Constrained inversion of IP parameters from Airborne EM data

Abstract

The possibility of extracting IP information from AEM data never stopped being of interest to the scientific community and industry. Synthetic studies on AEM data (SkyTEM and VTEM) for simple Cole Cole models over layered earth confirm that some of the Cole cole parameters can, in favourable conditions, be recovered from AEM data. They also provide useful insight into different ranges/combinations of resolvable parameters. The best results are obtained with high resistivity moderate to high chargeabilities, and higher S/N ratio of the AEM system. We then apply to real data the proven approach of the Laterally and Spatially Constrained Inversion. Preliminary results show that, as expected, in some cases, some of the Cole Cole parameters can be resolved from actual AEM data.