Journal
JOURNAL OF PHYSICAL OCEANOGRAPHY
Volume 37, Issue 7, Pages 1764-1777Publisher
AMER METEOROLOGICAL SOC
DOI: 10.1175/JPO3098.1
Keywords
-
Categories
Ask authors/readers for more resources
The vertical structure of the dissipation of turbulence kinetic energy was observed in the nearshore region ( 3.2-m mean water depth) with a tripod of three acoustic Doppler current meters off a sandy ocean beach. Surface and bottom boundary layer dissipation scaling concepts overlap in this region. No depth-limited wave breaking occurred at the tripod, but wind-induced whitecapping wave breaking did occur. Dissipation is maximum near the surface and minimum at middepth, with a secondary maximum near the bed. The observed dissipation does not follow a surfzone scaling, nor does it follow a log layer surface or bottom boundary layer scaling. At the upper two current meters, dissipation follows a modified deep-water breaking-wave scaling. Vertical shear in the mean currents is negligible and shear production magnitude is much less than dissipation, implying that the vertical diffusion of turbulence is important. The increased near-bed secondary dissipation maximum results from a decrease in the turbulent length scale.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available