Mapping potential zones for groundwater recharge and its evaluation in arid environments using a GIS approach: Case study of North Gafsa Basin (Central Tunisia)
Autor: | Bartolomé Andreo, Younes Hamed, Matías Mudarra, Salem Bouri, Emna Boughariou, Fatma Ben Brahim, Naziha Mokadem |
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Rok vydání: | 2018 |
Předmět: |
Hydrology
geography education.field_of_study geography.geographical_feature_category 010504 meteorology & atmospheric sciences Lithology Population Geology Aquifer Groundwater recharge Structural basin 010502 geochemistry & geophysics 01 natural sciences Arid Catchment hydrology education Groundwater 0105 earth and related environmental sciences Earth-Surface Processes |
Zdroj: | Journal of African Earth Sciences. 141:107-117 |
ISSN: | 1464-343X |
DOI: | 10.1016/j.jafrearsci.2018.02.007 |
Popis: | With the progressive evolution of industrial sector, agricultural, urbanization, population and drinking water supply, the water demand continuously increases which necessitates the planning of groundwater recharge particularly in arid and semi-arid regions. This paper gives a comprehensive review of various recharges studies in the North Gafsa basin (South Tunisia). This latter is characterized by a natural groundwater recharge that is deeply affected by the lack of precipitations. The aim of this study is to determine the recharge potential zones and to quantify (or estimate) the rainfall recharge of the shallow aquifers. The mapping of the potential recharge zones was established in North Gafsa basin, using geological and hydrological parameters such as slope, lithology, topography and stream network. Indeed, GIS provide tools to reclassify these input layers to produce the final map of groundwater potential zones of the study area. The final output map reveals two distinct zones representing moderate and low groundwater potential recharge. Recharge estimations were based on the four methods: (1) Chloride Method, (2) ERAS Method, (3) DGRE coefficient and (4) Fersi equations. Therefore, the overall results of the different methods demonstrate that the use of the DGRE method applying on the potential zones is more validated. |
Databáze: | OpenAIRE |
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