A model-dye comparison experiment in the tidal mixing front zone on the southern flank of Georges Bank


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dc.contributor.author Chen, Changsheng
dc.contributor.author Xu, Qichun
dc.contributor.author Houghton, Robert
dc.contributor.author Beardsley, Robert C.
dc.date.accessioned 2010-05-26T15:26:24Z
dc.date.available 2010-05-26T15:26:24Z
dc.date.issued 2008-02-09
dc.identifier.citation Journal of Geophysical Research 113 (2008): C02005 en_US
dc.identifier.uri http://hdl.handle.net/1912/3528
dc.description 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. en_US
dc.description.abstract 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. en_US
dc.description.sponsorship This research was supported by the U.S. GLOBEC Northwest Atlantic/Georges Bank Program NSF (OCE-0234545; OCE-0227679) and NOAA grants (NA-16OP2323) to Changsheng Chen and Qixchun Xu, NSF grant (OCE-0236270) to Robert Houghton, and the Smith Chair in Coastal Oceanography and NOAA grant (NA-17RJ1223) to R.C. Beardsley. The experiments were conducted using the Linux cluster computers of the Marine Ecosystem Dynamics Modeling Laboratory at the School of Marine Science and Technology, University of Massachusetts- Dartmouth, funded by the SMAST Fishery Program through NOAA grants DOC/NOAA/NA04NMF4720332 and DOC/NOAA/NA05NMF4721131. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.relation.uri http://dx.doi.org/10.1029/2007JC004106
dc.subject Model-dye comparison en_US
dc.subject Tidal mixing front en_US
dc.subject Lateral diffusion en_US
dc.title A model-dye comparison experiment in the tidal mixing front zone on the southern flank of Georges Bank en_US
dc.type Article en_US
dc.identifier.doi 10.1029/2007JC004106

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