Mapping groundwater recharge potential zones in arid region using GIS and Landsat approaches,southeast Tunisia |
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| Authors: | Dhekra Souissi Mohamed Haythem Msaddek Lahcen Zouhri Ismail Chenini Moufida El May Mahmoud Dlala |
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| Institution: | 1. UR13ES26, Paléoenvironnement, Géomatériaux et Risques Géologiques, Faculté des sciences de Tunis, Université de Tunis El Manar, Tunis, Tunisia;2. AGHYLE, Institut Polytechnique UniLasalle, Beauvais, France |
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| Abstract: | The rapid growth of population and agricultural and industrial activities has caused an increase in demand on the Jeffara aquifers of Gabes (southeast Tunisia). In fact, the over-pumping of this aquifer system has resulted in water-level declines ranging from 0.25 to 1 m/year during the past three decades. The aim of this study is to identify favourable artificial recharge sites of this aquifer system based on the combined use of remotely sensed data, a geographic information system (GIS), the Shuttle Radar Topography Mission (SRTM) product and a multiple criteria decision making (MCDM) technique. The delineation of artificial recharge zones shows high to moderate potential for groundwater recharge (40%) in the Gabes region, with high precision of good potential proposed sites. Recharge processes need to account for natural conditions and ecosystems. |
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| Keywords: | GIS remote sensing SRTM MCDM artificial recharge arid zone |
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