Modeling of Ground Water Salinity on the Caspian Southern Coasts |
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Authors: | Vahid Gholami Zabihollah Yousefi Hosseinali Zabardast Rostami |
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Affiliation: | (1) Department of Geology, Faculty of Sciences and Techniques, P.O. Box 597 Beni Mellal, Morocco;(2) Department of Geology, Faculty of Sciences, University Ibn Tofail, P.O. Box 133 Kenitra, Morocco;(3) Department of Geology, Faculty of Sciences, P.O. Box 2390 Semlalia, Marrakech, Morocco; |
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Abstract: | Water salinity is one of the main restrictive factors in water exploiting. Also, unsuitable management and exploitation of
water resources has led to an increase of surface and groundwater salinity. Thus, in view of human needs to water resources,
it is necessary to study and define water salinity factors in order to weaken these factors. This research has been conducted
to investigate the factors of groundwater salinity and also, to provide a model for estimating groundwater salinity on the
Caspian southern coasts. Data included in the model are: water qualitative examinations in the area, annual precipitation
and evaporation, water table depth, surface water salinity, aquifer formation (Transmissivity) and distance from Caspian Sea.
Surface and groundwater salinity was estimated by sampling in different sites on the Caspian southern coasts. Then, Multivariate
Regression method was used by using SPSS software. In this stage, groundwater EC has been used as a variable for water salinity
or dependent variable and groundwater salinity factors have been used as independent variables. A linear model and a non-linear
model were presented. The models efficiency was evaluated by applying them in the sites that their data were not used for
presenting the models. Finally, groundwater EC average map was provided by using the presented non-linear model and Geographic
Information System in the Eastern part of Mazandaran province. In view of salinity hazard increases in the coastal terrains
and agricultural areas, the places with high hazard salinity must be defined and managed to decrease water resources salinity. |
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