Data

Total Magnetic Intensity Grid of Australia 2019 - seventh edition - 80 m

AuScope
Client Services (Point of contact) Geoscience Australia (Associated with)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://portal.auscope.org/geonetwork/srv/api/records/177abe2c-9efe-4fd2-a66e-0f1e099c3047&rft.title=Total Magnetic Intensity Grid of Australia 2019 - seventh edition - 80 m&rft.identifier=f54ef7f968673083870aa7de04feb946a018a961&rft.publisher=AuScope&rft.description=Total magnetic intensity (TMI) data measures variations in the intensity of the Earth 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 2019 Total magnetic Intensity (TMI) grid of Australia has a grid cell size of ~3 seconds of arc (approximately 80 m). This grid only includes airborne-derived TMI data for onshore and near-offshore continental areas. Since the sixth edition was released in 2015, data from 234 new surveys have been added to the database, acquired mainly by the State and Territory Geological Surveys. The new grid was derived from a re-levelling of the national magnetic grid database. The survey grids were levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS), which serves as a baseline to constrain long wavelengths in the final grid. It is estimated that 33 500 000 line-kilometres of survey data were acquired to produce the 2019 grid data, about 2 000 000 line-kilometres more than for the previous edition.Maintenance and Update Frequency: asNeeded&rft.creator=Anonymous&rft.date=2026&rft.coverage=westlimit=105.99958335; southlimit=-43.930099090841246; eastlimit=154.66347005; northlimit=-9.026495250948122&rft.coverage=westlimit=105.99958335; southlimit=-43.930099090841246; eastlimit=154.66347005; northlimit=-9.026495250948122&rft_rights=https://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=Airborne Digital Data&rft_subject=earth Sciences&rft_subject=TMI&rft_subject=Australia&rft_subject=Magnetics&rft_subject=grid&rft_subject=geophysics&rft_subject=NCI&rft_subject=World&rft_subject=EARTH SCIENCES&rft.type=dataset&rft.language=English Access the data
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Total magnetic intensity (TMI) data measures variations in the intensity of the Earth 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 2019 Total magnetic Intensity (TMI) grid of Australia has a grid cell size of ~3 seconds of arc (approximately 80 m). This grid only includes airborne-derived TMI data for onshore and near-offshore continental areas. Since the sixth edition was released in 2015, data from 234 new surveys have been added to the database, acquired mainly by the State and Territory Geological Surveys. The new grid was derived from a re-levelling of the national magnetic grid database. The survey grids were levelled to each other, and to the Australia Wide Airborne Geophysical Survey (AWAGS), which serves as a baseline to constrain long wavelengths in the final grid. It is estimated that 33 500 000 line-kilometres of survey data were acquired to produce the 2019 grid data, about 2 000 000 line-kilometres more than for the previous edition.

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154.66347,-9.0265 154.66347,-43.9301 105.99958,-43.9301 105.99958,-9.0265 154.66347,-9.0265

130.3315267,-26.478297170895

text: westlimit=105.99958335; southlimit=-43.930099090841246; eastlimit=154.66347005; northlimit=-9.026495250948122

Subjects
Airborne Digital Data | Australia | Earth Sciences | Magnetics | NCI | TMI | World | earth Sciences | geophysics | geoscientificInformation | grid |

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Total Magnetic Intensity Grid of Australia 2019 - seventh edition - 80 m (geophys:magmap_v7_2019_TMI)

url : https://services.ga.gov.au/gis/geophysical-grids/ows?SERVICE=WMS&

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  • global : f54ef7f968673083870aa7de04feb946a018a961
ACN 633 798 857