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GSSA p1280tmig

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Created 20/01/2025

Updated 20/01/2025

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Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data 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 GSSA p1280tmig has a cell size of 0.00042 degrees (approximately 44m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2017 by the SA Government, and consisted of 109753 line-kilometres of data at 200m line spacing and 60m terrain clearance.

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Title GSSA p1280tmig
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/f16ae5cf-88c7-47a7-b56a-056e62d7e006
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 13/02/2017 - 21/08/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
Data Portal Data.gov.au