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HiQGA: High Quality Geophysical Analysis

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Created 13/01/2025

Updated 13/01/2025

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From being a poorly understood qualitative mapping tool, airborne electromagnetic (AEM) geophysics has become a mainstay for rapidly imaging the top few hundred metres of buried earth for a variety of geoscientific and environmental purposes. In this talk, we will detail GA’s quest to provide high quality, quantitative interpretation of AEM sounding data. Beginning with a 20-year historical perspective, we will shed light on how persistent focus on AEM technology directly led to AusAEM, the world’s largest (ongoing) AEM survey. We will then discuss how continuing focus on AEM has led to the development of an open source framework written in the Julia language, for subsurface imaging AND uncertainty quantification. This codebase is useful for geophysical methods beyond AEM, such as magnetotellurics and magnetic resonance. Finally, we will dwell on some real life examples using the new codebase and will look to the future of AEM@GA and its untapped potential.

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Title HiQGA: High Quality Geophysical Analysis
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/0de6a82c-ee32-4490-8558-b7faf0627f50
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 08/04/2019
Geospatial Coverage
Map data © OpenStreetMap contributors
Data Portal Data.gov.au