Next Article in Journal
Moving beyond the Mirage: Water Scarcity and Agricultural Use Inefficiency in USA
Previous Article in Journal
An Ensemble Climate-Hydrology Modeling System for Long-Term Streamflow Assessment in a Cold-Arid Watershed
Open AccessArticle

The Potential Use of Geophysical Methods to Identify Cavities, Sinkholes and Pathways for Water Infiltration

Environmental Engineering and Earth Science Department, Clemson University, Clemson, SC 29634, USA
Department of Geography, University of Brasilia, Brasilia 70910-900, Brazil
Institute of Geoscience, University of Brasilia, Brasilia 70910-900, Brazil
Department of Built Environment, University of Derby, Derby DE22 3AW, UK
Department of Geology and Geophysics, National University of San Agustín de Arequipa, Arequipa 04000, Peru
Department of Earth Sciences, University of Oregon, Eugene, OR 97403, USA
Three Gorges Research Center for Geo-Hazards, Ministry of Education, China University of Geosciences, Wuhan 430074, China
Department of Civil and Environmental, Nagaoka University of Technology, Niigata 40-2188, Japan
Department of Geophysical Engineering, National Autonomous University of Mexico, Mexico City 04510, Mexico
Author to whom correspondence should be addressed.
Water 2020, 12(8), 2289;
Received: 27 June 2020 / Revised: 4 August 2020 / Accepted: 6 August 2020 / Published: 14 August 2020
(This article belongs to the Section Hydrology and Hydrogeology)
The use of geophysical characterization of karst systems can provide an economical and non-invasive alternative for extracting information about cavities, sinkholes, pathways for water infiltration as well as the degree of karstification of underlying carbonate rocks. In the present study, three geophysical techniques, namely, Ground Penetrating Radar (GPR), Electrical Resistivity Tomography (ERT) and Very Low Frequency Electromagnetic (VLFEM) methods were applied at three different locations in relation to fluvial karst, which is listed as an environmentally sensitive area in Rio Vermelho, Mambaí, Goiás, Brazil. In the data acquisition phase, the GPR, direct-current (DC) resistivity and VLFEM profiles were obtained at the three locations in the area. Data were analyzed using commonly adopted processing workflows. The GPR results showed a well-defined lithology of the site based on the amplitude of the signal and radar typologies. On the other hand, the inverted resistivity cross-sections showed a three-layered stratigraphy, pathways of water infiltration and the weathered structures in carbonate (Bambui group). The interpretation of VLFEM as contours of current density resulted from Fraser and Karous–Hjelt filters, indicated the presence of conductive structures (high apparent current density) that might be linked to the weathered carbonate and other conductive and resistive anomalies associated with the water-filled and dry cavities (cave), respectively. The results encourage the integrated application of geophysical techniques such as the reconnaissance for further detailed characterization of the karst areas. View Full-Text
Keywords: Tarimba cave; ERT; GPR; VLFEM Tarimba cave; ERT; GPR; VLFEM
Show Figures

Figure 1

MDPI and ACS Style

Hussain, Y.; Uagoda, R.; Borges, W.; Nunes, J.; Hamza, O.; Condori, C.; Aslam, K.; Dou, J.; Cárdenas-Soto, M. The Potential Use of Geophysical Methods to Identify Cavities, Sinkholes and Pathways for Water Infiltration. Water 2020, 12, 2289.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop