Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3208607i&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 8, CiteID L08607
Physics
22
Oceanography: Physical: Fine Structure And Microstructure, Oceanography: Physical: Internal And Inertial Waves, Oceanography: Physical: Fronts And Jets, Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes (4490), Oceanography: Physical: Upper Ocean And Mixed Layer Processes
Scientific paper
Analysis is presented of detailed observations of turbulence in stratified flow over topography. Key results are: 1) Directly measured dissipative energy losses due to skin friction and an internal hydraulic transition are relatively small, each accounting for approximately 10% of the mean flow energy loss, and 2) Production and dissipation of turbulent kinetic energy in flow over the topographic feature are in approximate balance throughout the transition from sub- to super-critical mean flow. The study is two-dimensional and a closed energy budget through direct measurement remains elusive; it is concluded that horizontal aspects of barotropic form drag such as eddy-shedding are responsible for as much as 30-40% of the mean flow energy loss.
Griffiths Colin
Inall Mark
Rippeth Tom
Wiles Phil
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