Site 210 - Geophysics Survey Report - Heritage Non-intrusive Survey Reports Group 002

The survey was undertaken using four Bartington Grad601 sensors mounted at 1m intervals (1m traverse interval) onto a rigid carrying frame. The system was programmed to take readings at a frequency of 10Hz (allowing for a 10-15cm sample interval) on roaming traverses (swaths) 4m apart. These readings were stored on an external weatherproof laptop and later downloaded for processing and interpretation. The system was linked to a Trimble R8s Real Time Kinetic (RTK) differential Global Positioning System (dGPS) outputting in NMEA mode to ensure a high positional accuracy for each data point, in accordance with EAC guidelines (EAC 2016). Survey at Site 210 has not identified any anomalies of definite or possible archaeological origin except for faint traces ridge and furrow identified in the western parcel of the Site. Areas of magnetic disturbance at field boundaries are caused by fences or accumulation of debris in the boundary itself. Faint linear trend anomalies identify agricultural ploughing patterns in the easternmost parcel. The findings of the survey are consistent with the known limited archaeological potential of the site and broader geographical area covering Group 005.