Hydrogeological framework and estimation of aquifer hydraulic parameters using geoelectrical data: a case study from West Iran
Abduulah Taheri Tizro & Kostantanous S. Voudouris &
Mortaza Salehzade & Hassan Mashayekhi
Hydrogeology Journal (2010) 18: 917–929
AT Tizro, KS Voudouris, M Salehzade… - Hydrogeology …, 2010 - academia.edu
Abstract
Detailed local geological, geophysical, and hydrogeological investigations were carried out for the alluvial aquifer in the Kangavar basin, West Iran to delineate the architecture of different subsurface geological horizons using lithologs and generated vertical electrical sounding (VES) data. An attempt has also been made to estimate aquifer transmissivity from resistivity data. Forty VESs were recorded with the Schlumberger electrode configuration in the study area; 28 of these were selected for evaluation. The maximum current electrode spacing was 400–500m. The data obtained were interpreted by computer iterative modeling with curve matching for calibration purposes. In order to ascertain the subsurface geological framework, the general distribution of resistivity responses of the geological formations was obtained and geoelectrical sections along a number of lines were prepared. Probable aquifer horizons from these sections were identified. The transmissivity of the uncon- fined aquifer was computed by determining the DarZarrouk parameters (longitudinal unit conductance and transverse unit resistance) and were compared with the actual field transmissivity. The results showed a direct relation between aquifer transmissivity and modified transverse resistance.
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