Data

Radiometric Grid of Australia (Radmap) v4 2019 filtered pct potassium grid

Name: Radiometric Grid of Australia (Radmap) v4 2019 filtered pct potassium grid
Published: 2015

Geoscience Australia

Poudjom Djomani, Y. ; Minty, B.R.S.

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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/131962&rft.title=Radiometric Grid of Australia (Radmap) v4 2019 filtered pct potassium grid&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/131962&rft.publisher=Geoscience Australia&rft.description=The filtered potassium grid is a derivative of the 2019 radiometric or gamma-ray grid of Australia. 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, uranium and thorium. The data are collected on airborne geophysical surveys conducted by Commonwealth, State and Northern Territory Governments and the private sector. The 2019 filtered potassium grid has a cell size of about 100m (0.001 degrees) and shows potassium element concentrations of the Australia region. It was obtained by applying a low-pass filter to the original potassium grid. Potassium is the seventh most abundant element in the Earth's crust. This potassium concentration grid can be used to locate minerals and compounds containing potassium.Maintenance and Update Frequency: notPlannedStatement: The filtered potassium grid is a derivative of the 2019 radiometric or gamma-ray grid of Australia. The radiometric grid of Australia is derived by merging over 600 airborne gamma-ray spectrometric surveys by the Commonwealth, State and Territory Governments and held in the national radioelement database of Australia. The cell sizes of the original survey grids range from 50 m through 800 m, but most have a cell size of about 100 m. The original survey grids are levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS). The grids were then re-sampled to generate the Radiometric Map of Australia Grids with a cell size of about 100m (0.001 degrees). The survey grids are levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS). The AWAGS traverses were funded under the Australian Government’s Onshore Energy Security Program in 2007. They comprise N-S flight lines spaced 75 km apart and E-W tie lines spaced 400 km apart across the entire continent. The AWAGS survey was designed to serve as a baseline for both airborne gamma-ray spectrometric and magnetic surveys. Since the AWAGS traverses are consistent with the International Atomic Energy Agency’s (IAEA) radioelement datum, the new continental merges are level to this datum as well. The data quality varies depending on the survey. The data 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 final grid is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This filtered potassium element concentrations grid is obtained by applying a low-pass filter to the potassium grid.&rft.creator=Poudjom Djomani, Y. &rft.creator=Minty, B.R.S. &rft.date=2015&rft.coverage=westlimit=112.7175; southlimit=-43.7615; eastlimit=153.6715; northlimit=-9.0005; projection=GDA94 (EPSG:4283)&rft.coverage=westlimit=112.7175; southlimit=-43.7615; eastlimit=153.6715; northlimit=-9.0005; 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=WWW:LINK-1.0-http--link&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=HVC_144636&rft_subject=airborne digital data&rft_subject=radiometrics&rft_subject=potassium&rft_subject=national geophysical compilation&rft_subject=Earth sciences&rft_subject=geophysics&rft_subject=NCI&rft_subject=Australia&rft_subject=grid&rft_subject=Published_External&rft_subject=raster&rft_subject=GADDS2.0&rft_subject=2019&rft_subject=radmap&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/

WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

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Brief description

The filtered potassium grid is a derivative of the 2019 radiometric or gamma-ray grid of Australia. 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, uranium and thorium. The data are collected on airborne geophysical surveys conducted by Commonwealth, State and Northern Territory Governments and the private sector. The 2019 filtered potassium grid has a cell size of about 100m (0.001 degrees) and shows potassium element concentrations of the Australia region. It was obtained by applying a low-pass filter to the original potassium grid. Potassium is the seventh most abundant element in the Earth's crust. This potassium concentration grid can be used to locate minerals and compounds containing potassium.

Lineage

Maintenance and Update Frequency: notPlanned

Statement: The filtered potassium grid is a derivative of the 2019 radiometric or gamma-ray grid of Australia. The radiometric grid of Australia is derived by merging over 600 airborne gamma-ray spectrometric surveys by the Commonwealth, State and Territory Governments and held in the national radioelement database of Australia. The cell sizes of the original survey grids range from 50 m through 800 m, but most have a cell size of about 100 m. The original survey grids are levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS). The grids were then re-sampled to generate the Radiometric Map of Australia Grids with a cell size of about 100m (0.001 degrees). The survey grids are levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS). The AWAGS traverses were funded under the Australian Government’s Onshore Energy Security Program in 2007. They comprise N-S flight lines spaced 75 km apart and E-W tie lines spaced 400 km apart across the entire continent. The AWAGS survey was designed to serve as a baseline for both airborne gamma-ray spectrometric and magnetic surveys. Since the AWAGS traverses are consistent with the International Atomic Energy Agency’s (IAEA) radioelement datum, the new continental merges are level to this datum as well. The data quality varies depending on the survey. The data 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 final grid is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This filtered potassium element concentrations grid is obtained by applying a low-pass filter to the potassium grid.

Created: 2015

Issued: 20 11 2019

This dataset is part of a larger collection

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text: westlimit=112.7175; southlimit=-43.7615; eastlimit=153.6715; northlimit=-9.0005; projection=GDA94 (EPSG:4283)

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uri : https://d28rz98at9flks.cloudfront.net/131962/131962.zip External Link

Identifiers

DOI : 10.26186/5DD48D628F4F6
URI : pid.geoscience.gov.au/dataset/ga/131962
global : 35282a15-e5e1-435a-ae3c-90bb80c5f09d

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