| Popis: |
Earth resistance, magnetic and Ground Penetrating Radar (GPR) surveys were conducted to demonstrate geophysical techniques for archaeological prospection as part of a Science Engineering and Technology week organised in March 1998. Further details of methodology in Geophysical Survey Section. Earth resistance, magnetic and Ground Penetrating Radar (GPR) surveys were conducted at Clun Castle, Clun, Shropshire, to demonstrate geophysical techniques for archaeological prospection as part of a Science Engineering and Technology week organised in March 1998. Due to the limited success and coverage of the surveys the results were not formally reported at the time, but have been completed now following a request to include these in a wider publication summarising all research conducted at the site. The earth resistance survey (0.4 ha) suggests tentative evidence for some structural remains within both of the outer baileys covered with this technique, and there is some correlation with the fluxgate gradiometer results (0.3 ha) in the South East Bailey, despite the presence of ferrous interference. Results from the trial GPR profiles were of limited use due to the shallow penetration depth of the higher centre frequency antenna used over the South East Bailey and the 2 m wide spacing between the parallel profiles. Some more useful results were obtained from the North East Bailey with a lower centre frequency antenna, although these could not be used to confidently confirm the presence of structural remains suggested by the earth resistance survey. |
