Lanscaper and Geophysical Services

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.

Ground Penetrating Radar (GPR) is a very high spatial resolution technique
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
Ground Penetrating Radar can detect archaeological features
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)

Archaeological Geophysics Techniques
| Airborne LiDAR | Magnetic Susceptibility | Magnetic Gradiometry | Earth Resistance | Electrical Resistivity Tomography (ERT) | Ground Penetrating Radar (GPR) | Metal Detection | Electromagnetic Methods |

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