NSW DMR, Discovery 2000 Area N, Menindee Central, NSW, 1999 (P744), radiometric line data, AWAGS levelled  


Authors / CoAuthors

Geophysical Acquisition & Processing Section

Abstract

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 NSW DMR, Discovery 2000 Area N, Menindee Central, NSW, 1999 (P744), radiometric line data, AWAGS levelled were acquired in 1999 by the NSW Government, and consisted of 41736 line-kilometres of data at 150m line spacing and 40m 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.

Product Type

dataset

eCat Id

142114

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
( Discipline )
  • Earth sciences
( Discipline )
  • geophysics
( Feature type )
  • line
( Place )
  • Australia
( Place )
  • NSW
( Project )
  • survey 744
( Theme )
  • AWAGS
( Theme )
  • GADDS2.0
( Theme )
  • radiometrics
( Theme )
  • gamma-ray
( Theme )
  • spectrometry
( Theme )
  • NASVD
( Theme )
  • potassium
( Theme )
  • thorium
( Theme )
  • uranium
( Theme )
  • airborne digital data
( Theme )
  • geophysical survey
( Theme )
  • line
( Theme )
  • vector
  • Published_External

Publication Date

2019-12-15T00:00:00

Creation Date

2019-12-15T00:00:00

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 NSW DMR, Discovery 2000 Area N, Menindee Central, NSW, 1999 (P744), radiometric line data, AWAGS levelled is an airborne-derived radiometric data for the NSW DMR, Discovery 2000 Area N, Menindee, NSW, 1999. The data was acquired under the project No. 744 for the geological survey of NSW. A total of 41736 line-kilometres of data at a line spacing of 150m 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).

Parent Information

Geophysical Data Collection - Airborne Geophysics

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

eCat ID - 111301

Extents

[-33.0113, -32.5759, 140.9951, 141.592]

Reference System

GDA94 (EPSG:4283)

Spatial Resolution

Service Information

Associations

Association Type - operatedOnBy

NSW DMR, Discovery 2000 Area N, Menindee Central, NSW, 1999 (P744), radiometric line data, AWAGS levelled OPeNDAP    

Downloads and Links

File available for download in various formats from the GADDS2 portal  

NSW DMR, Discovery 2000 Area N, Menindee Central, NSW, 1999 (P744), radiometric line data, AWAGS levelled file download  

NSW DMR, Discovery 2000 Area N, Menindee Central, NSW, 1999 (P744), radiometric line data, AWAGS levelled OPeNDAP  

Source Information

This NSW DMR, Discovery 2000 Area N, Menindee Central, NSW, 1999 (P744), radiometric line data, AWAGS levelled includes airborne-derived radiometric data for the NSW DMR, Discovery 2000 Area N, Menindee, NSW, 1999 acquired for the geological survey of NSW