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Comparison of GPR signals over simulated clandestine graves with domestic pigs (Sus Scrofa domesticus) and human remains.
Armstrong, Aidan; Doro, Kennedy O; Cristino, Katrina; Ribéreau-Gayon, Agathe; Forbes, Shari L; Wadsworth, William T D; Bank, Carl-Georg.
Afiliación
  • Armstrong A; Department of Earth Sciences, University of Toronto, Toronto, Ontario, Canada.
  • Doro KO; Department of Environmental Sciences, University of Toledo, Toledo, Ohio, USA.
  • Cristino K; Department of Earth Sciences, University of Toronto, Toronto, Ontario, Canada.
  • Ribéreau-Gayon A; Groupe de Recherche en Science Forensique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada.
  • Forbes SL; Groupe de Recherche en Science Forensique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada.
  • Wadsworth WTD; Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada.
  • Bank CG; Institute of Prairie and Indigenous Archaeology/Department of Anthropology, University of Alberta, Edmonton, Alberta, Canada.
J Forensic Sci ; 2024 Sep 04.
Article en En | MEDLINE | ID: mdl-39233368
ABSTRACT
Studies assessing the use of ground-penetrating radar (GPR) for locating unmarked human graves commonly use pigs as proxies, with recent concerns about the adequacy of pigs as substitutes for humans. Also, there is little agreement on how to identify and describe GPR signals associated with graves. Hence, this project's aim is to compare GPR signals acquired over simulated clandestine graves with pig and human remains. We established human, pig, and control graves at the REST[ES] human decomposition facility in May 2022 and monitored the graves over 17 months using a 250 MHz antenna GPR system. Our results showed the presence of perturbed and V-shaped reflectors, diffraction hyperbolas, and reflectors with amplitude loss at depth between 0.6 and 0.75 m in the radargram for graves with human and pig remains. We corroborate recent studies which concluded that the use of proxies is a viable alternative to human cadavers. The observed radar signatures were classified into five key patterns, which are characteristic of similar data collected with 250 MHz above graves reported in the literature. These classes are V-shaped dipping reflections from grave walls (class A), small hyperbolic reflections superimposed onto a near-linear reflector (class B), hyperbolic reflections from remains within the grave (class C), new high-amplitude reflection patterns (class D) and significant loss or interruption of reflections (class E). Our proposed classification can help streamline future investigations where the goal is to interpret burials within large GPR datasets and provide language to communicate these results to the broader scientific community.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Forensic Sci Año: 2024 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Forensic Sci Año: 2024 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Estados Unidos