Authors / CoAuthors
Ray, A. | Taylor, R. | Symington, N. | Brodie, R. | LeyCooper, Y. | Moghaddam, N.
Abstract
The High Quality Geophysical Analysis (HiQGA) package is a fully-featured, Julia-language based open source framework for geophysical forward modelling, Bayesian inference, and deterministic imaging. A primary focus of the code is production inversion of airborne electromagnetic (AEM) data from a variety of acquisition systems. Adding custom AEM systems is simple using Julia’s multiple dispatch feature. For probabilistic spatial inference from geophysical data, only a misfit function needs to be supplied to the inference engine. For deterministic inversion, a linearisation of the forward operator (i.e., Jacobian) is also required. HiQGA is natively parallel, and inversions from a full day of production AEM acquisition can be inverted on thousands of CPUs within a few hours. This allows for quick assessment of the quality of the acquisition, and provides geological interpreters preliminary subsurface images of EM conductivity together with associated uncertainties. HiQGA inference is generic by design – allowing for the analysis of diverse geophysical data. Surface magnetic resonance (SMR) geophysics for subsurface water-content estimation is available as a HiQGA plugin through the SMRPInversion (SMR probabilistic inversion) wrapper. The results from AEM and/or SMR inversions are used to create images of the subsurface, which lead to the creation of geological models for a range of applications. These applications range from natural resource exploration to its management and conservation.
Product Type
document
eCat Id
147849
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
- Contact instructions
- MEG
Resource provider
Digital Object Identifier
Keywords
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCESCOMPUTER SOFTWARE
- ( Project )
-
- EFTF - Exploring for the Future
- ( Project )
-
- Australia's Resources Framework
-
- Geophysical
-
- Published_External
Publication Date
2023-08-14T23:26:57
Creation Date
Security Constraints
Legal Constraints
Status
completed
Purpose
EFTF Extended Abstract
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
This publication was produced as part of Geoscience Australia's Exploring for the Future Program. It was presented at the Exploring for the Future 2023 Showcase.
Parent Information
Extents
[-44.00, -9.00, 112.00, 154.00]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - crossReference
High-quality geophysical analysis (HiQGA)
eCat Identifier - 146699,
UUID - 960f4349-cb02-40ac-bf5a-7b8a73297143
Association Type - crossReference
An open source modelling and Bayesian inversion package for surface magnetic resonance data
eCat Identifier - 147042,
UUID - 6ed7f89b-fce7-4c93-bbd7-7712adf6bfde
Association Type - crossReference
Exploring for the Future AEM workshop: Perth, 2022
eCat Identifier - 147427,
UUID - 27e3d964-9286-4ced-8446-7f290505c00e
Source Information