Data

Hann River Walsh magnetic grid geodetic

Geoscience Australia
Geophysical Acquisition & Processing Section
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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://rhe-ecat-prod01.prod.lan:8080/geonetwork/srv/eng/search?uuid=a0dac00c-08a9-4a26-b81e-56d1450d3a3a&rft.title=Hann River Walsh magnetic grid geodetic&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/143364&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 Hann River Walsh magnetic grid geodetic has a cell size of 0.00083 degrees (approximately 91m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 1991 by the QLD Government, and consisted of 61810 line-kilometres of data at 400m line spacing and 100m terrain clearance.Maintenance and Update Frequency: notPlannedStatement: This Hann River Walsh magnetic grid geodetic is an airborne-derived Total Magnetic Intensity (TMI) grid for the Hann River-Walsh merge, 1991 survey. The survey was acquired under the project No. 1346 for the geological survey of QLD. The grid has a cell size of 0.00083 degrees (approximately 91m). The units are in nanoTesla (or nT). A total of 61810 line-kilometres of data at a line spacing of 400m and 100m 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=142.4247; southlimit=-16.5795; eastlimit=144.2322; northlimit=-14.9436; projection=AGD66 (EPSG:4202)&rft.coverage=westlimit=142.4247; southlimit=-16.5795; eastlimit=144.2322; northlimit=-14.9436; projection=AGD66 (EPSG:4202)&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/&rft_rights=(c) Commonwealth of Australia (Geoscience Australia) 2020&rft_rights=Australian Government Security ClassificationSystem https://www.protectivesecurity.gov.au/Pages/default.aspx&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 1346&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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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 Hann River Walsh magnetic grid geodetic has a cell size of 0.00083 degrees (approximately 91m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 1991 by the QLD Government, and consisted of 61810 line-kilometres of data at 400m line spacing and 100m terrain clearance.

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Maintenance and Update Frequency: notPlanned
Statement: This Hann River Walsh magnetic grid geodetic is an airborne-derived Total Magnetic Intensity (TMI) grid for the Hann River-Walsh merge, 1991 survey. The survey was acquired under the project No. 1346 for the geological survey of QLD. The grid has a cell size of 0.00083 degrees (approximately 91m). The units are in nanoTesla (or nT). A total of 61810 line-kilometres of data at a line spacing of 400m and 100m 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: 15 06 1991 to 31 10 1991

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144.2322,-14.9436 144.2322,-16.5795 142.4247,-16.5795 142.4247,-14.9436 144.2322,-14.9436

143.32845,-15.76155

text: westlimit=142.4247; southlimit=-16.5795; eastlimit=144.2322; northlimit=-14.9436; projection=AGD66 (EPSG:4202)

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 1346 | 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)

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

File download for Hann River Walsh magnetic grid geodetic (Hann River Walsh magnetic grid geodetic file download)

url : https://thredds.nci.org.au/thredds/fileServer/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc

NetCDF Subsetting Service (NCSS) for Hann River Walsh magnetic grid geodetic (Hann River Walsh magnetic grid geodetic NCSS)

url : https://thredds.nci.org.au/thredds/ncss/grid/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc/dataset.html

OPeNDAP web service for Hann River Walsh magnetic grid geodetic (Hann River Walsh magnetic grid geodetic OPeNDAP)

url : https://thredds.nci.org.au/thredds/dodsC/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc.html

OGC Web Mapping Service (WMS) for Hann River Walsh magnetic grid geodetic (Hann River Walsh magnetic grid geodetic WMS)

url : https://thredds.nci.org.au/thredds/wms/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc?service=WMS&version=1.3.0&request=GetCapabilities

OGC Web Coverage Service (WCS) for Hann River Walsh magnetic grid geodetic (Hann River Walsh magnetic grid geodetic WCS)

url : https://thredds.nci.org.au/thredds/wcs/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc?service=WCS&version=1.0.0&request=GetCapabilities

Hann River Walsh magnetic grid geodetic NCSS

url : https://thredds.nci.org.au/thredds/ncss/grid/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc/dataset.html

Hann River Walsh magnetic grid geodetic OPeNDAP

url : https://thredds.nci.org.au/thredds/dodsC/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc.html

Hann River Walsh magnetic grid geodetic WMS

url : https://thredds.nci.org.au/thredds/wms/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc?service=WMS&version=1.3.0&request=GetCapabilities

Hann River Walsh magnetic grid geodetic WCS

url : https://thredds.nci.org.au/thredds/wcs/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/GA/grid/P1346/P1346-grid-tmi.nc?service=WCS&version=1.0.0&request=GetCapabilities

Identifiers
ACN 633 798 857