Magnetic Mapping of Slovakia for the Epoch 1980.5

Abstract

130 sites were occupied in a magnetic survey of Slovakia. About half of those occupied in previous surveys (1952.5, 1958.5, and 1967.5) were unsuitable because of increased man made noises. New stations were substituted. A combination of classical magnetometers (for H and D) and a proton magnetometer (for F) was used. Z was computed from H and F. Instruments were calibrated at Hurbanovo magnetic observatory before the survey and at regular size intervals during it.

Reduction to epoch was made on the assumption that the scale variation is everywhere the same and equal to that at Hurbanovo. Preliminary maps are hand drawn, but the data have been transferred to computer tape and computer plotted maps are being prepared.