Journal of Forensic Sciences · 2019 · 13 citations · 50 references
Natural SciencesEarth SciencesGeophysicsApplied GeophysicsGeomagnetismSurveyingElectromagnetic MethodsElectromagnetic SurveyingGeophysical Data ProcessingGeophysical Signal ProcessingGround-penetrating RadarSite InvestigationBulk ConductivityBulk Soil Electrical ConductivityBurialDetectorsElectromagnetic SurveyGeophysical InterpretationGeophysical Site InvestigationGround-penetrating Radar Surveys
Police witness intelligence stated a murdered adult male "Fred" had been vertically buried in wooded hilly terrain 30 years ago in the Midlands, U.K. Conventional search methods were unsuccessful; therefore, the police requested a geophysical investigation to be undertaken to determine whether "Fred" could be detected. A multiphased geophysical approach was conducted, using bulk ground conductivity and metal detectors, then follow-up magnetics and ground penetrating radar (GPR) survey profiles on electromagnetic (EM) anomalous areas. A tight grid pattern was used to account for the reduced target size. Relatively high-resolution EM and GPR techniques were determined optimal for this terrain and sandy soil. Geophysical anomalies were identified and the most promising intrusively investigated, and this was found to be a large boulder and tree roots. Study implications suggest careful multiphase geophysical surveys are best practice and give confidence in cold case searches. This study yielded a no-body result, effectively saving police time and costs from further investigations.
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