Data

Rason/Throssel West (WGC 1991) (P660), radiometric line data, AWAGS levelled

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/141523&rft.title=Rason/Throssel West (WGC 1991) (P660), radiometric line data, AWAGS levelled&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/141523&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. This Rason/Throssel West (WGC 1991) (P660), radiometric line data, AWAGS levelled were acquired in 1991 by the WA Government, and consisted of 46940 line-kilometres of data at 200m line spacing and 60m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.Maintenance and Update Frequency: notPlannedStatement: This Rason/Throssel West (WGC 1991) (P660), radiometric line data, AWAGS levelled is an airborne-derived radiometric data for the Rason/Throssel West (WGC 1991). The data was acquired under the project No. 660 for the geological survey of WA. A total of 46940 line-kilometres of data at a line spacing of 200m were acquired during this survey. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data (Milligan et al., 2009). This survey data is essentially levelled to AWAGS. 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. 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. References: Milligan, P.R., Minty, B.R.S., Richardson, M. & Franklin, R., 2009. The Australia-wide Airborne Geophysical Survey accurate continental magnetic coverage. Preview, No. 138, p. 1-128, Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).&rft.creator=Geophysical Acquisition & Processing Section &rft.date=2019&rft.coverage=westlimit=122.9889; southlimit=-29.0051; eastlimit=123.5065; northlimit=-27.4926; projection=GDA94 (EPSG:4283)&rft.coverage=westlimit=122.9889; southlimit=-29.0051; eastlimit=123.5065; northlimit=-27.4926; 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) Commonwealth of Australia (Geoscience Australia) 2019&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=Earth sciences&rft_subject=geophysics&rft_subject=line&rft_subject=Australia&rft_subject=WA&rft_subject=survey 660&rft_subject=AWAGS&rft_subject=GADDS2.0&rft_subject=radiometrics&rft_subject=gamma-ray&rft_subject=spectrometry&rft_subject=NASVD&rft_subject=potassium&rft_subject=thorium&rft_subject=uranium&rft_subject=airborne digital data&rft_subject=geophysical survey&rft_subject=vector&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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(c) Commonwealth of Australia (Geoscience Australia) 2019

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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. This Rason/Throssel West (WGC 1991) (P660), radiometric line data, AWAGS levelled were acquired in 1991 by the WA Government, and consisted of 46940 line-kilometres of data at 200m line spacing and 60m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: This Rason/Throssel West (WGC 1991) (P660), radiometric line data, AWAGS levelled is an airborne-derived radiometric data for the Rason/Throssel West (WGC 1991). The data was acquired under the project No. 660 for the geological survey of WA. A total of 46940 line-kilometres of data at a line spacing of 200m were acquired during this survey. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data (Milligan et al., 2009). This survey data is essentially levelled to AWAGS. 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. 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. References: Milligan, P.R., Minty, B.R.S., Richardson, M. & Franklin, R., 2009. The Australia-wide Airborne Geophysical Survey accurate continental magnetic coverage. Preview, No. 138, p. 1-128, Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).

Created: 15 12 2019

Issued: 15 12 2019

Modified: 06 07 2021

Data time period: 02 1991 to 20 02 1991

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123.5065,-27.4926 123.5065,-29.0051 122.9889,-29.0051 122.9889,-27.4926 123.5065,-27.4926

123.2477,-28.24885

text: westlimit=122.9889; southlimit=-29.0051; eastlimit=123.5065; northlimit=-27.4926; projection=GDA94 (EPSG:4283)

Subjects
AWAGS | Australia | EARTH SCIENCES | Earth sciences | GADDS2.0 | NASVD | Published_External | WA | airborne digital data | gamma-ray | geophysical survey | geophysics | geoscientificInformation | line | potassium | radiometrics | spectrometry | survey 660 | thorium | uranium | vector |

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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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