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South Australian regional radiometric images
Created: 18 Nov 2024 Revised: 15 Jan 2025

SA_RAD_U is a grid of the uranium element concentration created by merging the data recorded across 166 different airborne radiometric surveys. The data was levelled using a combination of the AWAGS (Australia Wide Airborne Geophysical Survey) and...

SA_RAD_U is a grid of the uranium element concentration created by merging the data recorded across 166 different airborne radiometric surveys. The data was levelled using a combination of the AWAGS (Australia Wide Airborne Geophysical Survey) and vehicle-borne streaming radiometric tie-lines. Grids were low-pass filtered using a 7-point, degree-3 Savitzky-Golay filter (Savitzky, A. and Golay, M.J.E., 1964. Smoothing and differentiation of data by simplified least squared procedures. Analytical Chemistry, 36: 1627-1639.). The grid was created by Gary Reed on 2011-04-04. Uranium element concentration is measured in ppm eU.

SA_RAD_TH is a grid of the thorium element concentration created by merging the data recorded across 138 different airborne radiometric surveys. The data was levelled using a combination of the AWAGS (Australia Wide Airborne Geophysical Survey) and vehicle-borne streaming radiometric tie-lines. Grids were low-pass filtered using a 7-point, degree-3 Savitzky-Golay filter (Savitzky, A. and Golay, M.J.E., 1964. Smoothing and differentiation of data by simplified least squared procedures. Analytical Chemistry, 36: 1627-1639.). The grid was created by Gary Reed on 2011-04-04. Thorium element concentration is measured in ppm eTh.

SA_RAD_KThU is a ternary image combing the State potassium (SA_RAD_K in red), thorium (SA_RAD_TH in green) and uranium (SA_RAD_U grid in blue) element concentration grids. The algorithm was created in ERMapper by Mark Asendorf on 2011-04-18. Potassium is measured in %K while uranium and thorium are in ppm.

SA_RAD_K is a grid of the potassium element concentration created by merging the data recorded across 148 different airborne radiometric surveys. The data was levelled using a combination of the AWAGS (Australia Wide Airborne Geophysical Survey) and vehicle-borne streaming radiometric tie-lines. Grids were low-pass filtered using a 7-point, degree-3 Savitzky-Golay filter (Savitzky, A. and Golay, M.J.E., 1964. Smoothing and differentiation of data by simplified least squared procedures. Analytical Chemistry, 36: 1627-1639.). The grid was created by Gary Reed on 2011-04-06. Potassium element concentration is measured in %K.

SA_RAD_DOSE is the terrestrial dose derived as a linear combination of SA_RAD_K, SA_RAD_TH and SA_RAD_U grids. The grid was created in Matlab using Geoscience Australia in-house programs by Gary Reed on 2011-04-06. Total Dose is measured in nG/h.

Grids interpolated from geo-located survey data are supplied in high precision 32 or 64 bit ERS format, processed to support data analytics.
ESRI layer files are provided for rendered display of ERS grids in ArcGIS.
Images derived from the ERS format grids are provided in 3 band, 8 bit Geotiff format, to support display and illustration.

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About this record

Record No mesac133
Topic Geoscientific Information
Type of Resource Dataset
Category Type
Document Type
Contributor
Sponsor
Tenement
Tenement Holder
Operator
Geological Province
    Other
    Mine Name
    Stratigraphy
    Commodity
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                    Language
                  
                  English
                    
                
      
              

                
      
                  
                    Metadata Standard
                  
                  ISO 19115-3
                    
                
      
              
            
    
      
  
      
            
      
            
      
              
      
  

    
      Citations
      
      
    
      
    
      
      
          Use constraints        
      
      
        License
      
    
      
    
      
      
          License        
      
      
        


  
    
  
    Creative Commons Attribution 4.0
  

  

      
    
      
    
      
      
          Persistent identifier        
      
      
        https://pid.sarig.sa.gov.au/dataset/mesac133
         
          
      
    
      
    
      
      
          Citation        
      
      
        
          South Australian regional radiometric images
          
      
          https://pid.sarig.sa.gov.au/dataset/mesac133
              
         
        
            		
    
      
  
        
  
      
  
      
            
      
            
      
              
      
  
      Technical information
      
    
  
    
                
      
                  
                    Status
                  
                  Completed
                
      
              
                
      
                  
                    Maintenance and Update Frequency
                  
                  
                
      
              
                
      
                  
                    Geographic Reference
                  
                  GDA2020 (EPSG:7844)
                
      
              
      
                
                  Geo bounding box        
                
                
                  {"type":"Polygon","coordinates":[[[129,-38],[141,-38],[141,-26],[129,-26],[129,-38]]]}
                
              
      
                
                
      
                  
                    Purpose
                  
                  
                    
      To aid in geological exploration.
      
                    
                    
      To aid in geological exploration.
      
                    
                        		
                
      
              
                
                
      
                  
                    Lineage
                  
                  
                    
      The SA_RAD_U grid is created by merging 166 different airborne surveys. A complete listing of these surveys can be found in "Ura_prioritylist.txt". The grid was created using a combination of Intrepid and Geoscience Australia in-house Matlab...
      
                    
                    
      The SA_RAD_U grid is created by merging 166 different airborne surveys. A complete listing of these surveys can be found in "Ura_prioritylist.txt". The grid was created using a combination of Intrepid and Geoscience Australia in-house Matlab programs. Further information on the technique used to merge the grids can be found in "Minty, B., Franklin R., Milligan, P., Richardson, L.M., and Wilford, J., 2009, The Radiometric Map of Australia: Exploration Geophysics, 40 (4), 325-333".

The SA_RAD_TH grid is created by merging 138 different airborne surveys. A complete listing of these surveys can be found in "Tho_prioritylist.txt". The grid was created using a combination of Intrepid and Geoscience Australia in-house C++ programs. Further information on the technique used to merge the grids can be found in "Minty, B., Franklin R., Milligan, P., Richardson, L.M., and Wilford, J., 2009, The Radiometric Map of Australia: Exploration Geophysics, 40 (4), 325-333".

The SA_RAD_KThU is a ternary image combining the SA_RAD_K, SA_RAD_TH and SA_RAD_U grids. More information on these grids can be found in "SA_RAD_K_Metadata.docx", "SA_RAD_TH_Metadata.docx" and "SA_RAD_U_Metadata.docx" respectively. Processing was undertaken in ERMapper.

The SA_RAD_K grid is created by merging 148 different airborne surveys. A complete listing of these surveys can be found in "Pot_prioritylist.txt". The grid was created using a combination of Intrepid and Geoscience Australia in-house C++ programs. Further information on the technique used to merge the grids can be found in "Minty, B., Franklin R., Milligan, P., Richardson, L.M., and Wilford, J., 2009, The Radiometric Map of Australia: Exploration Geophysics, 40 (4), 325-333".

The SA_RAD_DOSE grid was derived from the SA_RAD_K, SA_RAD_TH and SA_RAD_U grids. More information on these grids can be found in "SA_RAD_K_Metadata.docx", "SA_RAD_TH_Metadata.docx" and "SA_RAD_U_Metadata.docx" respectively. Details of the method of creating this grid can be in "Minty, B., Franklin R., Milligan, P., Richardson, L.M., and Wilford, J., 2009, The Radiometric Map of Australia: Exploration Geophysics, 40 (4), 325-333". Geoscience Australia in-house C++ programs were used for creating the grid.

Geotiff image(s) were derived from the ERS grid(s) by rendering the ERS grid with a non-linear colour stretch and sun-shading (45 degree azimuth and sun direction), before exporting to the tif image format.
      
                    
                      
      
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