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 not recorded any magnetic responses that could be interpreted as being of definite archaeological interest. Anomalies of uncertain origin have been detected which have probably been caused by variations in the underlying geology and agricultural processes, or possibly because of unmapped quarry pits. Former field boundaries are visible across the site along with ferrous responses caused by current fences and an infilled chalk quarry / gravel pit marked on OS maps. Throughout the survey, sinuous trends, amorphous discrete anomalies and zones of increased response have been detected which have been caused by variations in the underlying geology. The route of a service pipe has also been marked.
Thomas Cockcroft (Wed,) studied this question.