Archaeological Geophysics
Ground Penetrating Radar
Ground Penetrating Radar
Ground Penetrating Radar (GPR) is a very high spatial resolution technique which allows two-dimensional time and depth sections or horizontal time and depth slices to be produced. The technique transmits pulses of electromagnetic energy into the ground and records their reflection or absorption by sub-surface features. It is a technique that can detect sub-surface features under tarmac, concrete etc.
Depending on the targets sought, choice of antenna frequency, sampling interval and suitable ground conditions GPR can detect sub-surface features in the range of a few centimetres to about 10m.
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Cart-mounted ground penetrating radar (GPR).
(Photo: Chris Randolph) |
Ground Penetrating Radar can detect possible archaeological features including:
- Caves, crypts, voids
- Souterrains
- Floors, masonry
- Ditches
- Walls
GPR horizontal depth slice from a multi-period site showing the enclosing ditches
of a possible longhouse associated with a grave. (after Barton et al., 2009)
Other Archaeological Geophysics
Techniques
| Magnetic Susceptibility
| Magnetic Gradiometry
| Earth Resistance
| Electrical Resistivity Tomography (ERT)
| Ground Penetrating Radar (GPR)
| Metal Detection
| Electromagnetic Methods |
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Landscape and Geophysical Services
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Claremorris
County Mayo
Ireland
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