Peer-reviewed
Anomalous Magnetic Variations in Southwestern Scotland
Magnetic field variations have been recorded simultaneously at a number of stations in southern Scotland and northern Ireland. The record was obtained in digital form on paper tape, using three sets of three-component proton magnetometers. One magnetometer was kept at Eskdalemuir as a base station. At each station except Eskdalemuir and Glenlee, the relationship of the vertical field variations to the horizontal variations can be explained by the coast effect. But at Eskdalemuir, and at the neighbouring station of Glenlee, the vertical component of the field variation is much attenuated for variations with period less than an hour. This anomaly appears to indicate that Eskdalemuir lies over a region of high electrical conductivity, and therefore high temperature, within 100 km of the surface. Such a hot region could be a result of the volcanic activity which occurred in the area during Tertiary times
Article, 1968