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dc.contributor.authorFeddersen, Falk
dc.contributor.authorTrowbridge, John H.
dc.contributor.authorWilliams, Albert J.
dc.date.accessioned2010-12-02T15:25:46Z
dc.date.available2010-12-02T15:25:46Z
dc.date.issued2007-07
dc.identifier.citationJournal of Physical Oceanography 37 (2007): 1764-1777en_US
dc.identifier.urihttp://hdl.handle.net/1912/4152
dc.descriptionAuthor Posting. © American Meteorological Society, 2007. 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 37 (2007): 1764-1777, doi:10.1175/jpo3098.1.en_US
dc.description.abstractThe vertical structure of the dissipation of turbulence kinetic energy was observed in the nearshore region (3.2-m mean water depth) with a tripod of three acoustic Doppler current meters off a sandy ocean beach. Surface and bottom boundary layer dissipation scaling concepts overlap in this region. No depth-limited wave breaking occurred at the tripod, but wind-induced whitecapping wave breaking did occur. Dissipation is maximum near the surface and minimum at middepth, with a secondary maximum near the bed. The observed dissipation does not follow a surfzone scaling, nor does it follow a “log layer” surface or bottom boundary layer scaling. At the upper two current meters, dissipation follows a modified deep-water breaking-wave scaling. Vertical shear in the mean currents is negligible and shear production magnitude is much less than dissipation, implying that the vertical diffusion of turbulence is important. The increased near-bed secondary dissipation maximum results from a decrease in the turbulent length scale.en_US
dc.description.sponsorshipFunding was provided by NSF and ONR.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttp://dx.doi.org/10.1175/jpo3098.1
dc.subjectTurbulenceen_US
dc.subjectKinetic energyen_US
dc.subjectOceanen_US
dc.titleVertical structure of dissipation in the nearshoreen_US
dc.typeArticleen_US
dc.identifier.doi10.1175/jpo3098.1


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