c4c8fee4-a76b-4344-b6e2-33864c979c20 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T09:17:57 creation ISO 19115 2016 Australian National Magnetic Data Collection c4c8fee4-a76b-4344-b6e2-33864c979c20 This data collection are comprised of magnetic surveys acquired across Australia by Commonwealth, State and Northern Territory governments and the private sector with project management and quality control undertaken by Geoscience Australia. Magnetic surveying is a geophysical method for measuring the intensity (or strength) of the Earth's magnetic field, which includes the fields associated with the Earth's core and the magnetism of rocks in the Earth's crust. Measuring the magnetism of rocks, in particular, provides a means for the direct detection of several different types of mineral deposits and for geological mapping. The magnetism of rocks depends on the volume, orientation and distribution of their constituent magnetic minerals (namely magnetite, monoclinic pyrrhotite, maghaemite and ilmenite). The instrument used in magnetic surveys is a magnetometer, which can measure the intensity of the magnetic field in nanoteslas (nT). Magnetic surveys in this collection have been acquired using aircraft or ship-mounted magnetometers and are a non-invasive method for investigating subsurface geology. {"type": "Polygon", "coordinates": [[[112.92, -54.75], [159.11, -54.75], [159.11, -9.2402], [112.92, -9.2402], [112.92, -54.75]]]} 112.92 159.11 -54.75 -9.2402 Australia-wide Airborne Geophysical Survey (AWAGS) GEOPHYSICS Geophysics HVC HVC - High Value Collection HVC_144635 Published_External airborne geomagnetism gridded data line data magnetic anomaly magnetic field magnetics magnetism point located data potential field ship-borne total magnetic intensity (TMI) Digital Object Identifier (DOI) documentDigital HTML