Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCE (UNIVERSITY OF TABRIZ)   2003 , Volume 13 , Number 3; Page(s) 69 To 78.
 
Paper: 

SOURCES OF SALINITY IN GROUNDWATER OF SHABESTAR PLAIN AQUIFERS

 
 
Author(s):  ASGHARI MOGHADAM A., MOHAMMADI A.
 
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Abstract: 
The fertile plain of Shabestar is located 40km. west of Tabriz and northeast of Urumiyeh lake and its area is about 617 km^2. Shabestar plain is an active cultivated area with low annual precipitation and surface runoff thus. the groundwater resources have a vital role in supplying agricultural drinking domestic and industrial water demands. Saline water intrusion into the fresh water aquifers is highly increased in recent years and some of abstraction wells are left unused. The purpose of this paper was to determine origin of the water salinity in the plain. Therefore from the previous hydro-geological data and several number of sampling from the plain wells two groups of saline water were distinguished. Group 1 contain the low ratios of S04/Cl and Na/Cl and high percent of Ca + Mg. Saline water of the central parts of the plain lies in this group. Group2 contain the high ratios of SO__4/Cl and Na/Cl and low percent of Ca+Mg. Saline water of the southeast and south margin of the plain lies in this group. In the central parts ratios of SO__4 and Cl to the sum of anions are similar to those of the Urumiyeh Lake. Consequently saline water source in these parts can be related to Urumiyeh Lake. However in the southeast and south margin of the plain ratios of SO4 and Cl to the sum of anions are different from those of the Urumiyeh Lake. Evaporation from the shallow groundwater seepage from saline rivers and dissolution of the evaporational deposits are causes of the salinity.
 
Keyword(s): GROUNDWATER POLLUTION, HYDROGEOCHEMISTRY, SALINE WATER INTRUSION, SHABESTAR PLAIN.
 
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