From Geoscience Australia
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Merged Magnetic, Radiometric and Elevation Grids for the NTGS Tanami Region (Northern Territory)

Created 16/10/2025

Updated 16/10/2025

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Various gridded images were produced from the NTGS Tanami Region Airborne Magnetic and Radiometric Survey dataset and simultaneously merged into a single grid file. The final grid retains all of the information from the input data and is levelled to the national map compilations produced by Geoscience Australia.

The following merged grids are available in this download: • Laser-derived digital elevation model grids (m). Height relative to the Australian Height Datum. • Radar-derived digital elevation model grids (m). Height relative to the Australian Height Datum. • Total magnetic intensity grid (nT). • Total magnetic intensity grid with variable reduction to the pole applied (nT). • Total magnetic intensity grid with variable reduction to the pole and first vertical derivative applied (nT/m). • NASVD-filtered potassium concentration grid (%). • NASVD-filtered thorium concentration grid (ppm). • NASVD-filtered uranium concentration grid (ppm).

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Additional Info

Field Value
Title Merged Magnetic, Radiometric and Elevation Grids for the NTGS Tanami Region (Northern Territory)
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/dbb68ac2-1f75-499e-b84a-4bc130153d33
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 14/07/2018 - 29/11/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        129.0,
        -21.3
      ],
      [
        131.6,
        -21.3
      ],
      [
        131.6,
        -19.0
      ],
      [
        129.0,
        -19.0
      ],
      [
        129.0,
        -21.3
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Merged Magnetic, Radiometric and Elevation Grids for the NTGS Tanami Region (Northern Territory)". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/merged-magnetic-radiometric-and-elevation-grids-for-the-ntgs-tanami-region-northern-territory