Knowra Forensic geophysics Forensic geophysics Forensic geophysics applies non-invasive geophysical measurements to locate and characterize buried evidence, clandestine graves, and other subsurface features in investigations.
Ground-penetrating radar : A radar method that images shallow subsurface structures from reflections of transmitted electromagnetic waves. Radar reflections can reveal grave cuts, buried objects, and disturbed soil.
Forensic archaeology : The application of archaeological methods to legal investigations, especially the recovery and interpretation of buried evidence. Archaeological survey and controlled excavation ground-truth geophysical anomalies.
Geophysics : The study of Earth through measurements of its physical properties and processes. Forensic applications adapt geophysical measurement techniques to evidentiary questions.
Ground-penetrating radar versus electrical resistivity tomography : A comparison of radar reflection imaging with electrode-based mapping of electrical resistivity. Their complementary sensitivities help determine which method suits local soils and targets.
Geophysical inversion : The mathematical estimation of subsurface properties from measured geophysical data. Different subsurface models can explain similar measurements, limiting certainty about target identity.
Electrical resistivity tomography : A method that estimates subsurface electrical resistivity from currents injected through electrodes and measured voltages. Resistivity contrasts can distinguish graves and disturbed ground from surrounding soil.
Search and recovery : The organized process of locating, documenting, and recovering missing persons or evidence. Geophysical surveys help narrow search areas before intrusive recovery begins.
Soil science : The study of soil formation, properties, classification, and functioning. Soil texture, moisture, and composition control many subsurface signals.
Remote sensing : The acquisition of information about objects or areas without direct physical contact. Remote sensing generally maps surfaces or broad areas, while forensic geophysics probes shallow subsurface structure.
Detection limit : The smallest signal or target that a measurement method can reliably distinguish from background. Small, deep, or old features may produce signals below practical survey sensitivity.
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