EMFlips: a successor to EMFlow plus Local anomaly, IP and SPM fitting and correction

CD3D; Honorary Professor, RMIT, GLEN IRIS, Australia

Overview
In the 1990’s a fast, stitched 1D airborne electromagnetic solution, EMFlow, was developed in co-operative research centre CRCAMET with Australian Government and mining industry funding and commercialised by Encom. This software was invaluable for data visualisation, quality control and for ensuring that, for example, system waveform and data were consistent and calibrated. The stitched 1D solutions provided useful starting models for interpretation. With the demise of multi-operating-system XVT used for graphics in EMFlow, and computing hardware changes, EMFlow is no longer fully functional. Post EMFLow, Macnae developed in MATLAB enhancements that permit fitting of Induced Polarization and SPM effects to AEM data, as well as methodology for fitting local anomalies. This workshop will provide attendees with MATLAB and/or Python code to replicate the functionality and speed of EMFlow on inexpensive laptops, and in exercises detect the presence of excessive spatial filtering, fit and correct 1D data for Induced Polarization, SPM and local anomalies in the data. The IP & SPM responses subtracted for correction provide valuable regolith data that can be used in map form, and the local residual anomalies used as input into simple or full 2D and 3D inversion routines. The workshop will utilise some available codes to demonstrate these useful post-process outcomes based on the EMFlips software.

What are the learning outcomes?
Ability to QC and determine suitability of AEM data for modelling and inversion.

Who should attend?
Hands on users of airborne EM data.