Abstract

Technological advancement in magnetometers has resulted in the possibility of measuring the magnetic field with high accuracy; to add to this the improvement in the positioning of the aircrafts using GPS, compensation software / hardware for suppressing airplane noise and gradiometer measurements have led to a sea change in the kind of resolution that can be achieved in the study of aeromagnetic anomalies. This combined with the availability of sophisticated computers and data processing and imaging techniques has made it possible to identify and interpret the miniscule magnetic signatures associated with hydrocarbons. Further, there has been a global surge in geochemical studies to understand magnetic mineralogy, in particular those associated with hydrocarbon seepage and migration that could result in weak magnetic signatures. Thus a combination of recent developments in various fields has resulted in making the Magnetic Method