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Nearly 1.4 million gravity stations from the Australian National Gravity Database were used to generate this spherical cap Bouguer anomaly grid. The processed data, checked for quality by GA geophysicists, measures small changes in gravity due to subsurface rock density. This 2019 compilation combines ground observations with offshore data from Scripps Institution of Oceanography, NOAA, and NGA.
Data is provided in NetCDF format (APPLICATION/X-NETCDF), which requires compatible software for analysis.