Estimation of depth to the bottom of magnetic sources(DBMS) using modified centroid method from aeromagnetic data of central India

Abstract

The estimation of the depth to the bottom of magnetic sources (DBMS) from the aeromagnetic data is always a challenge. The conventional centroid method of depth estimation from magnetic data assumes random uniform uncorrelated distribution of sources and to overcome this limitation a modified centroid method based on fractal distribution has been proposed. We applied this new method to the aeromagnetic data of the Indian region and selected 29 overlapping blocks of dimension 200 km by 200km covering different parts of the central India. Shallower values of DBMS are found for the western and southern portion. The depths to the bottom of magnetic sources correlate well with other geophysical results in the region.