The world’s largest high-resolution airborne geophysical and terrain imaging program, the Gawler Craton Airborne Survey, is setting the foundation for the next generation of scientific data, informing resource exploration in South Australia.
The survey was undertaken by the Government of South Australia in partnership with Geoscience Australia. The survey data acquisition, processing and data delivery is complete. Additional value-added, enhanced data packages and seamless merged grid products are now available for download.
The new data
- Sixteen packages (one for each GCAS survey region) containing value-added data, magnetic source models and CSIRO reports, as well as contractor supplied data and operations reports.
Block data packages
- Merged data packages of the magnetic, radiometric and elevation data to provide seamless, internally consistent sets of gridded data.
Merged data packages
- Gawler Craton airborne survey imagery web service
- The Gawler Craton Airborne Survey 2017–2021: final report (Report Book 2021/00017) provides technical information on survey planning, stakeholder engagement, quality control, data processing and the final survey data products. This report is an excellent companion publication to any of the data downloads.
About the survey
The survey has captured approximately 1,660,000 line kilometres of new magnetic, radiometric and digital elevation data over an area of about 295,000 km2. This new data surpasses the previous patchwork of historical surveys and provides the basis for a single, internally consistent dataset that will be fundamental in reinterpreting the geological structure of the Gawler Craton.
The geophysical data was captured by four geophysical contractors, using fixed-wing aircraft flying approximately 60 m above the ground along flight lines spaced 200 m apart. Survey acquisition was completed in June 2019.