Turbulent kinetic energy dIssipation strengthens near the surface and the bottom. A more detailed analysis of our turbulence observations can be found here . Seven repeats over a 20 hour period of an 18-km section were made to resolve the semidiurnal motions. This survey shows that the energy flux increases rapidly near the 1000 m isobath, and produces two paths of energy propagation originating at a depth near 700 m and propagating both upward and downward and away from the ridge. At the 3000-m isobath, the turbulent dissipation scales approximately with the energy flux, as indicated below.
Red arrows indicate the depth-integrated energy flux at each station location.
In the lower panels, energy propagation is upward and downward away from a depth near 700 m, as indicated by the strong phase propagation downward from the surface and upward from the bottom.