Physics – Geophysics
Scientific paper
Nov 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3321608w&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 21, CiteID L21608
Physics
Geophysics
8
Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes (4490), Marine Geology And Geophysics: Ocean Observatories And Experiments, Nonlinear Geophysics: Instruments And Techniques, Oceanography: General: Ocean Acoustics, Oceanography: General: Instruments And Techniques
Scientific paper
We present a new technique for the estimation of profiles of the rate of dissipation of turbulent kinetic energy ($\varepsilon$, TKE) in the marine environment using a standard acoustic Doppler current profiler (ADCP). The technique is based on the structure function method used in radar meteorology. The new method is validated through comparisons of $\varepsilon$ estimates from a structure function with simultaneous measurements of profiles of $\varepsilon$ made using a freefall profiler, and estimates of the rate of production of TKE using the ADCP variance method. There is a good agreement between the estimates, although some differences in absolute values. A difference in $\varepsilon$ estimates between the upstream and downstream beams is attributed to the presence of a significant Reynolds stress.
Hendricks Peter J.
Rippeth Tom P.
Simpson John H.
Wiles Philip J.
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