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 (Figure 1). 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). Unenclosed areas were surveyed using the co-ordinates of the pre-determined Site boundary visible as an outline on the MLGrad601 software during data collection. MLGrad601 (Geomar Software Inc.) software was used to collect the data. The survey has not identified any anomalies of archaeological or possible archaeological potential which may relate to medieval settlement activity identified from aerial imagery and potentially GPR data to the west of the railway associated with the DMV of Godwynesleigh. The findings of the survey are limited to linear trend anomalies identifying drains or agricultural trends and areas of magnetic disturbance at field boundaries caused by ferrous fencing. The survey has not identified any anomalies of archaeological or possible archaeological potential which may relate to medieval settlement activity identified from aerial imagery and potentially GPR data to the west of the railway associated with the DMV of Godwynesleigh. The findings of the survey are limited to linear trend anomalies identifying drains or agricultural trends and areas of magnetic disturbance at field boundaries caused by ferrous fencing.
Matt Berry (Sat,) studied this question.