| More

Application of Electrical Resistivity Tomography to the detection of the Ermakia (Northern Greece) cavity system

Views: 191 Downloads: 164
G. Vargemezis, P. Tsourlos, C. Papazachos, D. Kostopoulos
G. Vargemezis, P. Tsourlos, C. Papazachos, D. Kostopoulos


Electrical resistivity tomography has been applied for the exploration of a karstic cave system at the region of Ermakia, next to the city of Ptolemais (NWt Greece). Geological investigations indicated that the main known Ermakia cave chamber "communicates " with at least one underground karstic ovoid. This evidence lead us to prospect the surrounding area by applying 2-D Electrical tomography survey on a regular grid in both x,y directions. Survey lines crossed the known cave in order to verify k the suitability of the method at the specific area and calibrate the resistivity values. Resistivity data were inverted and results were compiled in qusi3-D resistivity images. The interpreted results indicated the existence of two more chambers next to the known one which is in agreement with in-situ observations.


Electric tomography; seismic refraction tomography; cave mapping

Full Text:



Cardarelli, E., Marrone C, and Orlando L., 2003. Evaluation of tunnel stability using integrated geophysical methods, Journal of Applied Geophysics, 52 (2-3), 93-102.

Chamberlain, A.T., Sellers, W., and Proctor, C, 2003. Cave detection in limestone using ground penetrating radar. Journal of Archaeological Science, 27. (10), 957-964 OCT 2000.

El-Qady, G., Hafez, M., and Abdalla, M, 2005. Imaging subsurface cavities using geoelectric tomography and ground-penetrating radar, Journal of Cave Karst studies, 67 (3), 174-181.

Gibson, P.J., Lyle, P., and George, D.M., 2004. Application of resistivity and magnetometry geophysical techniques for near-surface investigations in karstic terranes in Ireland, Journal of Cave Karst studies, 66 (2), 35-38.

Leucci, G., and De Giorgi, L., 2005. Integrated geophysical surveys to assess the structural conditions of a karstic cave of archaeological importance, Nat. Hazard Earth Sys., 5 ( 1), 17-22.

McCann, D.M., Jackson, P.D., and Culshaw, M.G., 1987. The use of geophysical surveying methods in the detection of natural cavities and minshafts, Quarterly Journal of Engineering Geology, 20, 59-73.

Madrussani, G., Böhm, G., Vesnaver, Α., and Schena, G., 1999. Tomographic detection of cavities in mines for acid drainage control, European Journal of Environmental and Engineering Geophysics, 3, 115-130.

Nath, SK, 2004. Cross-hole seismic tomography - A geophysical tool for detecting mine galleries, Nat. Acad. Sci. Lett., 27 (3-4), 77-94.

Piro, S., Tsourlos, P., and Tsokas, G., 2001. Cavity detection employing advanced geophysical techniques: a case study, European Journal of Environmental and Engineering Geophysics, 6,3-31.

Santos, F., and Afonso, Α., 2005. Detection and 2d modelling of cavities using pole-dipole array, Environmental Geology, 48 (1), 108-116.

Styles, R., McGrath, R., and Thomas, E., 2005. The use of microgravity for cavity characterization in karstic terrains, QJEng. Geol. Hydrog, 38, 155-169

Tsourlos, P., 1995. Modelling, interpretation and inversion of multi-electrode resistivity survey data, D.Phil. Thesis, University of York, U.K.

Tsourlos, P., Szymanski, J., and Tsokas, G. 1998. A smoothness constrained algorithm for the fast 2-D inversion of DC resistivity and induced polarization data, Journal of the Balkan Geophysical Society, 1, 1, 3-13.

Zhou, QY, Matsui, H, and Shimada, J., 2004. Characterization of the unsaturated zone around a cavity in fractured rocks using electrical resistivity tomography, Journal of Hydrological Research, 42, 25-31.


  • There are currently no refbacks.

Copyright (c) 2018 G. Vargemezis, P. Tsourlos, C. Papazachos, D. Kostopoulos

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.