Product catalogue
East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid
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. The total dose rate is due to natural sources of radiation and is computed by adding estimates of cosmic dose at ground level to the terrestrial dose. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered total dose rate grid.
This East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid has a cell size of degrees (approximately 40m) and shows the total dose rate of the East Tasmania Magnetic and Radiometric Survey, 2022 survey. The data used to produce this grid was acquired in 2022 by the TAS Government, and consisted of 57178 line-kilometres of data at 200m line spacing and 80m terrain clearance.
Simple
Identification info
- Date (Creation)
- 2022-11-22T00:00:00
- Date (Publication)
- 2022-11-22T00:00:00
- Date (Revision)
- 2022-12-07T04:33:28
- Citation identifier
- Digital Object Identifier/https://dx.doi.org/10.26186/147528
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Geophysical Acquisition & Processing Section
- Purpose
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This data set forms part of the Tasmania 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.
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Goodwin, J.
MEG Internal Contact Resource provider Minerals, Energy and Groundwater Division
External Contact
- Topic category
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- Geoscientific information
Extent
))
Temporal extent
- Time period
- 2022-03-20T00:00:00 2022-06-23T00:00:00
- 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.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Data centre
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NCI
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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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- Feature type
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grid
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- Place
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Australia
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- Place
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TAS
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- Project
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survey 5020
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- Theme
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GADDS2.0
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- Theme
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radiometrics
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- Theme
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NASVD
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- Theme
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thorium
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- Theme
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uranium
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- Theme
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potassium
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- Theme
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dose rate
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- Theme
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total dose
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- Theme
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rate
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- Theme
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airborne digital data
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- Theme
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geophysical survey
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- Theme
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rad
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- Theme
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K
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- Theme
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Th
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- Theme
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U
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- Theme
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gamma-ray
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- Theme
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spectrometry
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- Theme
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raster
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- Theme
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grid
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- Keywords
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Published_External
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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
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4.0
- Access constraints
- License
- Use constraints
- License
- Other constraints
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Commonwealth of Australia (Geoscience Australia) and Mineral Resources Tasmania, Government of Tasmania 2022
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Associated resource
Associated resource
- Association Type
- Operated on by
- Title
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East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid OPeNDAP
Associated resource
Associated resource
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Geoscience Australia
Voice
- OnLine resource
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File available for download in various formats from the GADDS2 portal
The Geophysical Archive Data Delivery System (GADDS2) portal provides HTTP download of geophysics datasets in a number of formats. Point and line datasets are available in NetCDF and ASEG-GDF2. Grid datasets are available in NetCDF, GeoTIFF and ERS.
- Distribution format
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WWW:LINK-1.0-http--link
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- Distributor contact
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Role Organisation / Individual Name Details Distributor National Computational Infrastructure
Voice
- OnLine resource
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East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid file download
File download for East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid
- Distribution format
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WWW:LINK-1.0-http--link
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- OnLine resource
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East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid NCSS
NetCDF Subsetting Service (NCSS) for East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid
- Distribution format
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NCSS
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- OnLine resource
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East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid OPeNDAP
OPeNDAP web service for East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid
- Distribution format
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WWW:LINK-1.0-http--opendap
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- OnLine resource
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East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid WMS
OGC Web Mapping Service (WMS) for East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid
- Distribution format
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OGC:WMS
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- OnLine resource
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East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid WCS
OGC Web Coverage Service (WCS) for East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid
- Distribution format
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OGC:WCS
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Resource lineage
- Statement
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This East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid is an airborne-derived radiometric total dose rate grid for the East Tasmania Magnetic and Radiometric Survey, 2022 survey. The survey was acquired under the project No. 5020 for the geological survey of TAS. The grid has a cell size of degrees (approximately 40m). A total of 57178 line-kilometres of data at a line spacing of 200m were acquired to produce this grid. The total dose rate is due to natural sources of radiation and is computed by adding estimates of cosmic dose at ground level to the terrestrial dose. 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. The terrestrial dose is derived as a linear combination of the filtered K, U and Th grids. 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).
- Hierarchy level
- Dataset
- Description
-
This East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid includes airborne-derived radiometric total dose data for the East Tasmania Magnetic and Radiometric Survey, 2022 survey acquired for the geological survey of TAS
Reference System Information
- Reference system identifier
- EPSG/GDA94 (EPSG:4283)
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/d0244e19-1d2a-4384-a1ed-ce80d28ea42a
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Goodwin, J.
MEG Internal Contact
- Title
-
Geophysical Data Collection - Airborne Geophysics
- Citation identifier
- ddeb0fc4-32e3-4913-80f2-f4249b17a925
- Citation identifier
- 111301
Type of resource
- Resource scope
- Dataset
- Name
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East Tasmania Magnetic and Radiometric Survey, TAS, 2022, (P5020), dose rate - total grid
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/147528
- Date info (Creation)
- 2022-12-02T00:00:00
- Date info (Revision)
- 2022-12-02T00:00:00
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
-
Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551