Radiometrics Filtered K percent Image - 2015

Low-pass filtered K element concentration (percent K). The Radiometric Map of Australia dataset comprises gridsof potassium (K), uranium (U) and thorium (Th) element concentrations, and derivatives of these grids. This third edition was derived by seamlessly merging 45 new survey grids with the Second Edition Radiometric Map of Australia (Minty et al., 2010). Details of the specifications of individual airborne surveys can be found in the 2014 Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). Matching of the grids in the database was achieved using a program called Gridmerge, originally developed within Geoscience Australia and has now been commercialised. This program was used to merge 45 new surveys to the Second Edition Radiometric Map of Australia. The second edition merged over 550 individual grids to create the compilation (Minty et al., 2009), and the Australia-wide Airborne Geophysical Survey (AWAGS) airborne radiometric data was used to control the base levels of those survey grids which overlapped the AWAGS data (Milligan et al., 2009). As the second edition was used as a base grid for the Gridmerge operation the new Third Edition is essentially levelled to AWAGS. Filtering: Potassium, uranium, thorium and dose rate grids are available in both filtered and unfiltered versions. The low-pass filtering was achieved by applying a 7-point, degree-3 Savitzky-Golay filter (Savitzky and Golay, 1964) to each of the original survey grids prior to grid merging.

Simple

Status
Point of contact
Role Organisation Electronic mail address
Point of contact

Geoscience Australia

clientservices@ga.gov.au

Spatial representation type
Topic category
  • Geoscientific information

Extent

Extent

N
S
E
W




Maintenance and update frequency
As needed
Theme

  • radiometrics

  • geophysics

  • geophysical survey

  • airborne digital data

  • grid

  • Australia

Place

  • World

Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research

  • Earth Sciences

Resource constraints

Use limitation

https://creativecommons.org/licenses/by/4.0

Access constraints
Licence Unrestricted
Use constraints
Licence Unrestricted
Language
English
Character encoding
UTF8
OnLine resource

geophys:radmap_v3_2015_filtered_pctk_x

Radiometrics Filtered K percent Image - 2015

Hierarchy level
Dataset
Reference system identifier
EPSG:4283

Reference system identifier
CRS:84

Metadata

Metadata identifier
urn:uuid/147cfa87844daa1d994f5e48023d148072c5efab

Language
English
Character encoding
anyValidURI
Contact
Role Organisation Electronic mail address
Point of contact

Geoscience Australia

clientservices@ga.gov.au

Point of contact

Type of resource

Resource type
Dataset
Metadata linkage

https://portal.auscope.org.au/geonetwork/srv/api/records/147cfa87844daa1d994f5e48023d148072c5efab

Date info (Revision)
2026-10-20T02:44:30.393921Z
Date info (Creation)
2026-10-23T00:02:38

Metadata standard

Title

ISO 19115-3

 
 

Overviews

Spatial extent

Keywords

Australia airborne digital data geophysical survey geophysics grid radiometrics
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research

Earth Sciences


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