Ground Penetrating Radar (GPR)
Ground Penetrating Radar is a geophysical technique capable of detecting multiple buried layers at depth. The instrument works by passing an electromagnetic pulse into the ground, which reflects off the underlying buried layers. These reflections are digitally recorded enabling sections or plans of the archaeology to be assessed.
Multiple layers and anomalies can be detected using Ground Penetrating Radar, while depth information can also be gained. The instrumentation can be used in rural environments as well as urban areas covered in tarmac or concrete, for example under roads or within buildings.
Ground Penetrating Radar can detect a large number of possible archaeological features including:
- Voids - caves, tomb shafts etc
- Souterrains
- Masonry / Walls
- Ditches
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