Karstic aquifer structure from geoelectrical modeling in the Ring of Sinkholes, Mexico
- Permanent Link:
- Karstic aquifer structure from geoelectrical modeling in the Ring of Sinkholes, Mexico
- Series Title:
- Hydrogeology Journal
- Andrade-Gómez, Luisa
Luis Andrade, José
López, Paloma Z.
- Publication Date:
- Subjects / Keywords:
- Karst ( local )
Coastal Aquifer ( local )
Hydrogeology ( local )
Geophysical Methods ( local )
Yucatan, Mexico ( local )
- serial ( sobekcm )
- Groundwater models based on terrain resistivity can show the diverse properties and processes occurring between fractures, boreholes and conduits. Using electrical resistivity tomography, a conceptual model was created of the aquifer within the Ring of Cenotes, which surrounds the Chicxulub Crater on the Yucatan Peninsula, Mexico. Determining the hydrogeological parameters of an aquifer is vital since they determine flux and hydrodynamic patterns. In karstic environments, conventional techniques are not effective at recording heterogeneities such as fracture zones and conduits. Six transects were investigated among areas near cenotes (sinkholes) and aguadas (small surface-water bodies), as well as areas lacking these formations. The resulting profiles reached up to 30 m deep and showed an aquifer consisting of a fractured matrix saturated with freshwater. The matrix exhibiting resistivity values from 3 to 250 Î©m, lying under a vadose zone with values from 300 to 25,000 Î©m. Aguadas and cenotes are surface manifestations of the aquiferâ€™s internal structure, which is a network of caves and conduits. In the Ring of Cenotes, the presence of these surface formations indicates increased hydraulic conductivity in their vicinity, with smaller conduits or fractures providing lesser conductivity in areas further away.
- Original Version:
- Hydrogeology Journal, Vol. 27, no. 7 (2019-07-31).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
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