Data

Wellington 1 100k thorium 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/140949&rft.title=Wellington 1 100k thorium grid geodetic&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/140949&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 radiometric thorium grid has a cell size of 0.00042 degrees (approximately 43m) and shows thorium element concentration of the Dubbo Detail NSW 1991 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1991 by the NSW Government, and consisted of 63636 line-kilometres of data at a line spacing between 200m and 400m, and 100m terrain clearance.Maintenance and Update Frequency: notPlannedStatement: This Wellington 1 100k thorium grid geodetic is an airborne-derived radiometric thorium grid for the Dubbo Detail NSW 1991. The survey was acquired under the project No. 569 for the geological survey of NSW. The grid has a cell size of 0.00042 degrees (approximately 43m). A total of 63636 line-kilometres of data at a line spacing between 200m and 400, and 100m terrain clearance were acquired to produce this grid. This radiometric thorium grid shows thorium element concentration of the Dubbo Detail NSW 1991 in units of parts per million (or ppm). 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. Reference: Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).&rft.creator=Geophysical Acquisition & Processing Section &rft.date=2020&rft.coverage=westlimit=148.4998; southlimit=-32.9998; eastlimit=149.2502; northlimit=-32.2498; projection=AGD66 (EPSG:4202)&rft.coverage=westlimit=148.4998; southlimit=-32.9998; eastlimit=149.2502; northlimit=-32.2498; projection=AGD66 (EPSG:4202)&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 State of New South Wales (Department of Regional New South Wales) 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=NSW&rft_subject=survey 569&rft_subject=GADDS2.0&rft_subject=radiometrics&rft_subject=NASVD&rft_subject=thorium&rft_subject=airborne digital data&rft_subject=geophysical survey&rft_subject=rad&rft_subject=Th&rft_subject=gamma-ray&rft_subject=spectrometry&rft_subject=raster&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
Cite Saved to MyRDA Save to MyRDA

Licence & Rights:

Open Licence view details
CC-BY

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) Commonwealth of Australia (Geoscience Australia) and State of New South Wales (Department of Regional New South Wales) 2020

Australian Government Security ClassificationSystem

https://www.protectivesecurity.gov.au/Pages/default.aspx

WWW:LINK-1.0-http--link

Access:

Open

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 radiometric thorium grid has a cell size of 0.00042 degrees (approximately 43m) and shows thorium element concentration of the Dubbo Detail NSW 1991 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1991 by the NSW Government, and consisted of 63636 line-kilometres of data at a line spacing between 200m and 400m, and 100m terrain clearance.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: This Wellington 1 100k thorium grid geodetic is an airborne-derived radiometric thorium grid for the Dubbo Detail NSW 1991. The survey was acquired under the project No. 569 for the geological survey of NSW. The grid has a cell size of 0.00042 degrees (approximately 43m). A total of 63636 line-kilometres of data at a line spacing between 200m and 400, and 100m terrain clearance were acquired to produce this grid. This radiometric thorium grid shows thorium element concentration of the Dubbo Detail NSW 1991 in units of parts per million (or ppm). 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. Reference: Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).

Created: 09 03 2020

Issued: 09 03 2020

Modified: 06 07 2021

Data time period: 11 03 1991 to 27 05 1991

This dataset is part of a larger collection

Click to explore relationships graph
Help

Related Organisations

Related People

Related Services

149.2502,-32.2498 149.2502,-32.9998 148.4998,-32.9998 148.4998,-32.2498 149.2502,-32.2498

148.875,-32.6248

text: westlimit=148.4998; southlimit=-32.9998; eastlimit=149.2502; northlimit=-32.2498; projection=AGD66 (EPSG:4202)

Subjects
Australia | EARTH SCIENCES | Earth sciences | GADDS2.0 | NASVD | NCI | NSW | Published_External | Th | airborne digital data | gamma-ray | geophysical survey | geophysics | geoscientificInformation | grid | rad | radiometrics | raster | spectrometry | survey 569 | thorium |

User Contributed Tags    

Login to tag this record with meaningful keywords to make it easier to discover

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

Identifiers
Similar data you may be interested in: