Complete Bouguer Gravity Anomaly Grid for Onshore Australia 2016

Australia's onshore gravity anomaly grid derived from 1,391,556 gravity station observations. The dataset integrates national and regional survey data, applying terrain corrections using bathymetry and topography.

Use Cases

• Analyze complete Bouguer anomaly values to model subsurface geological structures.
• Apply terrain correction data to refine gravity interpretations for mineral exploration.
• Use the grid's spatial coverage to study regional geophysical trends across onshore Australia.
• Integrate the 2016 grid with other geophysical datasets for continental-scale resource assessment.

Strengths

• Derived from a substantial base of 1,391,556 gravity station observations.
• Incorporates data from multiple sources including a 2013 regional survey for enhanced coverage.
• Applies terrain corrections calculated from both offshore bathymetry and onshore topography.

Limitations

• The core observational data is from 2016, potentially lacking recent surveys.
• As a processed grid, original station-level metadata and raw measurements are not directly accessible.
• The 'completeness' of the Bouguer correction is model-dependent and may vary with terrain data quality.

Provenance

Source

Australian National Gravity Database and the 2013 New South Wales Riverina gravity survey.

Collection Method

Grid generated from gravity observations, with terrain corrections applied to spherical cap Bouguer anomalies.

Time Range

Observations collected from the 1940s to February 2016.

Freshness

Grid processed in 2016; metadata record updated March 2026.

Geography

Onshore continental Australia.