Abstract:Seasonal differences in sigma-t (1.8), temperature (4.0 0 C) and salinity (0.9% 0) were observed during February/June 1976 in the vicinity of Ilha Grande off the coast of Brazi~. Estimates of static and dynamic stability were made through the calcu-Zation of Brunt-Vàisala frequencies and Richardson numbers, respectively. Both static and dynamic stability values were larger in February than in June for the same location and suggest a greater column stability in February than in June. Stations located in the nor… Show more
On the southeastern continental shelf of Brazil the wintertime subtidal variability of the circulation is highly dominated by the passage of cold fronts. Hydrographic data for the region reveal that during this (July, August, September) season only a weak vertical stratification is observed. In this paper the response of the region to cold fronts is studied by using a barotropic finite element model, forced by a conceptual cold front wind field derived from the analysis of coastal winds and satellite imagery.
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