Computer Science – Sound
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3808610n&link_type=abstract
Geophysical Research Letters, Volume 38, Issue 8, CiteID L08610
Computer Science
Sound
1
Oceanography: Physical: Internal And Inertial Waves, Oceanography: Physical: Topographic/Bathymetric Interactions, Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes (4490), Oceanography: Physical: Eddies And Mesoscale Processes
Scientific paper
A global estimate of the energy conversion rate from geostrophic flows into internal lee waves in the ocean is presented. The estimate is based on a linear theory applied to bottom topography at O(1-10) km scales obtained from single beam echo soundings, to bottom stratification estimated from climatology, and to bottom velocity obtained from a global ocean model. The total energy flux into internal lee waves is estimated to be 0.2 TW which is 20% of the global wind power input into the ocean. The geographical distribution of the energy flux is largest in the Southern Ocean which accounts for half of the total energy flux. The results suggest that the generation of internal lee waves at rough topography is a significant energy sink for the geostrophic flows as well as an important energy source for internal waves and the associated turbulent mixing in the deep ocean.
Ferrari Raffaele
Nikurashin Maxim
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