National Gravity Compilation 2019 Tilt Grid for Australia at 435m Resolution

The 2019 National Gravity Compilation tilt grid integrates ground observations from the 1940s to 2019 with offshore data. It contains nearly 1.4 million gravity stations from the Australian National Gravity Database, processed with terrain corrections and a tilt filter. The grid has a cell size of 0.00417 degrees (approximately 435m) and covers Australia and its continental margins.

Use Cases

• Modeling subsurface geological structures based on gravity anomaly data.
• Mapping continental margins and offshore geology based on integrated land and marine data.
• Conducting mineral and resource exploration based on inferred density variations in the crust.

Strengths

• Integrates approximately 1.8 million gravity observations from a long time range (1940s to 2019).
• Uses nearly 1.4 million quality-checked stations from the national database.
• Applies terrain corrections using both offshore bathymetry and onshore topography.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian National Gravity Database (ANGD) and Global Gravity grid v28.1 from Scripps Institution of Oceanography, NOAA, and NGA.

Collection Method

Ground and marine gravity data acquired by government, industry, and research organizations, processed with standard methods and a tilt filter.

Time Range

1940s to September 2019

Freshness

Last updated 2026-04-28 13:46:12.605724; freshness should be verified

Geography

Australia and its continental margins