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Probabilistic airborne electromagnetic inversion of 20 km AusAEM data, Phase 1

Created 16/10/2025

Updated 09/01/2026

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This airborne electromagnetic (AEM) dataset provides regional scale probabilistic inversion products from 141,000 line km of airborne electromagnetic (AEM) data from the AusAEM program.

The two main benefits of a probabilistic inversion over a deterministic one are:

  • Loss of signal sensitivity at depth does not “fade to blue” by returning to the resistive deterministic reference model.
  • Ambiguous subsurface features become clearer when examining multiple probability percentiles.

Further details are provided in the accompanying technical note.

Conductivity products from the following surveys are available:

  • Frome 2011
  • AusAEM 1 NT (2017)
  • AusAEM 1 QLD (2017)
  • AusAEM 2 Tranche 1 part (2019)
  • AusAEM 3 Eastern Resources Corridor (all 3 phases)
  • AusAEM 3 Western Resources Corridor (Kimberley, Central, Musgraves and South)

The 10th, 50th and 90th and mean percentiles of log10 conductivity are provided in a variety of formats:

  • VTK structured grids
  • ASCII point clouds
  • ASEG-GDF2 files
  • GOCAD S-grids

All products have been provided in the coordinate reference system (CRS) the original AEM data were provided in. The VTK unstructured grids are also provided in GDA94 geodetic longitude, latitude coordinates for ease of display in the same CRS.

Files and APIs

Tags

Additional Info

Field Value
Title Probabilistic airborne electromagnetic inversion of 20 km AusAEM data, Phase 1
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/2a154033-cabc-40f5-9170-56e1205f3108
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 25/03/2024 - 25/03/2024
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        112.0,
        -44.0
      ],
      [
        154.0,
        -44.0
      ],
      [
        154.0,
        -9.0
      ],
      [
        112.0,
        -9.0
      ],
      [
        112.0,
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      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Probabilistic airborne electromagnetic inversion of 20 km AusAEM data, Phase 1". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/probabilistic-airborne-electromagnetic-inversion-of-20-km-ausaem-data-phase-1