The geophysical survey technique of Ground Penetrating Radar (GPR) is based upon the use of an electromagnetic radar wave propagated through the soil to search for changes in soil composition and the presence of structures, measuring the time in nanoseconds (ns) taken for the radar wave to be sent and the reflected wave to return.
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This technique has been applied successfully on a range of archaeological sites, in particular over substantial urban archaeological remains. GPR has been used by the British School at Rome at the Domus Aurea in Rome, at Forum Novum in the Sabina, and at Italica in Spain. It should be noted that the use of GPR is more time consuming than the application of magnetometry or resistivity. It is therefore recommended that this technique is used to target particular areas of interest at an archaeological site where magnetometry or resistivity have already been applied, or where there is a potential for deeper archaeological deposits. The BSR operates a Sensors and Software radar system, configured for use with a Smartcart frame and console. This utilises a 500 Mhz antenna, which allows propagation of radar waves down to a depth of approximately 3-4m depending on the nature of the sub-surface materials. |
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Further Reading Clark, A. 1996, Seeing Beneath the Soil: Prospecting Methods in Archaeology. Second Edition. London; Batsford. Conyers, L.B. and Goodman, D. 1997, Ground Penetrating Radar: An Introduction for Archaeologists. Oxford; Altamira Press. Gaffney, C. and Gater, J. 2003, Revealing the Buried Past. Stroud; Tempus. Gaffney, V., Patterson, H., Piro, S., Goodman, D. and Nishimura, Y. 2004, Multimethodological approach to study and characterize Forum Novum (Vescovio, Central Italy). Archaeological Prospection 11, 201-212. |
