GSQ Walsh Red River uranium grid geodetic  


Authors / CoAuthors

Geophysical Acquisition & Processing Section

Abstract

This GSQ Walsh Red River uranium grid geodetic is an airborne-derived radiometric uranium window countrate grid for the Walsh, Red River, Qld, 1992/93 survey. 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 uranium (K), uranium (U) and uranium (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 GSQ Walsh Red River uranium grid geodetic has a cell size of 0.00083 degrees (approximately 90m). The data are in units of counts per second (or cps). The data used to produce this grid was acquired in 1992 by the QLD Government, and consisted of 54145 line-kilometres of data at 400m line spacing and 100m terrain clearance.

Product Type

dataset

eCat Id

140849

Contact for the resource

  Point of contact

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Keywords

theme.ANZRC Fields of Research.rdf
  • EARTH SCIENCES
( Data centre )
  • NCI
( Discipline )
  • Earth sciences
( Discipline )
  • geophysics
( Feature type )
  • grid
( Place )
  • Australia
( Place )
  • QLD
( Project )
  • survey 600
( Theme )
  • GADDS2.0
( Theme )
  • radiometrics
( Theme )
  • NASVD
( Theme )
  • uranium
( Theme )
  • window countrate
( Theme )
  • airborne digital data
( Theme )
  • geophysical survey
( Theme )
  • rad
( Theme )
  • U
( Theme )
  • gamma-ray
( Theme )
  • spectrometry
( Theme )
  • grid
( Theme )
  • raster
  • Published_External

Publication Date

2020-03-07T00:00:00

Creation Date

2020-03-07T00:00:00

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

completed

Purpose

Maintenance Information

notPlanned

Topic Category

geoscientificInformation

Series Information

Lineage

This GSQ Walsh Red River uranium grid geodetic is an airborne-derived radiometric uranium window countrate grid for the Walsh, Red River, Qld, 1992/93 survey. The survey was acquired in 1992 under the project No. 600 for the geological survey of QLD. The data consisted of 54145 line-kilometres of data at 400m line spacing and 100m terrain clearance. The radiometric count rate is contaminated by background radiation contributions from the aircraft, cosmic rays, and the presence of Radon gas escaping from the ground. It is also affected by the ground clearance of the detector, as well as the volume of the detector. This grid was produced after applying radiometric corrections to the uranium window data from the survey. The final grid is checked for quality by GA geophysicists to ensure that the final data released are fit-for-purpose. This GSQ Walsh Red River uranium grid geodetic has a cell size of 0.00083 degrees (approximately 90m) and shows the uranium window countrate of the Walsh, Red River, Qld, 1992/93 survey in units of counts per second (or cps). 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 Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).

Parent Information

Geophysical Data Collection - Airborne Geophysics

UUID - ddeb0fc4-32e3-4913-80f2-f4249b17a925,

eCat ID - 111301

Extents

[-18.0097, -15.9906, 142.9914, 144.2588]

Reference System

AGD66 (EPSG:4202)

Spatial Resolution

Service Information

Associations

Association Type - operatedOnBy

GSQ Walsh Red River uranium grid geodetic NCSS    

Association Type - operatedOnBy

GSQ Walsh Red River uranium grid geodetic OPeNDAP    

Association Type - operatedOnBy

GSQ Walsh Red River uranium grid geodetic WMS    

Association Type - operatedOnBy

GSQ Walsh Red River uranium grid geodetic WCS    

Downloads and Links

File available for download in various formats from the GADDS2 portal  

GSQ Walsh Red River uranium grid geodetic file download  

GSQ Walsh Red River uranium grid geodetic NCSS  

GSQ Walsh Red River uranium grid geodetic OPeNDAP  

GSQ Walsh Red River uranium grid geodetic WMS  

GSQ Walsh Red River uranium grid geodetic WCS  

Source Information

This GSQ Walsh Red River uranium grid geodetic includes airborne-derived radiometric Uranium window count radiometric data for the Walsh, Red River, Qld, 1992/93 survey acquired for the geological survey of QLD