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dc.contributor.authorCallaghan, Adrian H.
dc.contributor.authorDeane, Grant B.
dc.contributor.authorStokes, M. Dale
dc.date.accessioned2018-09-20T16:02:26Z
dc.date.available2018-09-20T16:02:26Z
dc.date.issued2008-05-17
dc.identifier.citationCallaghan, Adrian H. Deane, Grant B.; Stokes, M. Dale (2008). Observed physical and environmental causes of scatter in whitecap coverage values in a fetch-limited coastal zone. Journal of Geophysical Research 113 ,
dc.identifier.issn0148-0227
dc.identifier.urihttp://hdl.handle.net/10379/10654
dc.description.abstractMeteorological and oceanographic data along with sea surface images were recorded at a fetch-limited coastal site to investigate the effect of physical and environmental conditions on whitecap coverage W. An automated image-processing technique allowed over 100,000 images to be analyzed for W. Data analysis showed that many processes influenced W. The presence of tidal currents appeared to have augmented values of W under certain specific conditions. Analysis of wave spectra indicated the ubiquitous presence of swell propagating northward. Scatter in W was markedly absent in mixed seas when the spectral intensity of the wind waves was of the same order of magnitude as the spectral intensity of the swell waves. Swell-dominated seas introduced much more scatter in W. W was approximately one third lower in swell-dominated seas than in mixed seas. Specifically, steep swell waves (steepness values greater than 0.01) that propagated opposite to wind wave direction appeared to have reduced W at wind speeds below approximately 7.5 m s(-1), but this effect needs more investigation. The coastal site enabled the possibility of investigating physical and environmental effects on W that would otherwise have been more difficult to observe in the open ocean.
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of Geophysical Research
dc.subjectgas transfer velocities
dc.subjectmarine aerosol production
dc.subjectwave-field conditions
dc.subjectwind-generated waves
dc.subjectoceanic whitecaps
dc.subjectsea-state
dc.subjectsurface
dc.subjectswell
dc.subjectbreaking
dc.subjectdissipation
dc.titleObserved physical and environmental causes of scatter in whitecap coverage values in a fetch-limited coastal zone
dc.typeArticle
dc.identifier.doi10.1029/2007jc004453
dc.local.publishedsourcehttp://onlinelibrary.wiley.com/doi/10.1029/2007JC004453/pdf
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