Authors / CoAuthors
Kilgour, B.
Abstract
These images are derived from the "Magnetic Anomaly Grid of Australia" (GEOCAT record: 39154). That grid was compiled from 9 million line-kilometres of TMI data held in the National Airborne Geophysics Database. The data were collected in surveys conducted by Geoscience Australia and by airborne geophysical companies operating under contracts to Geoscience Australia and State and Territory Geological Surveys, either separately or in joint projects. Data from a number of other surveys, carried out for private companies, were acquired by Geoscience Australia. These datasets contain anomalies with wavelengths as small as 800 m.
Product Type
dataset
eCat Id
39153
Contact for the resource
Custodian
Owner
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- GIS DatasetNational
- ( Theme )
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- geophysics
- ( Theme )
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- magnetics
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Retired_Internal
Publication Date
2002-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
Using an ER Mapper algorithm associated with the "Magnetic Anomaly Grid of Australia" (GEOMET Record : 4381) a colour geo-referenced TIF was generated using the natural palette and manipulated so as to appear to be illuminated from the north-east. A greyscale geo-referenced TIF was also generated without illumination. These TIF images were then compressed 60 times to an adequate size for provision over the Internet utilising ER Mappers ECW compression. The grid of the Magnetic Anomaly Map of Australia, 3rd edition was then reprojected to Lambert Conformal Conic projection, with a cell size of 400 metres. Georeferenced TIF images and ECW compressed images were then generated in the same process outlined above.
Parent Information
Extents
[-45.0, -7.0, 104.0, 160.0]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Source data not available.