SOME ASPECTS IN INVERSION OF POTENTIAL-FIELD DATA - A DAMPED APPROXIMATE INVERSE APPROACH

The mathematical details and underlying principles for the damped appr oximate inversion technique are briefly discussed. The damping factors and relative threshold are optimally selected so that a maximum of us eful information is utilised in retrieving the model parameters. This technique is tested for synthetically generated data across a two-dime nsional hexagonal body for the initial parameters off by -10% to 25% o f the true parameters, number of comers and mixed variants. The degree of uniqueness in resolving the parameters is studied from the resolut ion matrix, eigenvalues, damping factors and V-matrix. Two field examp les, a Bouguer gravity anomaly profile from the Banovce basin and a to tal intensity magnetic anomaly profile from the Bijawar basin, demonst rate the effectiveness of the scheme.