Publication Name: AECG 2021
Authors: Gianluca Fiandaca
Date Published: September 2021
Number of Pages: 4
Abstract:
Data processing is a mandatory step before inversion for any geophysical inversion, because data outliers significantly affect the inversion process, often forbidding to reach reasonable inversion models and misfits. In the processing of Airborne Electromagnetic (AEM) data, the specificity consists in the necessity to cull out capacitive and galvanic coupled data, with the latter more difficult to recognize in data space alone. In this study I propose to use a generalization of the minimum support norm, namely the asymmetric generalized minimum support (AGMS) norm, for defining the data misfit in the objective function of an iterative reweighted least squared (IRLS) gauss-newton inversion.