Author/Authors :
Zahi, Faouzi Université Benyahia Seddik - Département des Sciences de la Terre et de l Univers, Algérie , Djamai, Rachid Université Badji Mokhtar - Département de Biologie, Algérie , Chaab, Salah Université Badji Mokhtar - Département de Géologie, Algérie , Djabri, Larbi Université Badji Mokhtar - Département de Géologie, Algérie , Drouiche, Abdelmalek Centre de Recherche Scientifique et Technique sur les Régions Arides, Algérie , Medjani, Fethi Université Kasdi Merbah - Département de Géologie, Algérie
Abstract :
Fetzara lake is one of the most important lakes in the North-Eastern of Algeria; with an area of about 18600 ha, it was officially classified on the list of Wetlands of International Importance. This dictates the protection of this location. This study was conducted to examine the current state of groundwater chemistry and the origin of their salinity. The results obtained show a presence of three chemicals facies: sodium chloride, calcium chloride and sodium bicarbonate. The electrical conductivity of groundwater oscillates from 350 to 3500 μS I cm where high values are recorded in the North-East (Oued Zied) and the South-East of the lake (Cheurfa). Statistical study by principal component analysis (PCA) showed that chloride and sodium are the main elements responsible for the high mineralization of the water. This excess of mineralization is due to the leaching of subsurface formations and surface waters infiltration; these are strongly influenced by evaporation and ionic exchanges with clay matrix.
NaturalLanguageKeyword :
Salinity , Mineralization , Contamination , Piezometry , Chemical facies , PCA
