Automated interpretation of horizontal magnetic gradient profile data

Abstract

Abstract A new technique has been developed to estimate the vertical magnetic gradient (G z ) along a profile from measurements of the two orthogonal horizontal magnetic gradients (G x and G y ). In addition, a means of identifying two-dimensional anomaly sources and the angle of the structure relative to the profile direction is shown to be a function of theta = arctan (-G y /G x ). This angle can be used to correct interpretations from vertical gradient or total field inversion methods which assume source structures oriented perpendicular to the profile direction.A modified Werner deconvolution algorithm for vertical gradient data incorporating these features has been applied to both real and simulated horizontal gradient data.