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Nearly 1.8 million gravity observations, including 1.4 million ground stations and 451,000 line kilometers of airborne data, were used to create this 2019 national grid. Geoscience Australia compiled and quality-checked data from government, industry, and research sources dating from the 1940s to produce this image. The grid shows the half vertical derivative of de-trended global isostatic residual anomalies across Australia and its continental margins at a cell size of approximately 435 meters.
Primary file format is APPLICATION/X-NETCDF, which requires specific geospatial software or libraries for analysis.