Data

5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied

Geoscience Australia

Geophysical Acquisition & Processing Section

Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]

ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26186/150969&rft.title=5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied&rft.identifier=10.26186/150969&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=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 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied has a cell size of degrees (approximately 20m) and shows the total dose rate of the Narryer survey. The data used to produce this grid was acquired in 2024 by the WA Government, and consisted of 415090 line-kilometres of data at 100m line spacing and 50m terrain clearance.Maintenance and Update Frequency: asNeededStatement: This 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied is an airborne-derived radiometric total dose rate grid for the Narryer survey. The survey was acquired under the project No. 5028 for the geological survey of WA. The grid has a cell size of degrees (approximately 20m). A total of 415090 line-kilometres of data at a line spacing of 100m were acquired to produce this grid. 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. Noise-adjusted singular value decomposition (NASVD) has been applied to the data. NASVD is a spectral component analysis procedure for the removal of noise from gamma-ray spectra. The terrestrial dose is derived as a linear combination of the filtered K, U and Th grids. Details of the specifications of individual airborne surveys can be found in the Fourteenth Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). This Index is also available online at http://pid.geoscience.gov.au/dataset/79134. Reference: Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).&rft.creator=Geophysical Acquisition & Processing Section &rft.date=2026&rft.coverage=westlimit=116.56995866376771; southlimit=-26.5617778641315; eastlimit=118.13478177095676; northlimit=-25.482122844349238; projection=GDA94 (EPSG:4283)&rft.coverage=westlimit=116.56995866376771; southlimit=-26.5617778641315; eastlimit=118.13478177095676; northlimit=-25.482122844349238; projection=GDA94 (EPSG:4283)&rft_rights=Creative Commons Attribution 4.0 International Licence https://creativecommons.org/licenses/by/4.0/&rft_rights=© Commonwealth of Australia (Geoscience Australia) and State of Western Australia (Department of Mines, Industry Regulation and Safety) 2026&rft_rights=Australian Government Security Classification System https://www.protectivesecurity.gov.au/publications-library/policy-8-classification-system&rft_subject=geoscientificInformation&rft_subject=EARTH SCIENCES&rft_subject=NCI&rft_subject=Earth sciences&rft_subject=geophysics&rft_subject=grid&rft_subject=Australia&rft_subject=WA&rft_subject=survey 5028&rft_subject=GADDS2.0&rft_subject=radiometrics&rft_subject=NASVD&rft_subject=thorium&rft_subject=uranium&rft_subject=potassium&rft_subject=dose rate&rft_subject=total dose&rft_subject=rate&rft_subject=airborne digital data&rft_subject=geophysical survey&rft_subject=rad&rft_subject=K&rft_subject=Th&rft_subject=U&rft_subject=gamma-ray&rft_subject=spectrometry&rft_subject=raster&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data

Access data via landing page
http://rhe-ecat-prod01...

Cite Saved to MyRDA Save to MyRDA

Licence & Rights:

Open Licence view details

Creative Commons Attribution 4.0 International Licence
https://creativecommons.org/licenses/by/4.0/

Australian Government Security Classification System
https://www.protectivesecurity.gov.au/publications-library/policy-8-classification-system

Access:

Open

Full description

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 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied has a cell size of degrees (approximately 20m) and shows the total dose rate of the Narryer survey. The data used to produce this grid was acquired in 2024 by the WA Government, and consisted of 415090 line-kilometres of data at 100m line spacing and 50m terrain clearance.

Lineage

Maintenance and Update Frequency: asNeeded

Statement: This 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied is an airborne-derived radiometric total dose rate grid for the Narryer survey. The survey was acquired under the project No. 5028 for the geological survey of WA. The grid has a cell size of degrees (approximately 20m). A total of 415090 line-kilometres of data at a line spacing of 100m were acquired to produce this grid. 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. Noise-adjusted singular value decomposition (NASVD) has been applied to the data. NASVD is a spectral component analysis procedure for the removal of noise from gamma-ray spectra. The terrestrial dose is derived as a linear combination of the filtered K, U and Th grids. Details of the specifications of individual airborne surveys can be found in the Fourteenth Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). This Index is also available online at http://pid.geoscience.gov.au/dataset/79134. Reference: Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).

Notes

Purpose
Magnetic and radiometric data are types of geophysical information primarily used to map geology. The data will have applications in mineral, energy, and groundwater exploration as well as environmental studies.

Issued: 05 05 2026

Data time period: 2026-02-25 to 2026-02-25

This dataset is part of a larger collection

Click to explore relationships graph

text: westlimit=116.56995866376771; southlimit=-26.5617778641315; eastlimit=118.13478177095676; northlimit=-25.482122844349238; projection=GDA94 (EPSG:4283)

Subjects

User Contributed Tags

Other Information

The Geophysical Archive Data Delivery System (GADDS2) portal provides HTTP download of geophysics datasets in a number of formats. Point and line datasets are available in NetCDF and ASEG-GDF2. Grid datasets are available in NetCDF, GeoTIFF and ERS. (File available for download in various formats from the GADDS2 portal)

url : https://portal.ga.gov.au/persona/gadds External Link

File download for 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied (5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied file download)

url : https://thredds.nci.org.au/thredds/fileServer/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/WA/grid/P5028/P5028_2_dose_rate.nc External Link

NetCDF Subsetting Service (NCSS) for 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied (5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied NCSS)

url : https://thredds.nci.org.au/thredds/ncss/grid/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/WA/grid/P5028/P5028_2_dose_rate.nc/dataset.html External Link

OPeNDAP web service for 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied (5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied OPeNDAP)

url : https://thredds.nci.org.au/thredds/dodsC/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/WA/grid/P5028/P5028_2_dose_rate.nc.html External Link

OGC Web Mapping Service (WMS) for 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied (5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied WMS)

url : https://thredds.nci.org.au/thredds/wms/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/WA/grid/P5028/P5028_2_dose_rate.nc?service=WMS&version=1.3.0&request=GetCapabilities External Link

OGC Web Coverage Service (WCS) for 5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied (5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied WCS)

url : https://thredds.nci.org.au/thredds/wcs/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/WA/grid/P5028/P5028_2_dose_rate.nc?service=WCS&version=1.0.0&request=GetCapabilities External Link

5028 Block 2 (Southeast) Grid of equivalent air-absorbed dose rate with NASVD and standard reductions applied NCSS