Complete Bouguer Gravity Anomaly Image of Onshore Australia, 2016

A gravity anomaly image derived from approximately 1.39 million gravity station observations in the Australian National Gravity Database and a 2013 Riverina survey. The data was acquired by multiple government, industry, and research entities from the 1940s to 2016. The product is an image-enhanced, sun-shaded hue-saturation-intensity (HSI) representation of complete Bouguer anomalies.

Use Cases

• Model subsurface density variations based on the complete Bouguer anomaly data.
• Identify geological structures and basins for resource exploration using the terrain-corrected gravity image.
• Integrate gravity data with other geophysical surveys for regional geological interpretation.
• Study long-term changes in gravity measurements based on data collected from the 1940s onward.

Strengths

• Derived from a large base of approximately 1.8 million gravity observations, specifically using 1,371,998 stations from the national database.
• Incorporates data from a dedicated 2013 survey (19,558 stations) for the Riverina region.
• Applies terrain corrections using both offshore bathymetry and onshore topography data.
• Aggregates data from multiple sources including Commonwealth, State, and Territory Governments, industry, and universities over a long period.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is presented as a processed image (PDF, ZIP), not the raw point observations, limiting direct numerical analysis.
• Last updated 2026-06-05 05:52:49.178672; freshness should be verified.

Provenance

Source

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

Collection Method

Observations aggregated from government, industry, and academic surveys.

Time Range

1940s to 2016

Freshness

Data current as of February 2016; metadata updated June 2026.

Geography

Onshore continental Australia