Probabilistic Airborne Electromagnetic Inversion of 140,000 km AusAEM Data

Phase 2 of the AusAEM program provides probabilistic inversion products from 140,000 line kilometers of airborne electromagnetic data. The data were processed using the open-source HiQGA code as part of the Resourcing Australia's Prosperity initiative. Products include conductivity percentiles across multiple Australian survey regions.

Use Cases

• Assessing subsurface conductivity uncertainty based on multiple probability percentiles.
• Mapping regional geological features across Western Australia based on the listed survey areas.
• Comparing probabilistic and deterministic inversion results for AEM data interpretation.
• Visualizing 3D geophysical models using the provided VTK structured grids or GOCAD S-grids.

Strengths

• Covers 140,000 line kilometers of airborne electromagnetic data.
• Includes data from seven distinct survey areas across Australia.
• Provides multiple output formats including VTK grids, ASCII point clouds, ASEG-GDF2, and GOCAD S-grids.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Airborne electromagnetic surveys processed with probabilistic inversion using open-source HiQGA code.

Freshness

Last updated 2026-06-24 04:30:38.370607; freshness should be verified.

Geography

Australia, including specific regions in Western Australia such as Earaheedy Desert, Yilgarn, Eastern Goldfields, SW Albany, and Murchison.