Probabilistic airborne electromagnetic inversion of 20 km AusAEM data, North East Queensla

35,000 line kilometers of airborne electromagnetic (AEM) data from the 2024 Northeast Queensland AusAEM survey were inverted using the open-source HiQGA code. The dataset provides probabilistic inversion products, including the 10th, 50th, 90th, and mean percentiles of log10 conductivity, released under the Resourcing Australia's Prosperity initiative. Products are available in multiple formats including VTK structured grids, ASCII point clouds, ASEG-GDF2 files, and GOCAD S-grids.

Use Cases

• Quick scanning for conductive mineral deposits based on the 10th percentile of log10 conductivity.
• Identifying resistive geological features based on the 90th percentile of log10 conductivity.
• Minimizing survey join artefacts for seamless geological interpretation across regional lines.
• Enhancing confidence in fine subsurface features by examining multiple probability percentiles.

Strengths

• Covers 35,000 line kilometers of airborne electromagnetic data.
• Provides probabilistic inversion products (10th, 50th, 90th, mean percentiles) to mitigate depth sensitivity loss.
• Data is available in multiple standard geophysical formats (VTK, ASCII, ASEG-GDF2, GOCAD).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Georeferenced images are not guaranteed to render with the correct orientation.

Provenance

Source

Geoscience Australia Data

Collection Method

Airborne electromagnetic survey data inverted using the open-source HiQGA (High Quality Geophysical Analysis) code.

Time Range

Survey conducted in 2024; products released in 2025.

Freshness

Last updated 2026-06-24 08:03:46.231949; freshness should be verified.

Geography

North East Queensland, Australia.