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Comparisons of total magnetic intensity grids, combined using Gridmerge, with two independent datasets

Created 17/10/2025

Updated 17/10/2025

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During 2000/2001 a new automatic method of merging gridded airborne magnetic data was developed by Geoscience Australia. This involves considering all the grids at once, and treating the requirement that they match together in the best possible way as a single inverse problem. Both `DC' and low-order polynomials can be applied to grids during the process. The program Gridmerge undertakes these tasks, as an independent entity within the Intrepid geophysical processing system. Regional compilations of airborne magnetic data (from the Yilgarn area of Western Australia, the Tanami-Arunta area of the Northern Territory, the Curnamona region of South Australia and New South Wales and all of Western Australia) are used to compare the results of Gridmerge with the test datasets.

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Title Comparisons of total magnetic intensity grids, combined using Gridmerge, with two independent datasets
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/1c4ec60b-49b9-42b3-ac05-34cb7bae01ce
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Comparisons of total magnetic intensity grids, combined using Gridmerge, with two independent datasets". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/comparisons-of-total-magnetic-intensity-grids-combined-using-gridmerge-with-two-independent-dat