Survey (Topographical & Geophysical)

Geophysical survey is used to create maps of subsurface archaeological features most commonly through the use of magnetometers, electrical resistance meters, ground-penetrating radar (GPR) and electromagnetic (EM) conductivity meters. Geophysical instruments can detect buried features, such as walls and ditches, when their electrical or magnetic properties contrast measurably with their surroundings. In some cases, individual artefacts, especially metal, may be detected as well.

Readings taken in a systematic pattern become a data set that can be rendered as image maps. Survey results can be used to guide excavation and to give archaeologists insight into the patterning of non-excavated parts of the site. Unlike other archaeological methods, geophysical survey is not invasive nor destructive.

For over 10 years, all of our geophysical surveys have been coordinated by our associate organisation Phase-Site-Investigations, leading specialists in their field.

If you’re looking to commission a geophysical survey, then please get in touch and we can discuss options.

Case Studies: Recent geophysical surveys include: