Australian Isostatic Residual Gravity Grids 2019

The 2019 Australian National Gravity Compilation project produced a set of isostatic residual gravity anomaly grids. These grids were generated by Intrepid Geophysics on behalf of Geoscience Australia, applying the Airy isostatic compensation model to the 2019 Complete Bouguer Anomaly grid using new elevation and seismic-derived Moho data. The dataset includes a benchmark isostatic residual grid and derivative products intended for geophysical analysis.

Use Cases

• Crustal structure modeling based on isostatic residual gravity anomalies.
• Mineral exploration targeting using regional gravity anomaly signatures.
• Geophysical research incorporating seismic-derived Moho depth data.
• Benchmarking new isostatic correction methodologies against the provided grid.

Strengths

• Represents a national-scale compilation produced by a government agency (Geoscience Australia).
• Methodology is explicitly described, utilizing the Airy isostatic model and seismic-derived Moho grids.
• Designed as a benchmark product for future geophysical work.

Limitations

• Key metadata such as spatial resolution, row/column counts, and license are not provided in the sources.
• The dataset's relationship to the 2016 project version is described but the exact differences are not detailed.
• Data format specifics beyond 'ZIP' are unknown.

Provenance

Source

Geoscience Australia, generated by Intrepid Geophysics.

Collection Method

Derived from the 2019 national Complete Bouguer Anomaly grid using digital terrain and seismic Moho models with Airy isostatic compensation.

Time Range

2019

Freshness

Last updated metadata indicates 2026-05-14.

Geography

Australia