[1] Natl Engn Coll Sfax Tunisia ENIS, Water Energy & Environm Lab L3E, St Soukra Km 3-5,BPW, Sfax 3038, Tunisia
[2] Univ Setif, Inst Earth Sci, Geol & Environm Lab, Setif, Algeria
[3] Fac Sci Gabes, Dept Earth Sci, City Campus, Gabes 6072, Tunisia
[4] Scottish Univ, Environm Res Ctr, SUERC, Rankine Ave,Scottish Enterprise Technol Pk, Glasgow G75 0QE, Lanark, Scotland
[5] Univ Badji Mokhtar, Dept Earth Sci, Annaba 23000, Algeria
[6] Water Resources Div Gafsa, Tunis, Tunisia