Data

GSQ Texas Qld total count grid geodetic

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=https://pid.geoscience.gov.au/dataset/ga/141867&rft.title=GSQ Texas Qld total count grid geodetic&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/141867&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 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 GSQ Texas Qld total count grid geodetic has a cell size of 0.00096 degrees (approximately 100m) and shows the terrestrial dose rate of the Texas, Qld, 1996,AIRDATA. The data used to produce this grid was acquired in 1996 by the QLD Government, and consisted of 38986 line-kilometres of data at 400m line spacing and 80m terrain clearance.Maintenance and Update Frequency: notPlannedStatement: This GSQ Texas Qld total count grid geodetic is an airborne-derived radiometric terrestrial dose rate grid for the Texas, Qld, 1996,AIRDATA survey. The survey was acquired under the project No. 792 for the geological survey of QLD. The grid has a cell size of 0.00096 degrees (approximately 100m). A total of 38986 line-kilometres of data at a line spacing of 400m were acquired to produce this grid. The terrestrial dose rate grid 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=150.7734; southlimit=-28.9633; eastlimit=152.3104; northlimit=-27.7883; projection=GDA94 (EPSG:4283)&rft.coverage=westlimit=150.7734; southlimit=-28.9633; eastlimit=152.3104; northlimit=-27.7883; projection=GDA94 (EPSG:4283)&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=(c) Geological Survey of Queensland 2020&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&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=QLD&rft_subject=survey 792&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=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
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Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

(c) Geological Survey of Queensland 2020

Australian Government Security ClassificationSystem

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Brief 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 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 GSQ Texas Qld total count grid geodetic has a cell size of 0.00096 degrees (approximately 100m) and shows the terrestrial dose rate of the Texas, Qld, 1996,AIRDATA. The data used to produce this grid was acquired in 1996 by the QLD Government, and consisted of 38986 line-kilometres of data at 400m line spacing and 80m terrain clearance.

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Maintenance and Update Frequency: notPlanned
Statement: This GSQ Texas Qld total count grid geodetic is an airborne-derived radiometric terrestrial dose rate grid for the Texas, Qld, 1996,AIRDATA survey. The survey was acquired under the project No. 792 for the geological survey of QLD. The grid has a cell size of 0.00096 degrees (approximately 100m). A total of 38986 line-kilometres of data at a line spacing of 400m were acquired to produce this grid. The terrestrial dose rate grid 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: 07 03 2020

Issued: 07 03 2020

Modified: 06 07 2021

Data time period: 23 07 1996 to 26 08 1996

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152.3104,-27.7883 152.3104,-28.9633 150.7734,-28.9633 150.7734,-27.7883 152.3104,-27.7883

151.5419,-28.3758

text: westlimit=150.7734; southlimit=-28.9633; eastlimit=152.3104; northlimit=-27.7883; projection=GDA94 (EPSG:4283)

Subjects
Australia | EARTH SCIENCES | Earth sciences | GADDS2.0 | K | NASVD | NCI | Published_External | QLD | Th | U | airborne digital data | dose | dose rate | gamma-ray | geophysical survey | geophysics | geoscientificInformation | grid | potassium | rad | radiometrics | raster | rate | spectrometry | survey 792 | thorium | uranium |

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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)

uri : https://portal.ga.gov.au/persona/gadds

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