Abstract

A linear model with cabbeling dynamics is developed for a nonrotating, unstratified ocean and applied to observations of three medium‐ to large‐scale oceanic thermohaline (density balanced) fronts. The ability of the predicted cabbeling sinking and surface convergence rates to maintain a steady front against diffusion depends critically on the assumed values of horizontal and vertical eddy viscosities. There is good theoretical evidence for the existence of small‐scale (1 km), weak (surface currents 0.1 cm s−1) cabbeling fronts; however, the intensity and stability of such fronts will depend critically on the scale dependent behavior of dissipation processes.

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