E3S Web of Conferences
Volume 24, 2017AG 2017 - 3rd International Conference on Applied Geophysics
|Number of page(s)||8|
|Section||Geophysics in geoengineering|
|Published online||20 November 2017|
Numerical modelling of GPR electromagnetic fields for locating burial sites
Istituto Nazionale di Oceanografia e di Geofisica Sperimentale OGS, 34010 Trieste, Italy
2 AGH University of Science and Technology, 30-059 Krakow, Poland
* Corresponding author: email@example.com
Ground-penetrating radar (GPR) is commonly used for locating burial sites. In this article, we acquired radargrams at a site where a domestic pig cadaver was buried. The measurements were conducted with the ProEx System GPR manufactured by the Swedish company Mala Geoscience with an antenna of 500MHz. The event corresponding to the pig can be clearly seen in the measurements. In order to improve the interpretation, the electromagnetic field is compared to numerical simulations computed with the pseudo-spectral Fourier method. A geological model has been defined on the basis of assumed electromagnetic properties (permittivity, conductivity and magnetic permeability). The results, when compared with the GPR measurements, show a dissimilar amplitude behaviour, with a stronger reflection event from the bottom of the pit. We have therefore performed another simulation by decreasing the electrical conductivity of the body very close to that of air. The comparison improved, showing more reflections, which could be an indication that the body contains air or has been degraded to a certain extent that the electrical resistivity has greatly increased.
© The Authors, published by EDP Sciences
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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