NSW Geoscience Metadata
NSW Isostatic Gravity
Pseudocolour image of isostatic residual Bouguer gravity with a histogram-equalised colour stretch. Cooler colours indicate lower Bouguer gravity values and warmer colours represent higher values. The intensity layer is the Bouguer gravity greyscale image enhanced by a 3x3 sun filter with the sun illumination set at 45 degrees elevation and 90 degrees azimuth. Bouguer gravity compensates for variations in latitude, 'free-air' elevation and Bouguer correction (assuming a crustal density of 2.67 T/m³). The isostatic correction removes the effect of variations in the thickness of the Earth’s crust due to changes in topography. The isostatic effect is particularly strong under the Great Dividing Range.
Simple
Identification info
- Date (Revision)
- 2020-07-01
- Status
- Completed
- Topic category
-
- Geoscientific information
N
S
E
W
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- Keywords (Theme)
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- Geophysics
- Gravity
- Isostatic Bouger
Distribution Information
- Distribution format
-
- OnLine resource
- Download ERS file
- OnLine resource
- Download located data file
- OnLine resource
- Download TIF file
Resource lineage
- Statement
- The spherical cap Bouguer gravity (ANGD) was downloaded from GADDS in March 2020 and clipped to NSW. These data were gridded with a cell size of 500x500 metres before being corrected for isostasy following the method outlined in Spencer and Musgrave (2006). The units for the data are μms⁻².
- Hierarchy level
- Dataset
Reference System Information
- Reference system identifier
- EPSG:4326
Reference System Information
- Reference system identifier
- CRS:84
Metadata
- Metadata identifier
- urn:uuid/8ffd831706d684a98acb123153cd2065cbbd9d3d
- Language
- English
- Character encoding
- UTF8
Type of resource
- Resource scope
- Dataset
- Metadata linkage
- https://geonetwork.geoscience.nsw.gov.au/geonetwork/srv/api/records/8ffd831706d684a98acb123153cd2065cbbd9d3d
- Date info (Revision)
- 2024-05-09T16:52:52
- Date info (Creation)
- 2020-09-11T15:02:05
Metadata standard
- Title
- ISO 19115:2003/19139
- Edition
- 1.0
Overviews
thumbnail
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available