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Breaking wave turbulence in the surf zone

pulation. Two methods were examined for calculating breaking wave dissipation rates for particularly robust days (110.5 -114.5). Velocity data were acquired using two electromagnetic current meters over the vertical mounted on a tower at mid-surf zone. The first method identified individual bores, which were ensemble averaged by phase over 30 minute records to obtain wave number spectra invoking Taylor's frozen turbulence hypothesis. Maximum dissipation rates underneath the bore cycle were shown to lag behind the sea surface elevation. The second method used 30 minute ensemble averaged spectra to obtain dissipation after Trowbridge and Elgar (2001). Dissipation rates calculated underneath each bore segment were orders of magnitude smaller when compared to the ensemble averaged technique.

Identiferoai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/1915
Date06 1900
CreatorsSweeny, Margaret E.
ContributorsStanton, Timothy P., Thornton, Edward B., Naval Postgraduate School (U.S.)., Oceanography
PublisherMonterey, California. Naval Postgraduate School
Source SetsNaval Postgraduate School
Detected LanguageEnglish
TypeThesis
Formatxvi, 53 p. : col. ill., application/pdf
RightsApproved for public release, distribution unlimited

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