Full description
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 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 terrestrial dose rate grid.This Duketon total count grid geodetic has a cell size of 0.00083 degrees (approximately 87m) and shows the terrestrial dose rate of the Duketon, WA, 1994. The data used to produce this grid was acquired in 1994 by the WA Government, and consisted of 47160 line-kilometres of data at 400m line spacing and 80m terrain clearance.
Lineage
Maintenance and Update Frequency: notPlanned
Statement: This Duketon total count grid geodetic is an airborne-derived radiometric terrestrial dose rate grid for the Duketon, WA, 1994 survey. The survey was acquired under the project No. 613 for the geological survey of WA. The grid has a cell size of 0.00083 degrees (approximately 87m). A total of 47160 line-kilometres of data at a line spacing of 400m were acquired to produce this grid. The terrestrial dose rate grid 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).
Created: 07 03 2020
Issued: 07 03 2020
Modified: 06 07 2021
Data time period: 10 02 1994 to 18 03 1994
text: westlimit=121.4876; southlimit=-28.0121; eastlimit=123.0117; northlimit=-26.9879; projection=AGD66 (EPSG:4202)
Subjects
Australia |
EARTH SCIENCES |
Earth sciences |
GADDS2.0 |
K |
NASVD |
NCI |
Published_External |
Th |
U |
WA |
airborne digital data |
dose |
dose rate |
gamma-ray |
geophysical survey |
geophysics |
geoscientificInformation |
grid |
potassium |
rad |
radiometrics |
raster |
rate |
spectrometry |
survey 613 |
thorium |
uranium |
User Contributed Tags
Login to tag this record with meaningful keywords to make it easier to discover
Other Information
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. (File available for download in various formats from the GADDS2 portal)
url :
https://portal.ga.gov.au/persona/gadds
File download for Duketon total count grid geodetic (Duketon total count grid geodetic file download)
NetCDF Subsetting Service (NCSS) for Duketon total count grid geodetic (Duketon total count grid geodetic NCSS)
OPeNDAP web service for Duketon total count grid geodetic (Duketon total count grid geodetic OPeNDAP)
OGC Web Mapping Service (WMS) for Duketon total count grid geodetic (Duketon total count grid geodetic WMS)
OGC Web Coverage Service (WCS) for Duketon total count grid geodetic (Duketon total count grid geodetic WCS)
Duketon total count grid geodetic NCSS
Duketon total count grid geodetic OPeNDAP
Duketon total count grid geodetic WMS
Duketon total count grid geodetic WCS
Identifiers
- URL : pid.geoscience.gov.au/dataset/ga/141763
- global : a0c3460a-48bc-4ef1-ba1f-e2ad886a879d
