Geophysical Survey at Land off Pershore Road, Upton Snodsbury

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. Hand Held: Data was collected using a Bartington Grad 601-2. The instrument consists of two paired sensors and readings are logged at 0.25m centres along traverses 1.0m apart across 30m grids. The collection of data at 0.25m centres provides an appropriate methodology balancing cost and time with resolution as per Historic England guidelines. Two 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. The magnetometer survey has not recorded any magnetic responses that could be interpreted as being of archaeological interest. Uncertain linear trends and discrete responses have been plotted in the survey which have probably been caused the limestone geology, agricultural processes or buried ferrous debris. The route of a small pipe has been detected in the north of Area 2 and modern ferrous disturbance is visible on the edges of the survey areas.