Magnetic Methods

Syllabus: 
  • Elements of Earth’s magnetic field, units of measurement, magnetic susceptibility of rocks and measurements, 
  • Magnetometers and magnetic gradiometers, 
  • Land, airborne and marine magnetic and magnetic gradiometer surveys, 
  • Various corrections applied to magnetic data, IGRF, Reduction to Pole transformation, Poisson’s relation of gravity and magnetic potential field, preparation of magnetic maps, upward and downward continuation, 
  • magnetic anomalies due to geometrical and irregular shaped bodies; 
  • Image processing concepts in processing of magnetic anomaly maps; 
  • Depth rules; Interpretation of processed magnetic anomaly data; derivative, analytic signal and Euler Depth Solutions. 
  • Applications of gravity and magnetic methods for mineral and oil exploration. 
GATE questions