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Hann River Walsh total count grid geodetic

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Created 20/01/2025

Updated 20/01/2025

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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 Hann River Walsh total count grid geodetic has a cell size of 0.00083 degrees (approximately 91m) and shows the terrestrial dose rate of the Hann River-Walsh merge, 1991. The data used to produce this grid was acquired in 1991 by the QLD Government, and consisted of 61810 line-kilometres of data at 400m line spacing and 100m terrain clearance.

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Title Hann River Walsh total count grid geodetic
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/156bcb99-3cbc-4167-9d34-19f06aa7f989
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 15/06/1991 - 31/10/1991
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        142.4247,
        -16.5795
      ],
      [
        144.2322,
        -16.5795
      ],
      [
        144.2322,
        -14.9436
      ],
      [
        142.4247,
        -14.9436
      ],
      [
        142.4247,
        -16.5795
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Data.gov.au