Data

Urapunga 1N, NT, 1994 (P622), 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/141703&rft.title=Urapunga 1N, NT, 1994 (P622), radiometric line data, AWAGS levelled&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/141703&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 Urapunga 1N, NT, 1994 (P622), radiometric line data, AWAGS levelled were acquired in 1994 by the NT Government, and consisted of 91316 line-kilometres of data at 500m line spacing and 100m 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 Urapunga 1N, NT, 1994 (P622), radiometric line data, AWAGS levelled is an airborne-derived radiometric data for the Urapunga, NT, 1994. The data was acquired under the project No. 622 for the geological survey of NT. A total of 91316 line-kilometres of data at a line spacing of 500m 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=133.4561; southlimit=-14.0726; eastlimit=134.0293; northlimit=-12.9647; projection=GDA94 (EPSG:4283)&rft.coverage=westlimit=133.4561; southlimit=-14.0726; eastlimit=134.0293; northlimit=-12.9647; 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) and Northern Territory of Australia (Northern Territory Geological Survey) 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=NT&rft_subject=survey 622&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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Creative Commons Attribution 4.0 International Licence
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(c) Commonwealth of Australia (Geoscience Australia) and Northern Territory of Australia (Northern Territory Geological Survey) 2019

Australian Government Security ClassificationSystem

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WWW:LINK-1.0-http--link

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Contact Information

clientservices@ga.gov.au

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 Urapunga 1N, NT, 1994 (P622), radiometric line data, AWAGS levelled were acquired in 1994 by the NT Government, and consisted of 91316 line-kilometres of data at 500m line spacing and 100m 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 Urapunga 1N, NT, 1994 (P622), radiometric line data, AWAGS levelled is an airborne-derived radiometric data for the Urapunga, NT, 1994. The data was acquired under the project No. 622 for the geological survey of NT. A total of 91316 line-kilometres of data at a line spacing of 500m 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: 27 04 1994 to 22 06 1994

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134.0293,-12.9647 134.0293,-14.0726 133.4561,-14.0726 133.4561,-12.9647 134.0293,-12.9647

133.7427,-13.51865

text: westlimit=133.4561; southlimit=-14.0726; eastlimit=134.0293; northlimit=-12.9647; projection=GDA94 (EPSG:4283)

Subjects
AWAGS | Australia | EARTH SCIENCES | Earth sciences | GADDS2.0 | NASVD | NT | Published_External | airborne digital data | gamma-ray | geophysical survey | geophysics | geoscientificInformation | line | potassium | radiometrics | spectrometry | survey 622 | 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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