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North Central Tasmania dose rate 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 North Central Tasmania dose rate grid geodetic has a cell size of 0.00042 degrees (approximately 40m) and shows the terrestrial dose rate of the North Central Tasmania, Tas, 1999. The data used to produce this grid was acquired in 1999 by the TAS Government, and consisted of 39404 line-kilometres of data at 200m line spacing and 80m terrain clearance.

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Additional Info

Field Value
Title North Central Tasmania dose rate grid geodetic
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/b59d60f1-7a44-4627-9b5d-a18d1c4a2cf5
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 31/01/1999 - 18/03/1999
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        146.3095,
        -42.4685
      ],
      [
        147.7512,
        -42.4685
      ],
      [
        147.7512,
        -40.9744
      ],
      [
        146.3095,
        -40.9744
      ],
      [
        146.3095,
        -42.4685
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "North Central Tasmania dose rate grid geodetic". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/north-central-tasmania-dose-rate-grid-geodetic