Kombolgie VTEM AEM Survey: Inversion Report and Data Package

Brief description

Data acquired as part of the Kombolgie VTEMTM Airborne Electromagnetic Survey have been inverted using a layered earth inversion algorithm. Interpretation products have been derived from the inversion results. The inversion results and derived products have been released by Geoscience Australia as a digital data package. The survey was funded under the Australian Government's Onshore Energy Security Program, and was managed and interpreted by Geoscience Australia's Airborne Electromagnetic Acquisition and Interpretation Project. The Kombolgie survey area, in the Pine Creek Orogen of the Northern Territory, covered sections of the Cobourg Peninsula, Junction Bay, Alligator River, Milingimbi, Mount Evelyn, Katherine, and Urapunga 1:250 000 map sheets. It covered a total of 8 800 line km and an area of 32 000 km2. The data were acquired under contract by Geotech Airborne Pty. Ltd. using its VTEMTM helicopter-borne electromagnetic system. The inversions were carried out using the GA-LEI layered-earth inversion software developed at Geoscience Australia. Products include the layer conductivities, depth and elevation slices, and sections. The products are in digital form in both point-located and gridded formats. They are available for download from the Geoscience Australia website.

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Maintenance and Update Frequency: unknown

Statement: The AEM survey data were acquired and processed by the airborne geophysical survey contractors Geotech Airborne Pty Ltd. Details on the acquisition and processing are available in Carter et al. (2009), which is included in the dataset. The data was then inverted using the GA-LEI. References: Carter, S., Baron-Hay, S., Combrinck, M., and Moreton, M., 2009. Survey and Logistics Report on a helicopter borne Versatile Time Domain Electromagnetic (VTEM) Survey on the Pine Creek (Kombolgie) project area, Northern Territory, for Geoscience Australia.