Niang M.F.K., Diouf Same. (1997). Méthode électrique 2D appliquée à la recherche des aquifères du granite de Saraya (Sénégal). In :
Albouy Yves (ed.), Montoroi Jean-Pierre (ed.), Tabbagh A. (ed.), Zerbib Nicole (ed.). Géophysique des sols et des formations superficielles : abstracts et résumés étendus. Paris : ORSTOM, p. 59-63 multigr. Géophysique des Sols et des Formations Superficielles : Colloque GEOFCAN, Bondy (FRA), 1997/09/11-12.
Titre du document
Méthode électrique 2D appliquée à la recherche des aquifères du granite de Saraya (Sénégal)
Année de publication
1997
Type de document
Colloque
Auteurs
Niang M.F.K., Diouf Same
In
Albouy Yves (ed.), Montoroi Jean-Pierre (ed.), Tabbagh A. (ed.), Zerbib Nicole (ed.)Géophysique des sols et des formations superficielles : abstracts et résumés étendus
Source
Paris : ORSTOM, 1997,
p. 59-63 multigr.
Colloque
Géophysique des Sols et des Formations Superficielles : Colloque GEOFCAN, Bondy (FRA), 1997/09/11-12
Groundwater occurrence is generally restricted to linear structural features for the birimian granite of eastern Senegal. Some lineaments, obtained from satellite Spot imagery, were selected with regard to drillhole flowrates. Geoelectric survey, involving multi-electrode ABEM Lund Imaging System, is carried out across lineaments. Apparent resistivity of vertical pseudo-sections shows low resistivity channels deeper than the weathered layer. 2-D inversion of resistivity data suggests that the higher rate of fracturation from 20 to 60 meters in depth can be interpreted as a potential aquifer. Hydrogeologic parameters are deduced for any case by relationships between resistivity and hydrochemical characteristics of wells water and boring holes water. (Résumé d'auteur)
