Case Study - Keevill Heritage Ltd
A Time-Slice of History
As prize winners of The Great British SUMO Survey, SUMO undertook an exploration to provide geophysical information into a historic Cloister and Chapter House at Rochester Cathedral.
- SUMO were asked us to provide as much information as obtainable to the full extent of the Cloister and Chapterhouse, and the possible relationship with the former Roman city wall which defined the south side to the extant Cloister.
- SUMO carried out a Ground Penetrating Radar (GPR) survey as an efficient and effective method of detecting archaeological remains and buried obstructions in an urban environment.
- The data was post-processed using specialist software. In addition to manual abstraction to the radargrams, a computer analysis was also conducted.
- The GPR data fulfilled the clients requirements and identified complex linear features and identified.
- The survey has revealed a number of potential archaeological remains that are probably associated with 11th and 12th century Chapter Houses, early Norman Cloister arrangement, 19th century Prebendal House, medieval buildings and Dormitory range. The remaining responses are modern and include potential services and evidence of tree roots.
- The survey penetration depth reached approximately 2.30m, with readings taken at 0.05m intervals. The survey was completed using a High Density Array system which employs a 400MHz antenna.
- Potential anomalies of archaeology have been detected, along with responses of uncertain origin, services and tree roots, all indicating that the GPR survey was effective.
- Two of the main advantages of radar are its ability to give information of depth as well as work through a variety of surfaces, even cluttered environments which normally prevent other geophysical techniques being used.