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Total Magnetic Intensity (TMI) Grid of Australia 2019 - seventh edition Enhanced Products Package

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Created 13/01/2025

Updated 13/01/2025

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Several products were produced from the Total Magnetic Intensity (TMI) Grid of Australia 2019, seventh edition (eCat ID 131505). The grid was found to include 3 extreme, high-amplitude cultural data spikes from current and historical aluminium smelters in Victoria and Tasmania. Also, 3 data spikes of unknown origin were located in the Hunter region of NSW. These 6 data spikes were removed from the gridded data. The following products were produced from the grid with the data spikes removed:

Total Magnetic Intensity (TMI) edited grid (.ers) Variable Reduction to Pole (VRTP) grid (.ers) First Vertical Derivative (1VD) grid (.ers) Half Vertical Derivative (05VD) grid (.ers) Pseudo-Gravity (PGrav) grid (.ers) Pseudo-Gravity, Total Horizontal Derivative (THD) grid (.ers) Susceptibility (Sus) grid (.ers) Variable Vertical Gradient (VBzz) grid (.ers) Analytic Signal (AS; Total Gradient) grid (.ers) Tilt Angle (Tilt; Phase Map) grid (.ers) Tilt Angle (Tilt; Phase Map), Total Horizontal Derivative (THD) grid (.ers) Upward Continuation (UC) Residual (Res) Filters (0 to 100 km; 12 grids) Mutliscale Edge Detection Polygons (for each MGA zone; .shp) Analytic Signal Phase Polygons (.shp) GeoTiff Images (of all grids; .tif)

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Title Total Magnetic Intensity (TMI) Grid of Australia 2019 - seventh edition Enhanced Products Package
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/d0fb6dd0-8b4a-40e3-aaa2-31fa36dcd5b2
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 01/01/2019
Geospatial Coverage {"type": "Polygon", "coordinates": [[[112.0, -44.0], [154.0, -44.0], [154.0, -9.0], [112.0, -9.0], [112.0, -44.0]]]}
Data Portal data.gov.au