Authors / CoAuthors
Wong, S. | Nicoll, M. | Brodie, R. | Hope, J. | Bonnardot, M. | Roach, I. | LeyCooper, Y.
Abstract
<div>In response to the acquisition of national-scale airborne electromagnetic surveys and the development of a national depth estimates database, a new workflow has been established to interpret airborne electromagnetic conductivity sections. This workflow allows for high quantities of high quality interpretation-specific metadata to be attributed to each interpretation line or point. The conductivity sections are interpreted in 2D space, and are registered in 3D space using code developed at Geoscience Australia. This code also verifies stratigraphic unit information against the national Australian Stratigraphic Units Database, and extracts interpretation geometry and geological data, such as depth estimates compiled in the Estimates of Geological and Geophysical Surfaces database. Interpretations made using this workflow are spatially consistent and contain large amounts of useful stratigraphic unit information. These interpretations are made freely-accessible as 1) text files and 3D objects through an electronic catalogue, 2) as point data through a point database accessible via a data portal, and 3) available for 3D visualisation and interrogation through a 3D data portal. These precompetitive data support the construction of national 3D geological architecture models, including cover and basement surface models, and resource prospectivity models. These models are in turn used to inform academia, industry and governments on decision-making, land use, environmental management, hazard mapping, and resource exploration.</div>
Product Type
document
eCat Id
147251
Contact for the resource
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Digital Object Identifier
Keywords
- ( Project )
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- EFTF – Exploring for the Future
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- airborne electromagnetics
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- AEM
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- interpretation
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- workflow
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- mapping
- theme.ANZRC Fields of Research.rdf
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- Stratigraphy (incl. biostratigraphysequence stratigraphy and basin analysis)Electrical and electromagnetic methods in geophysicsGroundwater hydrologyResource geoscienceStructural geology and tectonicsDatabase systems
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- Published_External
Publication Date
2022-11-17T00:27:59
Creation Date
2022-09-25T14:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
This document describes the main steps in the multilayered airborne electromagnetic interpretation workflow.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
GA Record GA Record 2022/37
Lineage
<div>The airborne electromagnetic interpretation workflow described in this document shares some similarities to previous work at Geoscience Australia, involving the capture of section based interpretation with commonly available geographic information systems (GIS) software and existing skillsets. This technique has been applied to deep seismic reflection interpretation, magnetotelluric interpretation, geological cross sections and 2D models for forward modelling. </div>
Parent Information
Extents
[-44, -9, 112, 154]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - wasDerivedFrom
Canning Basin AusAEM interpretation: hydrogen storage potential and multilayered mapping
eCat Identifier - 146376,
UUID - 968b4ce2-7055-468c-95d4-cdda65cc5cb8
Association Type - wasGeneratedBy
AusAEM1 Interpretation Data Package
eCat Identifier - 145120,
UUID - 430acf3d-cdf6-4a78-abbc-d2f9eae5bf91
Association Type - wasDerivedFrom
Interpretation of the AusAEM1: insights from the world’s largest airborne electromagnetic survey
eCat Identifier - 134283,
UUID - 92b3093b-4000-4292-8065-3f146d1baae9
Source Information