A generalized source-distance semi-automatic interpretation method for potential field data

Source-distance methods can be used to locate the position and depth of potential field sources. Existing analytic signal amplitude-based methods are generalized here so that they are more flexible in the orders of analytic signal amplitude that they use. This not only gives benefits with respect to their robustness against noise and interference, but if the methods are applied several times using different orders then the repeatability of the results can be used to assess their reliability. Some of the proposed methods require the structural index of the source to be specified, whereas others do not. The methods are compared with the Euler deconvolution and Tilt-Euler methods and are demonstrated on synthetic data and on aeromagnetic data from South Africa.