Fort Cumberland, Eastney, City of Portsmouth: Report on Geophysical Surveys, May 2017 to May 2023
Author(s): Megan Clements, Neil Linford, Andy Payne
Ground Penetrating Radar (GPR) and fluxgate magnetometer surveys were conducted at Fort Cumberland, Eastney, City of Portsmouth, as part of a wider non-invasive study to inform the ongoing management and development of the site. The aim of the survey was to identify subsurface remains across the site, particularly the location of any surviving archaeological remains and utilities. A hand-held fluxgate gradiometer survey (1.2ha) was conducted over accessible areas of the Parade Ground and was heavily influenced by the response to ferrous utilities, although anomalies due to possible ditches and fired brick have also been detected. The vehicle towed GPR survey (2.5ha), using a composite of previous instrument tests together with newly acquired data, covered the Parade Ground and accessible areas in the dry moat. In addition to both current and historic utilities the survey revealed the location of temporary military buildings known from aerial photography and the outer edge of the 1747 fort rampart and ditch.
- Report Number:
- 71/2023
- Series:
- Research Report
- Pages:
- 15
- Keywords:
- Fluxgate Geophysical Survey Ground Penetrating Radar Magnetometer
