A model-dye comparison experiment in the tidal mixing front zone on the southern flank of Georges Bank
Beardsley, Robert C.
MetadataShow full item record
A process-oriented model-dye comparison experiment was conducted to examine the ability of a numerical ocean model to simulate the observed movement of dye across the tidal mixing front on the southern flank of Georges Bank during 22–26 May 1999. The experiment was made using the unstructured-grid Finite-Volume Coastal Ocean Model (FVCOM) with varying horizontal resolution. The results indicate that the observed cross-isobath movement of the dye patch was primarily controlled by meso-scale temporal and spatial variability of the water temperature and salinity fields. Onset of vertical stratification tended to slow down an upward stretching of the dye column and trapped the dye within the bottom mixed layer. To reach a convergent numerical solution that reproduced the observed lateral turbulent dispersion of dye, the FVCOM grid required a horizontal resolution of ∼500 m in the dye study region. Within the tidal mixing front of Georges Bank, the movement of the center of the dye patch was mainly driven by the ensemble velocity integrated over the dye volume, with a first-order contribution from vertical shear of the dye's horizontal velocity.
Author Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 113 (2008): C02005, doi:10.1029/2007JC004106.
Suggested CitationJournal of Geophysical Research 113 (2008): C02005
Showing items related by title, author, creator and subject.
Tidal and groundwater fluxes to a shallow, microtidal estuary : constraining inputs through field observations and hydrodynamic modeling Ganju, Neil K.; Hayn, Melanie; Chen, Shih-Nan; Howarth, Robert W.; Dickhudt, Patrick J.; Aretxabaleta, Alfredo L.; Marino, Roxanne (Springer, 2012-05-30)Increased nutrient loading to estuaries has led to eutrophication, degraded water quality, and ecological transformations. Quantifying nutrient loads in systems with significant groundwater input can be difficult due ...
A new high-resolution unstructured grid finite volume Arctic Ocean model (AO-FVCOM) : an application for tidal studies Chen, Changsheng; Gao, Guoping; Qi, Jianhua; Proshutinsky, Andrey; Beardsley, Robert C.; Kowalik, Zygmunt; Lin, Huichan; Cowles, Geoffrey W. (American Geophysical Union, 2009-08-27)A spherical coordinate version of the unstructured grid 3-D FVCOM (finite volume coastal ocean model) has been applied to the Arctic Ocean to simulate tides with a horizontal resolution ranging from 1 km in the near-coastal ...
A finite volume numerical approach for coastal ocean circulation studies : comparisons with finite difference models Chen, Changsheng; Huang, Haosheng; Beardsley, Robert C.; Liu, Hedong; Xu, Qichun; Cowles, Geoffrey W. (American Geophysical Union, 2007-03-28)An unstructured grid, finite volume, three-dimensional (3-D) primitive equation coastal ocean model (FVCOM) has been developed for the study of coastal ocean and estuarine circulation by Chen et al. (2003a). The finite ...