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 Cobar Magnetic and Radiometric Survey, 2021 survey were acquired in 2021 by the NSW Government, and consisted of line-kilometres of data at 200m line spacing and 60m terrain clearance.
Product Type
dataset
eCat Id
147204
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Resource provider
Digital Object Identifier
Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
- ( Discipline )
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- Earth sciences
- ( Discipline )
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- geophysics
- ( Feature type )
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- line
- ( Place )
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- Australia
- ( Place )
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- NSW
- ( Project )
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- survey 5009
- ( Theme )
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- GADDS2.0
- ( Theme )
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- magnetics
- ( Theme )
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- magnetism and palaeomagnetism
- ( Theme )
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- magnetic
- ( Theme )
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- airborne digital data
- ( Theme )
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- line
- ( Theme )
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- vector
- ( Theme )
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- geophysical survey
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- Published_External
Publication Date
2022-10-26T23:13:27
Creation Date
Security Constraints
Legal Constraints
Status
completed
Purpose
This data set forms part of the NSW and national airborne magnetic and radiometric mosaic that is continually updated with higher resolution datasets. When integrated with other geological, geochemical, geophysical or technical datasets, it provides pre-competitive insight into the mineral, groundwater, energy, soil and other resource potential of the continental land mass. Subject to the quality control, equipment tolerances and inherent limitations on the measurements themselves, it may also be employed for other geophysical and scientific investigations into the earth.
Maintenance Information
notPlanned
Topic Category
geoscientificInformation
Series Information
Lineage
This Cobar magnetic and radiometric survey, NSW, 2021 (P5009), Extension 4, magnetic line data is an airborne-derived magnetic line dataset for the Cobar Magnetic and Radiometric Survey, 2021 survey. The data was acquired under the project No. 5009 for the geological survey of NSW. A total of line-kilometres of data at a line spacing of 200m and 60m terrain clearance were acquired during this survey. 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).
Parent Information
Geophysical Data Collection - Airborne Geophysics
UUID - ddeb0fc4-32e3-4913-80f2-f4249b17a925,
eCat ID - 111301
Extents
[-31.882118, -31.752524, 146.442785, 146.660218]
Reference System
GDA94 (EPSG:4283)
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
This Cobar magnetic and radiometric survey, NSW, 2021 (P5009), Extension 4, magnetic line data includes airborne-derived magnetic data for the Cobar Magnetic and Radiometric Survey, 2021 survey acquired for the geological survey of NSW