Complete Bouguer Gravity Anomaly Grid of Onshore Australia, 2016

Geoscience Australia Data provides a gravity anomaly grid derived from approximately 1.39 million gravity station observations. The data incorporates measurements from the Australian National Gravity Database and a 2013 Riverina survey, collected by government, industry, and research bodies from the 1940s onward. Terrain corrections were applied using offshore bathymetry and onshore topography data.

Use Cases

• Modeling subsurface density variations based on complete Bouguer anomaly values.
• Integrating gravity data with other geophysical surveys for regional geological interpretation.
• Assessing terrain correction methodologies using the described bathymetry and topography data.

Strengths

• Derived from a substantial base of approximately 1.39 million gravity station observations.
• Incorporates data from multiple sources including a dedicated 2013 survey, suggesting consolidation efforts.
• Applies terrain corrections using both offshore and onshore elevation data, which likely improves accuracy.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic or temporal bias inherent to the aggregated government and industry sources.

Provenance

Source

Geoscience Australia Data, incorporating the Australian National Gravity Database and state/territory governments.

Collection Method

Grid generated from gravity observations and survey data, with applied terrain corrections.

Time Range

Observations from the 1940s to February 2016.

Freshness

Last updated 2026-04-20 03:46:27.389806; freshness should be verified.

Geography

Onshore continental Australia.