• 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

Custodian

Geological Survey of NSW - Email MinView Information
Topic category
  • Geoscientific information
N
S
E
W


Keywords (Theme)
  • 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

Custodian

Geological Survey of NSW - Email MinView Information

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


Keywords

Geophysics Gravity Isostatic Bouger

Provided by

Share on social sites

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •