Home » ArticlesArticlesInvestigation and Classification of Groundwater Salinity Potential in Jovein Plain Aquifer Using GISWriters : Shiekhvanloo,Mahmoud;Poorhasan, Mohammad Refference : The first international applied geological congress; Department of geology Islamic azad university- Mashhad Publishing Year : 2010 Abstract : Jovein plain is located in the northeast of Iran between the longitudes 56o30 to 58 o30 E. and the latitudes 36 o15 to 37 o00 N. One of the major problems in the study area is the increasing salinization of local groundwater. The high levels of salinity, limit the utilization of groundwater for both domestic and agriculture applications. Brackish and saline groundwater resources are important for the future development in many parts of the Jovein city and suburb where fresh groundwater and new surface water supplies are limited, nonexistent or cost prohibitive. This study has been developed to evaluate and classify the groundwater salinity potential in Jovein aquifer using ArcGIS "Spatial Analyst" based on last hydrochemical and hydrogeological data. Hydrochemical data shows that the quality of groundwater in the study area deteriorated after more than two decades of use for irrigation. The results of this study shows, high concentration of salts far exceeding the acceptable limit for various purposes. Spatial map illustrates about 50 % of extent of Jovein aquifer covered by brackish groundwater (1500 mg/l < TDS<700 mg/l), and about 50 % covered by fresh water which TDS is less than 1500 mg/l. Jovein aquifer is divided by eastern and western basin. In the other word, salinization increase from east to west. Several factors such as mineral composition of the aquifer material, geochemical processes, groundwater flow velocity, location of recharge and discharge areas, human action caused salinization in Jovein aquifer. In the eastern part decreasing surface and underground recharge lead to increase salinity. Furthermore evaporate formations such as gypsum and halite caused to intensify problem in the east. In the western part because of increasing lateral and surface recharge, quality of groundwater gradually increased. Subject List : GIS application |
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