A quasi-synoptic set of data, collected on the Agulhas Bank during the summer of 1985/86, is presented and discussed in terms of thermocline stability. The Bank is characterized by a continuous, strong thermocline which deepens towards the west. Typical values are extracted and Richardson numbers are calculated for various parts of the Bank. These are cautiously interpreted in terms of thermocline maintenance and vertical exchange potentials. The dipping thermocline reflects a conversion from advectively controlled structure in the east to an interaction between advective and atmospheric control in the west. Quasi-permanent structure gives way to seasonality towards the west.
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Largier et al. (1987) studied this question.