Study on some physicochemical parameters of the Oman Sea (I.R. IRAN)

During executing stock assessment of Mesopelagic fishes project in the Iranian part of Oman Sea, some physicochemical parameters were studied surveyed area located between 22 ֯ , 44' - 25 ֯, 33' N Latitudes and 57 ֯ , 04' -61 ֯, 31' E Longitudes. Data collected in 3 months (June, Oct. 1993 and Feb. 1994) in this study, pH, Salinity, dissolved oxygen and water temperature measured from surface to 400 m depth. The results showed that thermal condition of this part of Oman Sea was stable in the warm months, and the seasonal thermocline occurred between 10-60 m depths. Amount of dissolved oxygen below 50 m depth regarding to it's minimum rate (1 mg/L) showed that the suitable circulation was not exist in this time of year, pH and Salinity had a little decrease from surface to depth but some stations showed variable salinity