Estimating the geomagnetic secular change at Mawson, Antarctica. Home> Scientific research> Publications> Other> Estimating the geomagnetic secular change at Mawson, Antarctica. Summary Authors:McGregor P.M. Published in: 1979 Category 3: Article Program area: Geosciences McGregor P.M. (1979) Estimating the geomagnetic secular change at Mawson, Antarctica, BMR Record 1979/46. 5pp; This content was last updated 8 months ago on 20 February 2026.