Full 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 GSNSW Marulan Mossvale magnetic grid geodetic has a cell size of 0.00049 degrees (approximately 50m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 1998 by the NSW Government, and consisted of 1886 line-kilometres of data at 250m line spacing and 60m terrain clearance.
Lineage
Maintenance and Update Frequency: notPlanned
Statement: This GSNSW Marulan Mossvale magnetic grid geodetic is an airborne-derived Total Magnetic Intensity (TMI) grid for the Marulan-Mossvale, NSW, 1998 survey. The survey was acquired under the project No. 747 for the geological survey of NSW. The grid has a cell size of 0.00049 degrees (approximately 50m). The units are in nanoTesla (or nT). A total of 1886 line-kilometres of data at a line spacing of 250m and 60m 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: 06 07 2021
Data time period: 12 1998 to 30 12 1998
text: westlimit=149.996; southlimit=-34.7923; eastlimit=150.4943; northlimit=-34.5643; projection=WGS84 (EPSG:4326)
Subjects
Australia |
EARTH SCIENCES |
Earth sciences |
GADDS2.0 |
NCI |
NSW |
Published_External |
TMI |
airborne digital data |
geophysical survey |
geophysics |
geoscientificInformation |
grid |
mag |
magnetics |
magnetism |
palaeomagnetism |
raster |
survey 747 |
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 GSNSW Marulan Mossvale magnetic grid geodetic (GSNSW Marulan Mossvale magnetic grid geodetic file download)
NetCDF Subsetting Service (NCSS) for GSNSW Marulan Mossvale magnetic grid geodetic (GSNSW Marulan Mossvale magnetic grid geodetic NCSS)
OPeNDAP web service for GSNSW Marulan Mossvale magnetic grid geodetic (GSNSW Marulan Mossvale magnetic grid geodetic OPeNDAP)
OGC Web Mapping Service (WMS) for GSNSW Marulan Mossvale magnetic grid geodetic (GSNSW Marulan Mossvale magnetic grid geodetic WMS)
OGC Web Coverage Service (WCS) for GSNSW Marulan Mossvale magnetic grid geodetic (GSNSW Marulan Mossvale magnetic grid geodetic WCS)
GSNSW Marulan Mossvale magnetic grid geodetic NCSS
GSNSW Marulan Mossvale magnetic grid geodetic OPeNDAP
GSNSW Marulan Mossvale magnetic grid geodetic WMS
GSNSW Marulan Mossvale magnetic grid geodetic WCS
Identifiers
- URL : pid.geoscience.gov.au/dataset/ga/142092
- global : f88f1c94-3f1d-4e30-9b5c-cc9f718006ab
