Accession Number:

ADA533846

Title:

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

Descriptive Note:

Annual rept.

Corporate Author:

TEXAS UNIV AT AUSTIN INST FOR GEOPHYSICS

Personal Author(s):

Report Date:

2008-09-30

Pagination or Media Count:

12.0

Abstract:

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.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE