@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix gsp: . @prefix locn: . @prefix xsd: . a dcat:Dataset ; dct:description """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 includes airborne tilt grid is derived from the 2019 Australian National Gravity Grids B series. These gravity data were acquired under the project No. 202008. The grid has a cell size of 0.00417 degrees (approximately 435m). This gravity anomaly grid is derived from ground observations stored in the Australian National Gravity Database (ANGD) as at September 2019, supplemented with offshore data sourced from v28.1 of the Global Gravity grid developed using data from the Scripps Institution of Oceanography, the National Oceanic and Atmospheric Administration (NOAA), and National Geospatial-Intelligence Agency (NGA) at Scripps Institution of Oceanography, University of California San Diego. Airborne gravity and gravity gradiometry data were also included to provide better resolution to areas where ground gravity data was not of a suitable quality. Out of the approximately 1.8 million gravity observations, nearly 1.4 million gravity stations in the ANGD together with Airborne Gravity surveys totalling 345,000 line km and 106,000 line km of Airborne Gravity Gradiometry were used to generate this grid. The ground gravity data used in this grid has been acquired by the Commonwealth, State and Territory Governments, the mining and exploration industry, universities and research organisations from the 1940's to the present day. Station spacing varies from approximately 11 km down to less than 1 km, with major parts of the continent having station spacing between 2.5 and 7 km. Airborne surveys have a line spacing ranging from 0.5 km to 2.5 km. Terrain corrections to gravity were calculated using both offshore bathymetry and onshore topography data. The grid shows the tilt filter of the complete Bouguer anomalies (B series) over Australia and its continental margins.""" ; dct:identifier "d79dba45-1cdb-4385-99f7-7fe15348100a" ; dct:issued "2026-04-04T06:16:18.926180"^^xsd:dateTime ; dct:language "eng" ; dct:modified "2026-04-04T06:16:18.926188"^^xsd:dateTime ; dct:publisher ; dct:spatial [ a dct:Location ; locn:geometry "POLYGON ((107.9979 -48.0021, 164.0021 -48.0021, 164.0021 -7.9979, 107.9979 -7.9979, 107.9979 -48.0021))"^^gsp:wktLiteral ] ; dct:title "National Gravity Compilation 2019 includes airborne tilt grid" ; dcat:distribution , , , , , ; dcat:keyword "Australia", "B series", "Bouguer", "EARTH SCIENCES", "Earth sciences", "GADDS2.0", "NCI", "None", "Published_External", "airborne", "complete", "digital data", "geophysical survey", "geophysics", "gradiometry", "grav", "gravity", "grid", "marine", "raster", "round", "satellite", "spherical cap", "survey 202008", "tilt" . a dcat:Distribution ; dct:description "NetCDF Subsetting Service (NCSS) for National Gravity Compilation 2019 includes airborne tilt grid" ; dct:format "HTML" ; dct:issued "2026-04-04T06:16:18.928026"^^xsd:dateTime ; dct:modified "2026-04-04T06:16:18.893734"^^xsd:dateTime ; dct:title "National Gravity Compilation 2019 includes airborne tilt grid NCSS" ; dcat:accessURL . a dcat:Distribution ; dct:description "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." ; dct:format "HTML" ; dct:issued "2026-04-04T06:16:18.928015"^^xsd:dateTime ; dct:modified "2026-04-04T06:16:18.893533"^^xsd:dateTime ; dct:title "File available for download in various formats from the GADDS2 portal" ; dcat:accessURL . a dcat:Distribution ; dct:description "File download for National Gravity Compilation 2019 includes airborne tilt grid" ; dct:issued "2026-04-04T06:16:18.928023"^^xsd:dateTime ; dct:modified "2026-04-04T06:16:18.893648"^^xsd:dateTime ; dct:title "National Gravity Compilation 2019 includes airborne tilt grid file download" ; dcat:accessURL ; dcat:mediaType "application/x-netcdf" . a dcat:Distribution ; dct:description "OPeNDAP web service for National Gravity Compilation 2019 includes airborne tilt grid" ; dct:format "HTML" ; dct:issued "2026-04-04T06:16:18.928030"^^xsd:dateTime ; dct:modified "2026-04-04T06:16:18.893814"^^xsd:dateTime ; dct:title "National Gravity Compilation 2019 includes airborne tilt grid OPeNDAP" ; dcat:accessURL . a dcat:Distribution ; dct:description "OGC Web Mapping Service (WMS) for National Gravity Compilation 2019 includes airborne tilt grid" ; dct:format "WMS" ; dct:issued "2026-04-04T06:16:18.928034"^^xsd:dateTime ; dct:modified "2026-04-04T06:16:18.893892"^^xsd:dateTime ; dct:title "National Gravity Compilation 2019 includes airborne tilt grid WMS" ; dcat:accessURL . a dcat:Distribution ; dct:description "OGC Web Coverage Service (WCS) for National Gravity Compilation 2019 includes airborne tilt grid" ; dct:format "WCS" ; dct:issued "2026-04-04T06:16:18.928037"^^xsd:dateTime ; dct:modified "2026-04-04T06:16:18.893969"^^xsd:dateTime ; dct:title "National Gravity Compilation 2019 includes airborne tilt grid WCS" ; dcat:accessURL . a foaf:Agent ; foaf:mbox "info@aodn.org.au" ; foaf:name "Australian Ocean Data Network" .