Temperature and radon-222 as tracer of groundwater flow: application to El Hamma geothermal aquifer system,southeastern Tunisia     

Agoubi Belgacem  Faiza Souid  Faten Telahigue  Adel Kharroubi 《Arabian Journal of Geosciences》2015,8(12):11161-11174

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Isotopic behavior and self-organizing maps for identifying groundwater salinization processes in Jerba Island,Tunisia     

Souid  F.  Telahigue  F.  Agoubi  B.  Kharroubi  A. 《Environmental Earth Sciences》2020,79(8):1-22

Environmental Earth Sciences - Chott Ain Beida is an inland sabkha located in southern Algeria. Close to Ouargla city, it is surrounded by an exploited palm groove. In this study, modern climate of...  相似文献   

Groundwater chemical and fecal contamination assessment of the Jerba unconfined aquifer,southeast of Tunisia     

Faiza Souid  Belgacem Agoubi  Mohamed Hamdi  Faten Telahigue  Adel Kharroubi 《Arabian Journal of Geosciences》2017,10(10):231

Located in the southeast of Tunisia, on the Mediterranean Sea, Jerba Island has a semiarid climate condition. The surface water scarcity has made groundwater the main source to supply the domestic, touristic, and agricultural water demand. Unconfined aquifer is a vulnerable costal aquifer system that undergoes several phenomena. This work aims at assessing the geochemical and bacteriological groundwater quality, defining groundwater pollution sources and promoting sustainable development and effective management of groundwater resources in Jerba Island. Data were collected after the wet season in 2014 from 79 wells. Electric conductivity, pH, TDS, and major and fecal tracers (total coliforms, thermotolerant coliforms, Escherichia coli, and Salmonella) were analyzed. Geochemical modeling including the relationships between geochemical tracers Na⁺ vs. Cl^?, Ca²⁺ vs. Cl^?, K⁺ vs. Cl^?, representative ionic ratios (Br^?/Cl^?, Na⁺/Cl^?, Mg²⁺/Ca²⁺), and statistical analysis were used to specify major process contributing to groundwater pollution and main factors controlling groundwater mineralization in the island. Groundwater varieties were hydrochemically classified into three types in terms of salinity values: group 1 (8.86%) to fresh water, group 2 (27.84%) to brackish water, and group 3 (63.29%) belongs to saline water. In addition, groundwater quality revealed high concentrations in chemical pollution tracers (Na⁺, Cl^?, SO₄ ^2?, and NO₃ ^?) and fecal tracers. Besides, most of the sampled wells were contaminated with nitrate (50.63%). Also, thermotolerant coliforms and E. coli were detected in all groundwater samples (96.2% of wells). Results indicated that the Jerba shallow aquifer was under serious threat from both natural and anthropogenic contamination. However, the wild discharge of domestic effluents, septic tanks, and sewage were the main origins of underground water contamination in Jerba Island. The reduction of fecal sources, through constructing normalized latrines is thus recommended.  相似文献