Potential Methods - Gravity Method

Syllabus:

  • Scalar and vector potential fields; 
  • Laplace, Maxwell and Helmholtz equations for solution of different types of boundary value problems in Cartesian, cylindrical and spherical polar coordinates; Green’s theorem; Image theory; integral equations in potential and timevarying field theory.

Gravity Methods
  • Absolute and relative gravity measurements; 
  • Gravimeters; 
  • Land, airborne, shipborne and bore-hole gravity surveys; 
  • Tensorial Gravity sensors and surveys; 
  • Corrections for gravity data reduction - free air, Bouguer and isostatic anomalies
  • density estimates of rocks; 
  • regional and residual gravity separation; 
  • principle of equivalent stratum; 
  • data enhancement techniques, upward and downward continuation; derivative maps, wavelength filtering; preparation and analysis of gravity maps; 
  • gravity anomalies and their interpretation – anomalies due to geometrical and irregular shaped bodies, depth rules, calculation of mass
GATE questions: