Radiometric uranium equivalent grid of South Kimberley, WA, 2008 survey
Authors / CoAuthors
Geophysical Acquisition & Processing Section
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.
This radiometric uranium grid has a cell size of 0.000833 degrees (approximately 90m) and shows uranium element concentration of the South Kimberley, WA, 2008 survey. The data used to produce this grid was acquired in 2008 by the WA Government, and consisted of 166589 line-kilometres of data at 400m line spacing and 60m terrain clearance.
Australian Government Security ClassificationSystem
Classification - unclassified
Creative Commons Attribution 4.0 International Licence
Access - license
Use - license
This rWA1149uM.nc grid is an airborne-derived radiometric uranium equivalent grid for the South Kimberley, WA, 2008 survey. The survey was acquired under the project No. 1149 for the geological survey of WA. The grid has a cell size of 0.000833 degrees (approximately 90m). A total of 166589 line-kilometres of data at a line spacing of 400m were acquired to produce this grid. To constrain long wavelengths in the grid, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey grid (Milligan et al., 2009). This survey grid is essentially levelled to AWAGS. 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. Further up to date information about individual surveys can also be obtained online from the Airborne Surveys Database at http://www.ga.gov.au/oracle/argus/.
The original grid was converted from ERMapper (.ers) format to netCDF4_classic format using GDAL1.11.1. The main purpose of this conversion is to enable access to the data by relevant open source tools and software. The netCDF grid was created on 2016-08-29T10:51:42, 2013-05-03T00:00:00 and has its y-axis indexed Southward-positive.
Milligan, P.R., Minty, B.R.S., Richardson, M. & Franklin, R., 2009. The Australia-wide Airborne Geophysical Survey accurate continental magnetic coverage. Preview, No. 138, p. 1-128.
Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).
Geophysical Data Collection - Airborne Geophysics
UUID - ddeb0fc4-32e3-4913-80f2-f4249b17a925,
eCat ID - 111301
WGS 84 (geocentric) (EPSG:4328)
Downloads and Links
Digital Object Identifier for dataset 13987538-2ba0-41e6-acb2-44878afefc70
NetCDF file on NCI filesystem for dataset 13987538-2ba0-41e6-acb2-44878afefc70
THREDDS catalog page for dataset 13987538-2ba0-41e6-acb2-44878afefc70
NCSS for dataset 13987538-2ba0-41e6-acb2-44878afefc70
NetCDF file download via HTTP for dataset 13987538-2ba0-41e6-acb2-44878afefc70
Zipped ERS file download via HTTP for dataset 13987538-2ba0-41e6-acb2-44878afefc70
OPeNDAP service for dataset 13987538-2ba0-41e6-acb2-44878afefc70
WCS for dataset 13987538-2ba0-41e6-acb2-44878afefc70
WMS for dataset 13987538-2ba0-41e6-acb2-44878afefc70
Australian Geophysical Archive Data Delivery System
This rWA1149uM.nc grid includes airborne-derived radiometric uranium equivalent data for the South Kimberley, WA, 2008 survey acquired for the geological survey of WA