Effects of Small-Scale Bathymetric Roughness on the Global Internal Wave Field

The small-scale roughness properties of the seafloor are increasingly being recognized as critical parameters in determining important processes in physical oceanography. For instance, in situ observations (e.g., Polzin et al., 1997) find that mixing levels are greatly elevated in regions of rough t...

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Bibliographic Details
Main Authors: Goff, John A., Arbic, Brian K.
Other Authors: TEXAS UNIV AT AUSTIN INST FOR GEOPHYSICS
Format: Text
Language:English
Published: 2008
Subjects:
Physical and Dynamic Oceanography
Fluid Mechanics
*OCEAN WAVES
*ROUGHNESS
*INTERNAL WAVES
BATHYMETRY
MIXING
TIDES
OCEAN BOTTOM
ACOUSTIC DETECTORS
OCEAN TIDES
OCEANOGRAPHIC DATA
TOPOGRAPHY
OCEAN CURRENTS
OCEAN MODELS
BAROCLINES
AAD(AUSTRALIAN ANTARCTIC DISCORDANCE)
BRUNT-VAISALA BUOYANCY
HYCOM TIDAL MODEL
GLOBAL TIDAL MODEL
Antarctic
Australian-Antarctic Discordance
Egbert
Antarc*
Online Access:http://www.dtic.mil/docs/citations/ADA533846
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA533846
Description
Summary:The small-scale roughness properties of the seafloor are increasingly being recognized as critical parameters in determining important processes in physical oceanography. For instance, in situ observations (e.g., Polzin et al., 1997) find that mixing levels are greatly elevated in regions of rough topography. Gille et al. (2000) demonstrate that mesoscale eddy energy tends to be lower in areas where the bottom is rough (suggesting the possibility that dissipation of eddy energy takes place in such areas), and Egbert and Ray (2003) show that substantial tidal dissipation occurs in such areas. The dissipation is generally thought to arise from the breaking of internal waves generated by flows over the rough seafloor. The original document contains color images.

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