Increasing of Chahbahar Water stratification after Gonou Hurricane

In this study, effect of Gonou hurricane on stratification was analyzed by field data on temperature, salinity and density in Chahbahar Bay. Field data was used to describe the effects of western and south-east winds on the distribution of physical parameters. The salinity distribution before the hurricane event showed existence of Oman sea subsurface water (salinity less then 36. 5 psu) in deeper areas of the Bay. Salinity fields observed after south-east wind suggested encroachment of low salinity surface water from mouth of Bay into coastal area by Ekman transport phenomena. One week after weakening of hurricane vertical distributions of salinity and density produced strongly stratified conditions on throughout the Bay. Inflow of open and low salinity waters into the coast and the wind related to the hurricane, together produced a vertical gradient of these two parameters perpendicular to the Bay mouth. Correlation between the different parameters were studied using statistical tests. The circulation pattern in the Chahbahar Bay could be studied using these parameters and analyzing their vertical and horizontal distributions.