Pringle, JK and Jervis, JR and Tuckwell, GT (2009) Comparison of Time-lapse GPR and Resistivity over Simulated Clandestine Graves. In: Near Surface 2009: 15th European Meeting of Environmental and Engineering Geophysics, 7-9 Sep 2009, Dublin, Ireland.

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Abstract

Forensic geophysics should be an invaluable tool to assist search teams to detect and locate clandestine graves of buried murder victims. At present however, geophysics is under-utilised and currently used techniques may not be optimal for specific targets or sites. There is a need for geophysical datasets to be collected over known burial sites for varying time periods post-burial. A study site was created with a naked and wrapped pig cadaver. The dimensions are based on available statistics of discovered burials. Monthly surveys using resistivity, Electrical Resistivity Tomography (ERT) and Ground Penetrating Radar (GPR) were performed post-burial. Resistivity results show low anomalies over the naked pig and a smaller high anomaly over the wrapped pig with respect to background values. ERT time-lapse data shows optimum survey periods for the naked and wrapped pigs to be 9 and 3 months respectively. GPR 2D profiles detected both burials, with the wrapped pig exhibiting stronger reflection events. Lower frequency (110 MHz) antennae were found to be the optimal frequency to detect pig burials.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: forensic geophysics, forensic science
Subjects: G Geography. Anthropology. Recreation > GB Physical geography
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
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Depositing User: Symplectic
Date Deposited: 04 Jun 2015 10:47
Last Modified: 04 Jun 2015 10:48
URI: http://eprints.keele.ac.uk/id/eprint/563

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