Hydrodynamics and sediment transport in a southeast Florida tidal inlet.
Hydrodynamics and sediment transport in a southeast Florida tidal inlet.
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DOI：
10.1016/j.ecss.2006.06.021
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发表时间：
2006-10
期刊：
影响因子：
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通讯作者：
J. Fiechter;Kelley Steffen;C. Mooers;B. Haus
中科院分区：
文献类型：
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作者：
J. Fiechter;Kelley Steffen;C. Mooers;B. Haus
三维海洋环流模式被用来研究佛罗里达东南部潮汐海湾和三角洲系统的水动力学，并了解悬沙和推移质泥沙输运模式的后果。该模型再现了观测到的潮流，并提供了关于落潮和洪水期间入口喉道和潮汐三角洲空间不对称造成的残流的洞察力。采用悬沙和推移质输沙的颗粒追踪方法，模拟了不同颗粒尺寸下的泥沙淤积形态。模拟结果与潮汐进水口和三角洲系统内沉积物特征的分布定性相关，并显示出对平流速度(如近底与深度平均)和沉积物来源区域的选择的敏感性。此外，悬沙和推移质输运之间的区别作为颗粒大小的函数，表明沉积模式及其与潮汐海湾和三角洲系统地貌特征的潜在联系存在显著差异。
A three-dimensional ocean circulation model is used to investigate the hydrodynamics of a tidal inlet and deltas system in Southeast Florida, and to understand the consequences for suspended and bedload sediment transport patterns. The model reproduces observed tidal currents and provides insight about residual currents caused by spatial asymmetries in the inlet throat and tidal deltas during ebb and flood flows. A particle-tracking approach for suspended and bedload sediment transport is used to simulate deposition patterns for different particle sizes. The simulation results qualitatively correlate with the distribution of sediment characteristics within the tidal inlet and deltas system and demonstrate sensitivity to the choice of advection velocities (e.g., near-bottom versus depth-averaged) and regions of sediment origin. Furthermore, the distinction between suspended and bedload transport as a function of particle size indicates significant differences in deposition patterns and their potential connection to geomorphologic features of the tidal inlet and deltas system.