• List of Articles Aras River

      • Open Access Article

        1 - Qualitative study of surface water sources to achieve sustainable agriculture and natural resources (case study: Aras Border River)
        Milad Tabatabaei Hashemi Mahdi Sarai Tabrizi Hossein Babazadeh
        Since the agricultural sector is the main consumer of water in the country, achieving sustainable agriculture without considering environmental issues may lead to risks in the long term, therefore, the quantity and quality of surface water is so important in agriculture More
        Since the agricultural sector is the main consumer of water in the country, achieving sustainable agriculture without considering environmental issues may lead to risks in the long term, therefore, the quantity and quality of surface water is so important in agriculture. This research has investigated the Ares River catchment area with the aim of qualitative monitoring of surface water resources to achieve sustainable agriculture and natural resources. More than 100 collected samples from 9 stations of Aras River between Yaichi village in Azerbaijan and near Aras Dam from October 2017 to August 2018 have been investigated, classified, and evaluated using the Wilcox agricultural water quality index and Grapher software. The results of this research showed that the samples in Schuler's diagram were within the acceptable range but for drinking, other effective elements should also be investigated. The lowest amount of sodium absorption ratio was in June (1.40 mg/L) and the highest amount was in November (3.43 mg/L). Also, the electrical conductivity of water was the lowest value in June (840 µs/cm) and the highest value in October (1375 µs/cm). According to the Wilcox diagram, all the samples were in the qualitative range of C3S1 and they are considered saltwater. Despite the high level of salinity in the samples of this river, there was no significant difference in the qualitative trends of the stations during the investigated period for agricultural use, but the necessary measures should be taken in using these waters. Manuscript profile
      • Open Access Article

        2 - Assessment of geochemical and distribution of heavy metals Pb, Cu, Zn and Ni in the Aras free trade-industrial zone
        Shahram Shahmohammadi Kalalagh Nader Habibzadeh
        Aras river due to located in the path of mining activities and having special ecological, economic, social and a variety of different species of aquatic plants and animals is very important and assessment of its quality is essential. This study was conducted to assess p More
        Aras river due to located in the path of mining activities and having special ecological, economic, social and a variety of different species of aquatic plants and animals is very important and assessment of its quality is essential. This study was conducted to assess pollution of Pb, Cu, Zn and Ni in the Aras free trade-industrial zone. Samples of sediments, water, plant (Typha australis) and fish (Varicorhinus dapoeta) were collected in four sampling sites of 150 km of Aras river in autumn 2013 and summer 2014. The results indicated that the concentration of all elements in water and fish samples aligned with standards, although Cu value exceeded standard level within sedimentation and plant.  According to contaminant criteria (contaminant factor, pollution load index, and geoaccumulation index), Cu concentration was very high in all sampling sites except Sant-Spataneous site. Its reason is likely to overloading Cu from Sungon mine. The magnitude of heavy metal pollutants in all sampling sites was identified as follows: Cu > Zn > Pb = Ni. The bioaccumulation factor of heavy metals in fish samples was found to be lower than 1 indicating they probably were uptaked through fish respiratory and dermal surfaces rather than dietary uptake. The high concentrations of Pb and Zn in Typha australis from Ilganeh river and Gholan and Missen sites exhibited that this species could be utilised to remediate the polluted places to heavy metals. Manuscript profile
      • Open Access Article

        3 - Investigation of synoptic aspects of severe floods in Aras river basin by using moisture flux convergence, fronting and divergence indices
        Mahdi Sedaghat Hasan Haji Mohammadi Narges Naseri
        Flooding is a phenomenon that most climatic regions experience. Floods often cause problems such as; Soil erosion, sediment accumulation and loss of life and property. Therefore, flood climatology plays an important role in reducing and preventing possible environmental More
        Flooding is a phenomenon that most climatic regions experience. Floods often cause problems such as; Soil erosion, sediment accumulation and loss of life and property. Therefore, flood climatology plays an important role in reducing and preventing possible environmental damage. For study the synoptic climatology of floods in Aras river basin, daily data of 9 hydrometric stations and 6 synoptic stations during 1979-2014 have been used. Data on geopotential elevation, sea level pressure, specific humidity, omega index and Zonal (Meridional) wind components were also obtained from the US National Centers for Environmental Prediction/ Atmospheric Research. After reviewing the monthly and seasonal regime of the river and identifying the flood days, severe floods with discharge more than 700 m3/s in Khodaafarin hydrometer station were determined. In order to analyze the synoptic patterns of severe floods in Aras basin from the indicators; Moisture flux convergence function, fronting function and divergence function have been used. The results showed that during 4 severe floods in the region some atmospheric phenomena such as; a deep trough on the Black Sea, the Red Sea and the Persian Gulf and a cut off low on the west of the Caspian Sea at 500 hPa level in the region has been formed. At sea level, the formation of high pressure on the Caspian Sea and low pressure on Iraq and western Iran has caused the pattern of pressure changes in the region to increase and provide conditions for climbing. Applying the moisture flux convergence function showed that the source of moisture for these floods was mainly the Caspian Sea. Manuscript profile
      • Open Access Article

        4 - Study on Trace Elements (Mo, Cu, Hg and As) in Water and Sediments in Aras River in East Azerbaijan Province
        M. Ramin H. Nasrollahzadeh Saravi M. Dostar H. Ghasemi N. Pourang M. Baniamam
        This study was conducted to determine water quality of Aras River (Western Azerbaijan), based on metals (Mo, Cu, As, Hg) at four stations (From Julfa to 25km after Nourdos border) during four seasons from 2015 to 2016. Thirty two samples of water and sediments were coll More
        This study was conducted to determine water quality of Aras River (Western Azerbaijan), based on metals (Mo, Cu, As, Hg) at four stations (From Julfa to 25km after Nourdos border) during four seasons from 2015 to 2016. Thirty two samples of water and sediments were collected. All samples were analyzed using standard methods (digestion and extraction), using an atomic absorption specphotometer instrument. Results showed that Mo, Cu, As and Hg concentrations in waterand sediments ranged between 0.10-23.01, 3.0-40.0, 0.02-0.81, 23.7-104.6 µg/l, and 0.1-111.6, 17.5-482.5, 0.001-0.145, 46.8-303.6 µg/g.dw, respectively. As a conclusion, water quality of Aras River was classified as class III (moderately polluted) based on mean concentration of Cu. Mo concentration was found to be less than permissible level. Water quality of Aras River was classified as class IV and II based on mean values of Hg and As, respectively. Maximum levels of Mo and Cu in surface sediments were found at stations 3 and 4 during all seasons, which is because of effluents and sewage from Mo, gold and other metal mines from Armenia. Mean concentration of As at surface sediment was higher than recommended standard value, but concentration of Hg was lower than recommended value. Manuscript profile
      • Open Access Article

        5 - Investigation of physicochemical properties of water in downstream areas of selected dams in Aras catchment and water quality assessment (Case study: Aras catchment in the border area of Iran and Armenia)
        Ebrahim Safizadeh Dariush Karimi Hamid Reza Gahfarzadeh Seyed Abbas Pourhashemi