A temporary grid system was established over the site and marked out using canes. The location of the grid was set out using an RTK GPS system theoretically accurate to some 0.01m and referenced to OS co-ordinates. Data was collected using a cart carrying four paired Bartington magnetic sensors. Four sensors mounted 1m horizontally apart and very accurately aligned to nullify the effects of the earth's magnetic field. Readings relate to the difference in localised magnetic anomalies compared with the general magnetic background. Each data point is geographically referenced using an on-board Trimble RTK survey grade GPS system. Readings were taken at 0.125m centres along traverses 1.0m apart. Readings relate to the difference in localised magnetic anomalies compared with the general magnetic background. The magnetometer survey has recorded magnetic responses that have been interpreted as being of possible archaeological interest including three potential enclosures and associated features. Numerous uncertain anomalies have also been plotted in the survey. While archaeological origins cannot be entirely discounted, most of them are probably due to agricultural or natural processes. Several field boundaries and land drains have also been plotted in the survey. Sinuous bands of amorphous response in Area 2 have been caused by natural variations. A modern trackway is also visible in Area 2.
Thomas Cockcroft (Mon,) studied this question.