Data

Gairdner - dose rate grid (AWAGS)

Name: Gairdner - dose rate grid (AWAGS)
Published: 2020

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=http://rhe-ecat-prod01.prod.lan:8080/geonetwork/srv/eng/search?uuid=a6bd6c33-0483-4a9c-9fec-dd36391a9d1e&rft.title=Gairdner - dose rate grid (AWAGS)&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/144974&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 Gairdner - dose rate grid (AWAGS) has a cell size of 0.0004 degrees (approximately 41m) and shows the total dose rate of the Gairdner Airborne Magnetic Radiometric and DEM survey, SA, 2018 survey. The data used to produce this grid was acquired in 2018 by the SA Government, and consisted of 104788 line-kilometres of data at 200m line spacing and 60m terrain clearance.Maintenance and Update Frequency: notPlannedStatement: This Gairdner - dose rate grid (AWAGS) is an airborne-derived radiometric total dose rate grid for the Gairdner Airborne Magnetic Radiometric and DEM survey, SA, 2018 survey. The survey was acquired under the project No. 1309 for the geological survey of SA. The grid has a cell size of 0.0004 degrees (approximately 41m). A total of 104788 line-kilometres of data at a line spacing of 200m 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=2020&rft.coverage=westlimit=134.9958; southlimit=-32.6746; eastlimit=136.5046; northlimit=-31.491; projection=GDA94 (EPSG:4283)&rft.coverage=westlimit=134.9958; southlimit=-32.6746; eastlimit=136.5046; northlimit=-31.491; projection=GDA94 (EPSG:4283)&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/&rft_rights=(c) Commonwealth of Australia (Geoscience Australia) and Department for Energy and Mining, Government of South Australia 2020&rft_rights=Australian Government Security ClassificationSystem https://www.protectivesecurity.gov.au/Pages/default.aspx&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=SA&rft_subject=survey 1309&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
http://creativecommons.org/licenses/

(c) Commonwealth of Australia (Geoscience Australia) and Department for Energy and Mining, Government of South Australia 2020

Australian Government Security ClassificationSystem
https://www.protectivesecurity.gov.au/Pages/default.aspx

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 Gairdner - dose rate grid (AWAGS) has a cell size of 0.0004 degrees (approximately 41m) and shows the total dose rate of the Gairdner Airborne Magnetic Radiometric and DEM survey, SA, 2018 survey. The data used to produce this grid was acquired in 2018 by the SA Government, and consisted of 104788 line-kilometres of data at 200m line spacing and 60m terrain clearance.

Lineage

Maintenance and Update Frequency: notPlanned

Statement: This Gairdner - dose rate grid (AWAGS) is an airborne-derived radiometric total dose rate grid for the Gairdner Airborne Magnetic Radiometric and DEM survey, SA, 2018 survey. The survey was acquired under the project No. 1309 for the geological survey of SA. The grid has a cell size of 0.0004 degrees (approximately 41m). A total of 104788 line-kilometres of data at a line spacing of 200m 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).

Created: 31 10 2020

Issued: 31 10 2020

Modified: 05 07 2021

Data time period: 30 06 2018 to 23 01 2019

This dataset is part of a larger collection

Click to explore relationships graph

text: westlimit=134.9958; southlimit=-32.6746; eastlimit=136.5046; northlimit=-31.491; 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 Gairdner - dose rate grid (AWAGS) (Gairdner - dose rate grid (AWAGS) file download)

url : https://thredds.nci.org.au/thredds/fileServer/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/SA/grid/P1309/P1309-grid-dose_total-AWAGS_RAD_2019.nc External Link

NetCDF Subsetting Service (NCSS) for Gairdner - dose rate grid (AWAGS) (Gairdner - dose rate grid (AWAGS) NCSS)

url : https://thredds.nci.org.au/thredds/ncss/grid/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/SA/grid/P1309/P1309-grid-dose_total-AWAGS_RAD_2019.nc/dataset.html External Link

OPeNDAP web service for Gairdner - dose rate grid (AWAGS) (Gairdner - dose rate grid (AWAGS) OPeNDAP)

url : https://thredds.nci.org.au/thredds/dodsC/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/SA/grid/P1309/P1309-grid-dose_total-AWAGS_RAD_2019.nc.html External Link

OGC Web Mapping Service (WMS) for Gairdner - dose rate grid (AWAGS) (Gairdner - dose rate grid (AWAGS) WMS)

url : https://thredds.nci.org.au/thredds/wms/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/SA/grid/P1309/P1309-grid-dose_total-AWAGS_RAD_2019.nc?service=WMS&version=1.3.0&request=GetCapabilities External Link

OGC Web Coverage Service (WCS) for Gairdner - dose rate grid (AWAGS) (Gairdner - dose rate grid (AWAGS) WCS)

url : https://thredds.nci.org.au/thredds/wcs/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/SA/grid/P1309/P1309-grid-dose_total-AWAGS_RAD_2019.nc?service=WCS&version=1.0.0&request=GetCapabilities External Link

Gairdner - dose rate grid (AWAGS) NCSS

Gairdner - dose rate grid (AWAGS) OPeNDAP

Gairdner - dose rate grid (AWAGS) WMS

Gairdner - dose rate grid (AWAGS) WCS

Identifiers

URL : pid.geoscience.gov.au/dataset/ga/144974
global : a6bd6c33-0483-4a9c-9fec-dd36391a9d1e