Migration of the dip equator in the Indian region

Abstract

The position of the dip equator (DE) is worked out in the Indian region based on fairly close geomagnetic measurements nmde during a survey in the year 1981. The DE is located about 24 km south of its 1971 position along the 77.5°E meridian. Also, the DE positions for the epochs 1971 and 1981 show closeness on the east coast of India when compared to its west coast positions. The DE positions inferred from the repeat observations since 1909 are used for estimating the pattern of migration and the results are discussed.