National Gravity Compilation 2019 (CSCBA): Australian Subsurface Gravity Grid

National Gravity Compilation 2019 (CSCBA) is a spherical cap Bouguer anomaly grid for Australia. The grid is derived from nearly 1.4 million ground gravity stations from the Australian National Gravity Database and offshore data from Scripps Institution of Oceanography. It has a cell size of approximately 435 meters (0.00417 degrees) and data are provided in units of micro-meters per second squared.

Use Cases

• Modeling subsurface geological structure based on Bouguer gravity anomaly data.
• Mineral and resource exploration targeting based on density contrasts revealed by gravity data.
• Integrating gravity data with other geophysical datasets for regional geological interpretation.
• Calibrating and validating satellite-derived gravity models with ground-based observations.

Strengths

• Derived from nearly 1.4 million quality-checked ground gravity stations.
• Grid cell size of approximately 435 meters provides regional-scale detail.
• Incorporates offshore data from a v28.1 global gravity grid.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-06-23 03:57:20.829049; freshness should be verified.

Provenance

Source

Australian National Gravity Database (ANGD) and Scripps Institution of Oceanography/NOAA/NGA global grid.

Collection Method

Ground observations processed via standard methods and quality-checked by GA geophysicists.

Time Range

Observations current as of September 2019.

Freshness

Data reflects observations as of September 2019; metadata was last updated in June 2026.

Geography

Australia, including offshore areas.