Abstract
In this study, we examine the results obtained by the Finite-volume Coastal Ocean Circulation Model (FVCOM) regarding the effects of eddy viscosity and bathymetry on the three-dimensional (3D) Lagrangian residual velocity (LRV) in a narrow bay. The results are cast in terms of two nondimensional numbers: the ratio of friction to local acceleration (δ) and the ratio of the minimum depth over shoals to the maximum depth in the channel (e). The ratio δ depends on the eddy viscosity and mean depth. For a given eddy viscosity, when e > 0.5, the along-estuary LRV tends to be vertically sheared and when e < 0.5, the exchange is laterally sheared. When e << 1, the structure of the 3D, depth-integrated, and breadth-averaged LRV changes only slightly as δ increases. For e values between 0.33 and 0.5, the structure of the 3D LRV is mainly laterally sheared. In the same e range, the 3D and depth- integrated LRV exhibit reversed structures from high to low δ values. In addition, the breadth-averaged LRV weakens the typical twolayered circulation when δ decreases. When e is 1, the two-layered vertical structure reverses direction, and a three- layered vertical structure develops in the outer bay as δ decreases.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
