: Gorgan Bay is the largest bay in the southeast Caspian Sea and extends the East-West direction. Generally all water exchange of Gorgan bay was done through the passage of Ashuradeh, with the Caspian Sea that is the only open border in the north east part of the Bay. Therefore, water features and sediments of Gorgan Bay are similar significantly with properties of water and sediment southern coast of the Caspian Sea.And hydrodynamic of Golestan coasts, especially in the Gorgan Bay like public hydrodynamic of the Caspian Sea and the rivers of the region's output rates. The water balance is almost constant and is not tidal. At first hydrodynamic modeling of the bay was done .one of the important factor was water depth which calculated by hydrography method of the bay.In this study, a model was made for the Gorgan bay in terms of qualitative and quantitative modeling and it's behaviors are evaluated under different scenarios.And water qualitative in the Gorgan bay survey during next 29 years In this study, Mike 21 software was used for two-dimensional modeling .First, to determine the hydrodynamic and flow cycle in the Gulf and interaction of hydrodynamic the Gulf with the sea through the inlet; climate, wave and currents of the Gulf hydrodynamic modeling was done.One of the requirements of hydrodynamics modeling, is the depth of water that was obtained through the hydrographic surveys of the Gorgan Bay.The following map was extracted litter the floor of the Gulf and prepared depth map. an‎d then were calculated the current volume and area (2012) of the Gorgan bay 466 square kilometers and 905.33 million cubic meters, respectively, and curves balance -volume, balance of water- Area and Area -volume were extracted.Then, a model made for the salinity of the bay. Since, salinity is a stable parameter, a sub-program TM ( Mike 21) which has the ability to make a model from the process of advection – dispersion was used. The amount of Manning (0.025) and Dispersion (50) coefficient calculated simultaneously with calibration of salinity model (D:square meter / second). Results from data verification of salinity model indicated about 3 percent mean error. The pollution dispersion type in the bay evaluated at six points of the bay using the method of dot constant source of pollution. Results showed that around 99.9 percent of pollution decreases under the effect of dilution process till the 100 m distance.Then modeling of dissolved oxygen , Ammonia,nitrite and nitrate was done by using of subprogram ECOLAB at the Mike software To make these models, first the sensitivity analysis of these parameters was done.Important parameters chose for model calibration and then data verified and also the model calibrated. The result of data verification test showed the mean error of oxygen , ammonia , nitrite and nitrate were respectively about 3, 4, 6.3 and 37 percent.Locating operation of the appropriate areas of warm-water and cold-water fish and beluga in the Gorgan Gulf was done using AHP, and the suitable cultivation areas were identified and ranked. AHP method showcased excellent results in the locating operations.Then, the optimum number of pen cultures in a farm was calculated by maximizing the area of suitable cultivation areas, and considering the confidence distance of about 100 meters. The results show the number of 18, 18 and 20 pen cultures on each farm for the warm-water and cold-water fish and beluga, respectively. Taking into account the confidence distance of 100 meters and optimum number of pen culture, the arrangement of warm-water and cold-water fish and beluga fishs farms in the Gorgan Gulf, and the map of farms of different species in the Gulf was determined in the GIS environment.According to the arrangement determined, the appropriate area for warm-water and cold-water fish, and beluga cultivation is 9.225 square kilometer (1060 farms with 18 Pen Cultures), 3.833 square kilometer (440 farms with 18 Pen Cultures), and 2.673 square kilometer (276 farms with 20 Pen Cultures). Then modeling made according to four different scenarios which defined on the basis of pollutions originated from aquaculture in the bay (scenario 1: aquaculture at the first half year. Scenario 2 : aquaculture at the 2nd half year. Scenario 3: aquaculture at the whole of year. Scenario 4:cultivation of bluga for 3 years). Water quality of the bay and also different amount of aquaculture production surveyed during next 29 years under different scenarios of aquacultures.The places under pollution were included the appropriate places for aquacultures in each scenario that was already determined at the bay .Then the reaction of the Gorgan bay was determined under each scenario. The curves of pollution fluctuations were drawn along with amount of cultivation at the each scenario.At last, appropriate amount of cultivation was calculated at each scenario with considering of self purification of the bay that does not tend to pollution of the bay. On the other hand, the farms arrange, distances between farms and the number of cultivation ponds at the each farm was calculated. Finally, results showed that the aquaculture capacity of the bay is less than 300 tons per year

خليج گرگان , آبزي پروري , هيدروگرافي , مدل شوري , كيفيت آب , مدل سازي هيدرولوژي

تهران موسسه تحقيقات علوم شيلاتي كشور

مصور (رنگي)، جدول، نمودار (بخشي رنگي)

موسسه تحقيقات علوم شيلاتي كشور 53196

ص. ع. به انگليسي: Hassan Mohammadkhani. Study of possibilities of aquaculture activities in the Gorgan Bay phase 2 , كتابنامه: ص. 105- 106

آبزي پروري -- ايران , آبزي پروري -- ايران-- خليج گرگان , آبزي پروري -- امكان سنجي

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