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Gawler Craton Airborne Survey Merge Radiometrics - dose rate grid (AWAGS)

Created 16/10/2025

Updated 16/10/2025

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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. The total dose rate is due to natural sources of radiation and is computed by adding estimates of cosmic dose at ground level to the terrestrial dose. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered total dose rate grid. This Gawler Craton Airborne Survey Merge Radiometrics - dose rate grid (AWAGS) has a cell size of 0.0004 degrees (approximately 41m) and shows the total dose rate of the Gawler Craton Airborne Survey Magnetic Radiometric and DEM Merge, SA, 2017-2019 survey. The data used to produce this grid was acquired in 2019 by the SA Government, and consisted of 1660000 line-kilometres of data at 200m line spacing and 60m terrain clearance.

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Field Value
Title Gawler Craton Airborne Survey Merge Radiometrics - dose rate grid (AWAGS)
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/81e4c3eb-6f25-4dfb-811b-7e6446f903f6
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 01/01/2019 - 01/01/2019
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        130.9895,
        -32.6744
      ],
      [
        138.0596,
        -32.6744
      ],
      [
        138.0596,
        -27.3241
      ],
      [
        130.9895,
        -27.3241
      ],
      [
        130.9895,
        -32.6744
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Gawler Craton Airborne Survey Merge Radiometrics - dose rate grid (AWAGS)". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/gawler-craton-airborne-survey-merge-radiometrics-dose-rate-grid-awags