On the Transverse Circulation in a Coastal Plain Estuary

在这个项目中，pi将研究沿海平原河口的横向流动动力学，特别是弗吉尼亚州的詹姆斯河河口。利用声波多普勒电流剖面仪和CTD在春潮和小潮的两个潮汐周期中进行投投，将占用两个具有高空间分辨率测量的平行样带。此外，在两条横断面的每一条上，将分别用三个流速计系泊，并在两条横断面之间的河口两侧分别安装两个底压记录仪，进行高时间分辨率的测量。研究了三种不同的动力机制，即高流量（5月）、低流量（8月）和最弱垂直分层（10月）。将讨论与横向环流有关的一些目标，最后根据观测和数值模型对横向动量平衡中的主要项进行评估。

9530394 Lwiza In this project, the PIs will study the dynamics of transverse flow in a coastal plain estuary, specifically the James River estuary in Virginia. Two parallel transects with high spatial resolution measurements will be occupied, using an Acoustic Doppler Current Profiler, and CTD casts during two tidal cycles on spring and neap tides. In addition, high temporal resolution measurements will be made with three current meter moorings at each one of the two transects and two bottom pressure recorders at either side of the estuary between the two transects. Three different dynamical regimes in the year will be addressed, namely, high river discharge (May), low river discharge (August), and the weakest vertical stratification (October). A number of objectives relating to the transverse circulation will be addressed, culminating in an evaluation of the dominant terms in the transverse momentum balance, both from the observations and from a numerical model.