Product catalogue
Radiometric Grid of Australia (Radmap) v4 2019 unfiltered ppm thorium
The unfiltered thorium grid is a derivative of the 2019 radiometric or gamma-ray grid of Australia which is a merge of over 600 individual gamma-ray spectrometric surveys. 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 are collected on airborne geophysical surveys conducted by Commonwealth, State and Northern Territory Governments and the private sector.
The 2019 unfiltered thorium grid has a cell size of about 100 m (0.001 degrees) and shows thorium element concentrations of the Australia region.
Simple
Identification info
- Date (Creation)
- 2019-10-01T00:00:00
- Date (Publication)
- 2019-11-20T02:42:23
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/131988
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.26186/5dd4a821a334d
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Poudjom Djomani, Y.
Author Minty, B.R.S.
- Point of contact
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Role Organisation / Individual Name Details Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice Resource provider Resources Division
Point of contact Poudjom Djomani, Y.
- Topic category
-
- Geoscientific information
Extent
))
- Maintenance and update frequency
- Not planned
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Theme
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airborne digital data
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- Theme
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radiometrics
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- Process
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thorium
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- Theme
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national geophysical compilation
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- Discipline
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Earth sciences
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- Discipline
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geophysics
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- Data centre
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NCI
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- Place
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Australia
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- Feature type
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grid
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- Keywords
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Published_External
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- Service
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GADDS2.0
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- Product
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radmap
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- Feature type
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raster
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- Temporal
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2019
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Download the data (ers) [2.2 GB]
Download the data (ers) [2.2 GB]
- Distribution format
-
-
ers
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Resource lineage
- Statement
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The unfiltered thorium grid is a derivative of the 2019 radiometric or gamma-ray grid of Australia. The radiometric grid of Australia is derived by merging over 600 airborne gamma-ray spectrometric surveys by the Commonwealth, State and Territory Governments and held in the national radioelement database of Australia. The cell sizes of the original survey grids range from 50 m through 800 m, but most have a cell size of about 100 m. The original survey grids are levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS). The grids were then re-sampled to generate the Radiometric Map of Australia Grids with a cell size of about 100m (0.001 degrees).
The survey grids are levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS). The AWAGS traverses were funded under the Australian Government’s Onshore Energy Security Program in 2007. They comprise N-S flight lines spaced 75 km apart and E-W tie lines spaced 400 km apart across the entire continent. The AWAGS survey was designed to serve as a baseline for both airborne gamma-ray spectrometric and magnetic surveys. Since the AWAGS traverses are consistent with the International Atomic Energy Agency’s (IAEA) radioelement datum, the new continental merges are level to this datum as well.
The data quality varies depending on the survey. 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 final grid is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
- Hierarchy level
- Dataset
- Description
-
The radiometric grid of Australia is derived by merging over 550 airborne gamma-ray spectrometric surveys by the Commonwealth, State and Territory Governments and held in the national radioelement database of Australia.
Reference System Information
- Reference system identifier
- EPSG/GDA94 (EPSG:4283)
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/206a0bef-692e-45dc-a803-b058309de7f0
- Title
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GeoNetwork UUID
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Poudjom Djomani, Y.
- Title
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Geophysical Data Collection - radiometrics
- Date (Creation)
- 1951-01-01T00:00:00
- Edition date
- 1951-01-01T00:00:00
Identifier
- Description
-
UUID
Identifier
- Description
-
eCat ID
Type of resource
- Resource scope
- Dataset
- Name
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dataset
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/131988
- Date info (Revision)
- 2018-04-20T05:51:53
- Date info (Creation)
- 2015-10-15T00:00:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551