title: A GIS-based DRASTIC vulnerability and net recharge reassessment in an aquifer of a semi-arid region (Metline-Ras Jebel-Raf Raf aquifer, Northern Tunisia).
abstract: This paper aims to elaborate new generic DRASTIC aquifer vulnerability maps of the coastal aquifer of Metline-Ras Jebel-Raf Raf (Northeast of Tunisia) using the GIS technique, making the data analyses easier to handle and providing better capabilities of dealing with large spatial data. A similar study was carried out in 1999 in the same aquifer using a method based on the soil water balance equation to determine the net recharge parameter. Unfortunately, the lack of data in the study area made the results unsatisfactory. By applying the Williams and Kissel equation and the Rao relationship, we intend to demonstrate that we could correctly evaluate the net recharge parameter. Moreover, new data related to the aquifer hydraulic conductivity, the soil cover and the vadose zone lithology have become available, and allowed us to elaborate suitable DRASTIC maps.
authors.affiliation: Université de Tunis El Manar, Faculté des Sciences de Tunis, Département de Géologie, Laboratoire des Ressources Minérales et Environnement, 2092 Tunis, Tunisie. hafedh.hamza@fst.rnu.tn
authors.forename: M H
authors.initials: MH
authors.lastname: Hamza
authors.forename: A
authors.initials: A
authors.lastname: Added
authors.forename: R
authors.initials: R
authors.lastname: Rodríguez
authors.forename: S
authors.initials: S
authors.lastname: Abdeljaoued
authors.forename: A
authors.initials: A
authors.lastname: Ben Mammou
mesh_terms: D004777:Environment; D004784:Environmental Monitoring / Q000379:methods*; D040362:Geographic Information Systems; D005843:Geography; D008962:Models, Theoretical; D014416:Tunisia; D014872:Water Movements; D014881:Water Supply