Hydrogeophysical Characterization of Fractured Aquifers for Groundwater Exploration in the Federal District of Brazil
Journal article
Authors | Hussain, Yawar, Campos, José Eloi Guimarães, Borges, Welitom Rodrigues, Uagoda, Rogério Elias Soares, Hamza, Omar and Havenith, Hans-Balder |
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Abstract | The present study applies a geophysical approach to the Federal district of Brazil, a challenging hydrogeologic setting that requires improved investigation to enhance groundwater prospecting to meet the rising water demand. The geophysical characterization of a complex hard-rock aquifer sub-system was conducted using direct current (DC) electrical resistivity tomography (ERT) integrated with surface geological information. With a total of twenty-seven ERT profiles, the resistivity acquisition was carried out using a dipole-dipole array of electrodes with an inter-electrode spacing of 10 m. Based on resistivity ranges, the interpretation of the inverted resistivity values indicated a ground profile consisting of upper dry soil, saprolite, weathered, and fresh bedrock. Along with this layered subsurface stratigraphy, the approach allowed us to map the presence of significant hydrogeological features sharp contrasting anomalies that may suggest structural controls separating high-resistivity (≥7000 Ω m) and low-resistivity (<7000 Ω m) conducting zones in the uppermost 10 m of the ground. The assumed impacts of these features on groundwater development are discussed in light of the Brasilia aquifer settings |
Keywords | Fluid Flow and Transfer Processes; Computer Science Applications; Process Chemistry and Technology; General Engineering; Instrumentation; General Materials Science; dipole-dipole; fractures; saprolite; pumping well |
Year | 2022 |
Journal | Applied Sciences |
Journal citation | 12 (5), p. 2509 |
Publisher | MDPI AG |
ISSN | 2076-3417 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/app12052509 |
Web address (URL) | http://hdl.handle.net/10545/626330 |
http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
hdl:10545/626330 | |
Publication dates | 28 Feb 2022 |
Publication process dates | |
Deposited | 04 Mar 2022, 15:52 |
Accepted | 29 Nov 2021 |
Rights | Attribution-NonCommercial-NoDerivatives 4.0 International |
Contributors | University of Liege, 4000 Liege, Belgium, University of Brasilia, Brasilia 70910-900, Brazil and University of Derby |
File | File Access Level Open |
File | File Access Level Open |
File | File Access Level Open |
https://repository.derby.ac.uk/item/9369y/hydrogeophysical-characterization-of-fractured-aquifers-for-groundwater-exploration-in-the-federal-district-of-brazil
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