Data

GSQ Mary Kathleen TotalMagneticIntensity grid geodetic

Geoscience Australia
Geophysical Acquisition & Processing Section
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/143470&rft.title=GSQ Mary Kathleen TotalMagneticIntensity grid geodetic&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/143470&rft.description=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 GSQ Mary Kathleen TotalMagneticIntensity grid geodetic has a cell size of 9e-05 degrees (approximately 10m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2017 by the QLD Government, and consisted of 113387 line-kilometres of data at a line spacing between 50m and 100m, and 50m terrain clearance.Maintenance and Update Frequency: notPlannedStatement: This GSQ Mary Kathleen TotalMagneticIntensity grid geodetic is an airborne-derived Total Magnetic Intensity (TMI) grid for the Isa Region Airborne Magnetic Radiometric and DEM Survey, QLD, 2017 survey. The survey was acquired under the project No. 1292 for the geological survey of QLD. The grid has a cell size of 9e-05 degrees (approximately 10m). The units are in nanoTesla (or nT). A total of 113387 line-kilometres of data at a line spacing between 50m and 100m, and 50m terrain clearance were acquired to produce this grid. Details of the specifications of individual airborne surveys can be found in the Fourteenth Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). This Index is also available online at http://pid.geoscience.gov.au/dataset/79134. Reference: Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).&rft.creator=Geophysical Acquisition & Processing Section &rft.date=2020&rft.coverage=westlimit=139.9489; southlimit=-20.857; eastlimit=140.1131; northlimit=-20.6606; projection=GDA94 (EPSG:4283)&rft.coverage=westlimit=139.9489; southlimit=-20.857; eastlimit=140.1131; northlimit=-20.6606; projection=GDA94 (EPSG:4283)&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=(c) Geological Survey of Queensland 2020&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=EARTH SCIENCES&rft_subject=NCI&rft_subject=Earth sciences&rft_subject=geophysics&rft_subject=grid&rft_subject=Australia&rft_subject=QLD&rft_subject=survey 1292&rft_subject=GADDS2.0&rft_subject=TMI&rft_subject=magnetics&rft_subject=magnetism&rft_subject=palaeomagnetism&rft_subject=airborne digital data&rft_subject=geophysical survey&rft_subject=mag&rft_subject=total magnetic intensity&rft_subject=raster&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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Creative Commons Attribution 4.0 International Licence
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Creative Commons Attribution 4.0 International Licence

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4.0

http://creativecommons.org/licenses/

(c) Geological Survey of Queensland 2020

Australian Government Security ClassificationSystem

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Brief description

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 GSQ Mary Kathleen TotalMagneticIntensity grid geodetic has a cell size of 9e-05 degrees (approximately 10m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2017 by the QLD Government, and consisted of 113387 line-kilometres of data at a line spacing between 50m and 100m, and 50m terrain clearance.

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Maintenance and Update Frequency: notPlanned
Statement: This GSQ Mary Kathleen TotalMagneticIntensity grid geodetic is an airborne-derived Total Magnetic Intensity (TMI) grid for the Isa Region Airborne Magnetic Radiometric and DEM Survey, QLD, 2017 survey. The survey was acquired under the project No. 1292 for the geological survey of QLD. The grid has a cell size of 9e-05 degrees (approximately 10m). The units are in nanoTesla (or nT). A total of 113387 line-kilometres of data at a line spacing between 50m and 100m, and 50m terrain clearance were acquired to produce this grid. Details of the specifications of individual airborne surveys can be found in the Fourteenth Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). This Index is also available online at http://pid.geoscience.gov.au/dataset/79134. Reference: Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).

Created: 07 03 2020

Issued: 07 03 2020

Modified: 05 07 2021

Data time period: 10 07 2017 to 30 04 2018

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140.1131,-20.6606 140.1131,-20.857 139.9489,-20.857 139.9489,-20.6606 140.1131,-20.6606

140.031,-20.7588

text: westlimit=139.9489; southlimit=-20.857; eastlimit=140.1131; northlimit=-20.6606; projection=GDA94 (EPSG:4283)

Subjects
Australia | EARTH SCIENCES | Earth sciences | GADDS2.0 | NCI | Published_External | QLD | TMI | airborne digital data | geophysical survey | geophysics | geoscientificInformation | grid | mag | magnetics | magnetism | palaeomagnetism | raster | survey 1292 | total magnetic intensity |

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Other Information
The Geophysical Archive Data Delivery System (GADDS2) portal provides HTTP download of geophysics datasets in a number of formats. Point and line datasets are available in NetCDF and ASEG-GDF2. Grid datasets are available in NetCDF, GeoTIFF and ERS. (File available for download in various formats from the GADDS2 portal)

uri : https://portal.ga.gov.au/persona/gadds

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