چرخابه ها EDDIES در خليج فارس

Eddies in the Persian Gulf Torabi

In this work the structure of eddies in the Persian Gulf has been studied, using direct measurements and observations. Using and information records from two Iranian research cruises (Ghods and Ferdows I) have Mt- Mitchell cruises and satellite images, eddies in the Persian Gulf have been recognized. With regard to the interaction between two main circulations in the Persian Gulf, a cyclonic circulation in the southern portion that is driven by density difference from the Strait of Hormuz, and another cyclonic circulation in the north western corner thats driven by Shatt-al-arab and Arvand Roud discharges, the most probability area for eddy formation is the near coastals of Busher Province and the centeral part of the Persian Gulf. Typical mesoscale eddies with speed of 3-6 cm/s and dominant special scales of about 50 km, which are in the same order as the Rossby radius of deformation in these waters, indicate that baroclinic instability may play an important role in their generation. The transfer of eddies potential energy to kinetic energy is an important process for generating turbulence and instability in the north coastals area near Rusher Province.