to the coastline, tidal asymmetries generally drive a transport of sediment in flood direction. It was found that already moderate winds along the channel axis reverse (wind in ebb direction), or greatly enhance this transport, up to an export of sediment over the adjacent water shed (wind in flood direction). The most beneficial wind conditions (moderate westerly winds) can cause an accumulation of more than 90% of the initial 200 tons sediment pool on the intertidal area; during less favorable conditions (northeasterly winds), less than a third of the dumped sediment is transported onto the mudflat. On-shore winds induce a transport toward the coast. Surprisingly, sediment pathways are only sensitive to the exact disposal location in the channel during wind conditions that counteract the tidally driven transport, and freshwater effects play no significant role for the dispersal of sediment.

在这项研究中，分析了应用于荷兰瓦登海河道的逼真的3D流体动力和泥沙输送模型的结果，以便评估短期强迫风的影响，淡水影响的影响以及变化性春季-春季周期对悬浮泥沙的运输产生的影响。在被调查的地区，进行了泥沙营养的初步研究，即所谓的泥浆马达。该项目旨在通过在预期会产生自然水流将其运送到附近盐沼地区的位置处置这些沉积物，来有益地重新利用疏harbor的港口沉积物。这项研究中提出的模型结果进一步了解了决定浅水区，近岸区泥沙输送的驱动力，并有助于改进泥浆马达的设计。在平行于海岸线定向的被调查河道中，潮汐不对称通常会驱使泥沙在洪水方向上迁移。已经发现，沿河道轴线已经适度的风逆转（沿退潮方向风向），或大大增强了这种传输，直到邻近流域的泥沙出口（沿洪水方向风向）。最有利的风况（适度的西风）可导致潮间带地区最初的200吨沉积物池中90％以上的积累；在不利条件下（北风），不到三分之一的倾倒沉积物被输送到滩涂。陆上风引起向海岸的运输。出奇，