Two eddy, one cyclonic and the other anticyclonic, in the subtropical frontal region(STF) of the Indian Ocean sector of Southern Ocean (SO) and their role on the watermass modification are described here using the hydrographic data collected during the austral summer(February) of 2012 and 2013 and also by using Argo profiles sampled during the austral summer from 2004 to 2012.
The cyclonic eddy transports cold, fresh and deeper Antarctic Intermediate Water (AAIW) to much shallower depths,but the anticyclonic eddy pushes the warm, more saline Subtropical Surface Water (STSW) to deeper depths.