Tide-Induced Residual Circulation and Dispersion in Coastal Embayments

该项目将现场测量和数值模拟相结合，以研究潮汐引起的沿海海湾的剩余环流和扩散。船用多普勒海流剖面仪和系泊海流计将部署在葡萄园湾，为期两个月的现场计划旨在观察海角周围潮汐和余流的空间变化。数值模拟将涉及三个部分：一套关于海角周围潮汐流动的理想化研究；对巴扎兹湾和葡萄园湾的现场和整个盆地环流的现实模拟；以及在理想化和物理现实领域的拉格朗日漂流数值实验。这项研究的总体目标是描述由潮汐环流引起的沿海海湾和混合良好的河口的平流和弥散输送的特征。

The project combines field measurements with numerical modeling to investigate tide-induced residual circulation and dispersion in coastal embayments. A shipboard Doppler current profiler and moored current meters will be deployed in Vineyard Sound in a two-month field program designed to observe the spatial variations in tidal and residual flow around a headland. The numerical modeling will involve three components: a set of idealized studies of tidal flow around a headland; realistic simulations of the field site and of the basinwide circulation in Buzzards Bay and Vineyard Sound; and numerical Lagrangian drifter experiments in the idealized and physically realistic domains. The overall objective of this research is to characterize advective and dispersive transport in coastal bays and well-mixed estuaries caused by tide-induced circulation.