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Description
Approximately 1.8 million gravity observations underpin this 2019 compilation grid of Australia and offshore areas. The dataset integrates nearly 1.4 million ground stations, 345,000 line km of airborne gravity, and 106,000 line km of airborne gravity gradiometry, processed to a 435-meter cell size. It reveals subsurface geological structures by measuring density variations in rocks.
Use Cases
Mapping subsurface geological structures based on gravity anomalies.
Mineral and resource exploration targeting using density contrasts.
Integrating gravity data with other geophysical surveys for regional geological models.
Studying isostatic compensation and crustal thickness variations.
Strengths
Integrates a large volume of data: approximately 1.8 million observations from ground and airborne sources.
Combines multiple data types: ground stations, airborne gravity, and airborne gravity gradiometry for improved resolution.
Has a long temporal coverage, incorporating data acquired from the 1940s to 2019.
Quality is checked by GA (Geoscience Australia) geophysicists to be fit-for-purpose.
Limitations
Specific column names and data schema are not provided in the available metadata.
License information is not explicitly stated in the provided sources.
The exact file size and row count for the grid are not specified.
Provenance
Source
Australian National Gravity Database (ANGD), Global Gravity grid v28.1 (Scripps Institution of Oceanography/NOAA/NGA), and various government, industry, and research surveys.
Collection Method
Standard geophysical processing of ground and airborne gravity measurements, gridded to a uniform cell size.
Time Range
1940s to September 2019
Freshness
Last updated on 2026-06-17 according to the most recent platform entry.
Geography
Australia and surrounding offshore areas
Data is served via WCS and WMS web services and in NetCDF format. License details are not provided in the input.