Physical Oceanography

, Volume 10, Issue 3, pp 215–232 | Cite as

Convection of salt fingers in theC-SALT region

  • A. E. Pogrebnoi
  • N. A. Panteleev
Analysis of Observations and Methods of Calculating Oceanic Hydrophysical Fields


We study possible mechanisms of mixing in the northwest part of the Tropical Atlantic (C-SALT) and show that homogeneous layers in the staircase structure can be observed across the entire frontal zone of the North Equatorial Countercurrent. In the central region of the frontal zone, one may observe horizontal motions of the upper parts of quasihomogeneous layers with respect to their lower parts and an essential role in the exchange processes is played by turbulence. The peripheral regions of the frontal zone are characterized by the presence of horizontal advection and isopycnic mixing. Far from the frontal interface, the principal contribution to the exchange processes is made by double diffusion. We demonstrate that, for the analysis of the vertical buoyancy fluxes caused by salt fingers, one can use both the Stern relation and the “law of 4/3”.


Density Ratio Frontal Zone Dynamic Error Homogeneous Layer Vertical Flux 
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Authors and Affiliations

  • A. E. Pogrebnoi
  • N. A. Panteleev

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