Site 188 - Geophysics Survey Report Heritage Non-intrusive Survey Reports Group 009

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). EEW Group 009 falls within a Recognised Archaeological Zone (RAZ), specifically RAZ 18. This is defined as containing evidence of the north portion of a deserted medieval village at Marston. The survey has not identified any anomalies of definite or possible archaeological origin. The only recognizable anomalies in the data are faint linear agricultural trends and areas of magnetic disturbance at the field boundaries. No magnetic anomalies have been recorded which may relate to the nearby DMV at Marston located close to the junction of Marston Lane and Yarlet Lane.