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dc.contributor.authorRuddick, Barry R.  Concept link
dc.date.accessioned2018-02-21T19:00:32Z
dc.date.available2018-02-21T19:00:32Z
dc.date.issued1980-11
dc.identifier.citationRuddick, B. R. (1980). Critical layers and the Garrett-Munk spectrum. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/9599
dc.identifier.urihttps://hdl.handle.net/1912/9599
dc.descriptionAlso published as: Journal of Marine Research 38 (1980): 135~145en_US
dc.description.abstractThe effects of critical level absorption of oceanic internal waves by a mean flow are estimated using the Garrett and Munk (1975) model spectrum. The horizontal currents of the wave field are found to be more intense perpendicular to the mean flow than parallel to it. The cause of this anisotropy is preferential absorption of waves travelling with the mean flow. However, the current anisotropy is only half as large as would be necessary to explain Frankignoul's (1974) observations. The wave momentum flux lost to critical level absorption is found to be nearly proportional to the mean velocity. When the momentum flux is deposited throughout a 400 m thick shear zone, typical of the main thermocline in the North-west Atlantic, the observed stress-shear relationship would correspond to a wave-induced eddy viscosity of -200 cm2 s-1. The effect of the absorbed momentum on the mean flow is to cause a slow (5 m/day) downward phase propagation and slow broadening of the shear profile.en_US
dc.description.sponsorshipPrepared for the Office of Naval Research under Contract N00014-76-C-0197; NR 083~400.en_US
dc.language.isoen_USen_US
dc.publisherWoods Hole Oceanographic Institutionen_US
dc.relation.ispartofseriesWHOI Technical Reportsen_US
dc.relation.ispartofseriesWHOI-80-62en_US
dc.subjectInternal wavesen_US
dc.titleCritical layers and the Garrett-Munk spectrumen_US
dc.typeTechnical Reporten_US
dc.identifier.doi10.1575/1912/9599


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