a8102e47-3ad7-4abe-830a-a0f22cc28c67 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T12:36:35 creation ISO 19115 2016 Tanami MainNS - Th equivalent concentration grid (AWAGS) a8102e47-3ad7-4abe-830a-a0f22cc28c67 The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). 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 radiometric thorium grid has a cell size of 0.00036 degrees (approximately 40m) and shows thorium element concentration of the NTGS Tanami NS Detailed Airborne Magnetic Radiometric and Digital Elevation Survey, NT, 2018 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2018 by the NT Government, and consisted of 145230 line-kilometres of data at 200m line spacing and 60m terrain clearance. To constrain long wavelengths in the grid, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey grid. {"type": "Polygon", "coordinates": [[[128.9876, -21.2567], [131.5362, -21.2567], [131.5362, -20.1797], [128.9876, -20.1797], [128.9876, -21.2567]]]} 128.9876 131.5362 -21.2567 -20.1797 AWAGS Australia EARTH SCIENCES Earth sciences GADDS2.0 NCI NT Published_External Th airborne digital data gamma-ray geophysical survey geophysics grid rad radiometrics raster spectrometry survey 1312 thorium 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 Tanami MainNS - Th equivalent concentration grid (AWAGS) file download documentDigital File download for Tanami MainNS - Th equivalent concentration grid (AWAGS) application/x-netcdf Tanami MainNS - Th equivalent concentration grid (AWAGS) NCSS documentDigital NetCDF Subsetting Service (NCSS) for Tanami MainNS - Th equivalent concentration grid (AWAGS) HTML Tanami MainNS - Th equivalent concentration grid (AWAGS) OPeNDAP documentDigital OPeNDAP web service for Tanami MainNS - Th equivalent concentration grid (AWAGS) HTML Tanami MainNS - Th equivalent concentration grid (AWAGS) WMS documentDigital OGC Web Mapping Service (WMS) for Tanami MainNS - Th equivalent concentration grid (AWAGS) WMS Tanami MainNS - Th equivalent concentration grid (AWAGS) WCS documentDigital OGC Web Coverage Service (WCS) for Tanami MainNS - Th equivalent concentration grid (AWAGS) WCS