16e91ff6-5589-4a33-9220-1e7e6d1bf206 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2026-04-04T07:55:07 creation ISO 19115 2016 National Gravity Compilation 2019 (CSCBA 1VD grid) 16e91ff6-5589-4a33-9220-1e7e6d1bf206 Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This National Gravity Compilation 2019 (CSCBA 1VD grid) is the first vertical derivative of the complete spherical cap Bouguer anomaly grid for the 2019 Australian National Gravity Grids A series. This gravity survey was acquired under the project No. 202008. The grid has a cell size of 0.00417 degrees (approximately 435m). A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid. {"type": "Polygon", "coordinates": [[[107.9979, -48.0021], [164.0021, -48.0021], [164.0021, -7.9979], [107.9979, -7.9979], [107.9979, -48.0021]]]} 107.9979 164.0021 -48.0021 -7.9979 1VD Australia Bouguer EARTH SCIENCES Earth sciences GADDS2.0 NCI None Published_External complete first vertical derivative geophysical survey geophysics grav gravity grid ground digital data raster spherical cap survey 202008 File available for download in various formats from the GADDS2 portal documentDigital The Geophysical Archive Data Delivery System (GADDS2) portal provides HTTP download of geophysics datasets in a number of formats. Point and line datasets are available in NetCDF and ASEG-GDF2. Grid datasets are available in NetCDF, GeoTIFF and ERS. HTML /g/data/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/national_geophysical_compilations/Gravmap2019/Gravmap2019-grid-grv_cscba_1vd.nc file at NCI documentDigital Fully qualified pathname of NetCDF file on NCI filesystem for National Gravity Compilation 2019 (CSCBA 1VD grid). Users must be logged onto the NCI network to access this file system. application/x-netcdf /g/data/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/national_geophysical_compilations/Gravmap2019/Gravmap2019-grid-grv_cscba_1vd.nc file download documentDigital File download for National Gravity Compilation 2019 (CSCBA 1VD grid) application/x-netcdf