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dc.contributor.authorFisher, Alexander W.  Concept link
dc.contributor.authorSanford, Lawrence P.  Concept link
dc.contributor.authorScully, Malcolm E.  Concept link
dc.date.accessioned2018-07-12T16:41:32Z
dc.date.available2018-10-19T08:31:29Z
dc.date.issued2018-04-19
dc.identifier.citationJournal of Physical Oceanography 48 (2018): 905-923en_US
dc.identifier.urihttps://hdl.handle.net/1912/10467
dc.descriptionAuthor Posting. © American Meteorological Society, 2018. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 48 (2018): 905-923, doi:10.1175/JPO-D-17-0133.1.en_US
dc.description.abstractObservations of turbulent kinetic energy, dissipation, and turbulent stress were collected in the middle reaches of Chesapeake Bay and were used to assess second-moment closure predictions of turbulence generated beneath breaking waves. Dissipation scaling indicates that the turbulent flow structure observed during a 10-day wind event was dominated by a three-layer response that consisted of 1) a wave transport layer, 2) a surface log layer, and 3) a tidal, bottom boundary layer limited by stable stratification. Below the wave transport layer, turbulent mixing was limited by stable stratification. Within the wave transport layer, where dissipation was balanced by a divergence in the vertical turbulent kinetic energy flux, the eddy viscosity was significantly underestimated by second-moment turbulence closure models, suggesting that breaking waves homogenized the mixed surface layer to a greater extent than the simple model of TKE diffusing away from a source at the surface. While the turbulent transport of TKE occurred largely downgradient, the intermittent downward sweeps of momentum generated by breaking waves occurred largely independent of the mean shear. The underprediction of stress in the wave transport layer by second-moment closures was likely due to the inability of the eddy viscosity model to capture the nonlocal turbulent transport of the momentum flux beneath breaking waves. Finally, the authors hypothesize that large-scale coherent turbulent eddies played a significant role in transporting momentum generated near the surface to depth.en_US
dc.description.sponsorshipThis work was supported by National Science Foundation Grants OCE-1061609 and OCE-1339032.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/JPO-D-17-0133.1
dc.subjectMixingen_US
dc.subjectTurbulenceen_US
dc.subjectWaves, oceanicen_US
dc.subjectBoundary layeren_US
dc.titleWind-wave effects on estuarine turbulence : a comparison of observations and second-moment closure predictionsen_US
dc.typeArticleen_US
dc.description.embargo2018-10-19en_US
dc.identifier.doi10.1175/JPO-D-17-0133.1


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