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NT Tiwi Islands Doserate Grid Geodetic

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 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 terrestrial dose rate grid. This NT Tiwi Islands Doserate Grid Geodetic has a cell size of 0.00083 degrees (approximately 92m) and shows the terrestrial dose rate of the Tiwi Islands, NT, 2006. The data used to produce this grid was acquired in 2006 by the NT Government, and consisted of 30001 line-kilometres of data at 400m line spacing and 80m terrain clearance.

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Additional Info

Field Value
Title NT Tiwi Islands Doserate Grid Geodetic
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/4d98e7bb-19ca-4ad8-a1a7-6c7aad6a20c1
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 09/10/2006 - 18/11/2006
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        129.9953,
        -12.1957
      ],
      [
        131.5619,
        -12.1957
      ],
      [
        131.5619,
        -11.1358
      ],
      [
        129.9953,
        -11.1358
      ],
      [
        129.9953,
        -12.1957
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "NT Tiwi Islands Doserate Grid Geodetic". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/nt-tiwi-islands-doserate-grid-geodetic