ocean mixinginternal wavesKelvin-Helmholtz (KH) instability, characterized by the distinctive finite-amplitude billows it generates, is an important mechanism in the development of turbulence in the stratified interior of the ocean. In particular, it is often assumed that the onset of turbulence in ...
Ocean mixing by Kelvin–Helmholtz instability. Oceanography 25, 140–149 (2012). Article Google Scholar Chang, M.‐H., Jheng, S. Y. & Lien, R.‐C. Trains of large Kelvin–Helmholtz billows observed in the Kuroshio above a seamount. Geophys. Res. Lett. 43, 8654–8661 (2016). ...
Across the stable density stratification of the abyssal ocean, deep dense water is slowly propelled upward by sustained, though irregular, turbulent mixing. The resulting mean upwelling determines large-scale oceanic circulation properties like heat and
In the seasonalthermocline, a dominant mechanism for mixing is the Kelvin-Helmholtz instability, in which avertical shear of horizontal velocity causes the overturn of stratified water(seeInternal Waves). The resulting ‘billows’ are observed tobe on the order of 1m thick and to decay on the or...
Energy transfer to dissipation occurs through secondary Kelvin-Helmholtz instabilities following symmetric instability (Taylor & Ferrari, 2009). A symmetrically unstable flow is characterized by a geostrophic potential vorticity (qg) of the opposite sign of the Coriolis parameter, f, (i.e., qg<0 in...
Here we present fine-scale, direct measurements of shoaling internal solitary waves in the South China Sea, which allow for an examination of the physical processes triggering the intensive turbulent mixing in their interior. These are convective breaking in the wave core and the collapse of Kelvin...
Kelvin‐Helmholtz billowdeep‐ocean mixinginternal wavesDetailed overturning is observed between 0.5 and 50 m above the sloping side of Great Meteor Seamount, Canary Basin, using 100 moored temperature sensors, 1 mK accurate, sampling at 1-Hz. While previously reported frontal bores of 40-m ...
(1985): Laboratory observations of secondary structures in Kelvin-Helmholtz billows and consequences for ocean mixing. Geophys. Astrophy. Fluid Dyn., 34 , 175- 199.Thorpe, S., 1985: Laboratory observations of secondary structures in Kelvin-Helmholtz billows and conse- quences for ocean mixing. ...
It is shown that these dynamics lead to the mixed frictionally induced and Kelvin鈥揌elmholtz instability of grounded abyssal overflows. Within the overflow, the linearized instabilities correspond to bottom-intensified baroclinic roll waves, and in the overlying water column amplifying internal gravity ...
indicators that reflect the water mass layering structure in summer in the YS; and (3) the shear excited by internal waves during propagation and flood tides enhances the upward and downward mixing of the water mass near the thermocline, thus thickening and weakening the layer, an effect that ...