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Determining geophysical responses from burials in graveyards and cemeteries

Dick, H, Pringle, J, Wisniewski, K, Goodwin, J, van der Putten, R, Evans, G, Francis, J, CASSELLA, John and Hansen, J (2017) Determining geophysical responses from burials in graveyards and cemeteries. GEOPHYSICS, 82 (6). pp. 1-11. ISSN 1942-2156

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Abstract or description

Graveyards and cemeteries around the world are increasingly designated as full. Therefore, there is a requirement to identify vacant spaces for new burials or to identify existing ones to exhume and then reinter if necessary. Geophysical methods offer a potentially noninvasive target detection solution; however, there has been limited research to identify optimal geophysical detection methods against burial age. We have collected multifrequency (225–900 MHz) ground-penetrating radar (GPR), electrical resistivity, and magnetic susceptibility surface data over known graves with different burial ages and soil types in three UK church graveyards. Results indicate that progressively older burials are more difficult to detect, but this decrease is not linear and is site specific. Medium- to high-frequency GPR and magnetic susceptibility was optimal in clay-rich soils, medium- to high-frequency GPR and electrical resistivity in sandy soils, and electrical resistivity and low-frequency GPR in coarse sand and pebbly soils, respectively. A multigeophysical technique approach should be used by survey practitioners where grave locations are not known to maximize target detection success. Grave soil and grave cuts are important grave position indicators. Grave headstones were not always located where burials were located. We have determined the value of these techniques in grave detection and could potentially date burials from their geophysical responses.

Item Type: Article
Faculty: School of Law, Policing and Forensics > Criminal Justice and Forensic Science
Depositing User: John CASSELLA
Date Deposited: 02 Nov 2017 13:04
Last Modified: 24 Feb 2023 13:49

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