Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 (P1065), magnetic line data, AWAGS levelled  


Authors / CoAuthors

Geophysical Acquisition & Processing Section

Abstract

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data 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. These line dataset from the Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 survey were acquired in 2004 by the WA Government, and consisted of 83101 line-kilometres of data at a line spacing between 200m and 200m, 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.

Product Type

dataset

eCat Id

142353

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 )
  • WA
( Project )
  • survey 1065
( Theme )
  • AWAGS
( Theme )
  • GADDS2.0
( Theme )
  • magnetics
( Theme )
  • magnetism and palaeomagnetism
( Theme )
  • magnetic
( Theme )
  • airborne digital data
( Theme )
  • line
( Theme )
  • vector
( Theme )
  • geophysical survey
  • 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 Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 (P1065), magnetic line data, AWAGS levelled is an airborne-derived magnetic line dataset for the Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 survey. The data was acquired under the project No. 1065 for the geological survey of WA. A total of 83101 line-kilometres of data at a line spacing between 200m and 400m, and 60m terrain clearance 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. 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

[-33.0185, -29.9623, 119.7314, 121.6543]

Reference System

GDA94 (EPSG:4283)

Spatial Resolution

Service Information

Associations

Association Type - operatedOnBy

Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 (P1065), magnetic line data, AWAGS levelled OPeNDAP    

Downloads and Links

File available for download in various formats from the GADDS2 portal  

Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 (P1065), magnetic line data, AWAGS levelled file download  

Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 (P1065), magnetic line data, AWAGS levelled OPeNDAP  

Source Information

This Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 (P1065), magnetic line data, AWAGS levelled includes airborne-derived magnetic data for the Southern Yilgarn (Boorabbin, Lk Johnstn, Sthn Cross, W Kal.), WA, 2004 survey acquired for the geological survey of WA