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Zeddouri A., Ben Elkheir A., Hadj-Said S., Taupin Jean-Denis, Leduc Christian, Patris Nicolas. (2018). Analysis and interpretation of electrical resistivity tomography data of alluvial aquifer of Tamanrasset Southern Algeria. In : Salam C.T. (ed.), Aillerie M. (ed.), Papageorgas P. (ed.), Haider A.J. (ed.), Vokas G. (ed.), Jabur A.R. (ed.) Technologies and materials for renewable energy, environment and sustainability. New York : AIP Publ., 1968, 020024-1-020024-8. (AIP Conference Proceedings). TMREES18 : Technologies and Materials for Renewable Energy, Environment and Sustainability, Beyrouth (LBN), 2018/02/01-03. ISBN 978-0-7354-1675-8

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Lien direct chez l'éditeur doi:10.1063/1.5039183

Titre
Analysis and interpretation of electrical resistivity tomography data of alluvial aquifer of Tamanrasset Southern Algeria
Année de publication2018
Type de documentPartie d'ouvrage
AuteursZeddouri A., Ben Elkheir A., Hadj-Said S., Taupin Jean-Denis, Leduc Christian, Patris Nicolas.
InSalam C.T. (ed.), Aillerie M. (ed.), Papageorgas P. (ed.), Haider A.J. (ed.), Vokas G. (ed.), Jabur A.R. (ed.) Technologies and materials for renewable energy, environment and sustainability
SourceNew York : AIP Publ., 2018, p. 020024-1-020024-8. (AIP Conference Proceedings). ISBN 978-0-7354-1675-8
ColloqueTMREES18 : Technologies and Materials for Renewable Energy, Environment and Sustainability, Beyrouth (LBN), 2018/02/01-03
RésuméA groundwater exploration work in the Tamanrasset region in southern Algeria was started in August 2016 to assess the water reserves in the hydrogeological system related to the Oued Tamanrasset underflow water table which overcomes a volcanic basement. Five (05) electrical resistivity tomography (ERT) surveys were conducted in Tamanrasset area by using ABEM Terrameter LS system. the low electrical contrast between wet alluvium and water saturated alterites makes difficult the electrical response interpretation. to overcome the difficulties of interpretation of ERT profiles, field investigations, laboratory tests and software simulations, were carried out in order to clearly identify the structure of the hydrogeological system. The experimental investigation of the electrical characteristics of the alluvium as a function of water saturation was carried by the use of two devices (Wenner α and Schlumberger). Samples true resistivity values varies between 50 Ω.m for a 100% saturated sample and 1250 Ω.m for a 25% saturation sample. The interpretation of the measurements by the RES2DINV software made it possible to give 2D images of the subsoil up to a depth of 50 m. the electrical contrast between the bedrock and the overlying formations made it possible to identify it, however, it was difficult to distinguish alterites from alluvium. A methodology combining piezometric survey, geo-electrical measurements and field observations improves the interpretation of electrical tomography profiles and the application of the ERT method for accurate characterization of water resources in the Tamanrasset region.
Plan de classementFonctionnements des systèmes d'eau et modélisation [062EVAEAU02] ; Géophysique : généralités [066GPHGEN]
DescripteursRESSOURCES EN EAU ; AQUIFERE ; GEOPHYSIQUE ; TOMOGRAPHIE ; MODELE NUMERIQUE DE TERRAIN ; RESISTIVITE ELECTRIQUE
Descr. géo.ALGERIE ; TAMANRASSET ; ZONE ARIDE
LocalisationFonds IRD [F B010073364]
Identifiant IRDfdi:010073364
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010073364

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