• NSW Geoscience Metadata
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NSW Bouguer Gravity

Pseudocolour image of 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).


Attention: Please ensure your version of the NSW gravity merges contains the date ‘2024-10-30’ in their filename. An update was made to remedy location errors in the initial release. Apologies for any inconvenience.

Simple

Identification info

Date (Revision)
2025-05-09
Status
Completed

Custodian

Geological Survey of NSW - Email MinView Information
Topic category
  • Geoscientific information
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Keywords (Theme)
  • Geophysics
  • Gravity
  • Isostatic Bouger

Distribution Information

Distribution format
OnLine resource
Download ERS file ( Air Only)

OnLine resource
Download TIF file (Air only)

Resource lineage

Statement
This edition of the NSW statewide gravity merge is a compilation of best available airborne and ground data, comprising roughly 80% airborne and 20% ground. AIR1027 and AIR1030 comprise the airborne data, with the ground data clipped from Geoscience Australia’s ANGD dataset. These data were gridded with a cell size of 500x500 metres before being corrected for isostasy following the method outlined in Spence and Musgrave (2006). The units for the data are μms⁻². This product represents the 2024 update to the NSW statewide gravity merge. This version incorporates the recently acquired statewide airborne dataset. It will represent a platform for future iterative updates. MATTHEWS S.J. 2024. New South Wales Statewide gravity merge, version 2.0 [Digital Dataset]. Geological Survey of New South Wales, Department of Primary Industries and Regional Development NSW, Maitland MATTHEWS S.J. 2020. New South Wales Statewide gravity merge, version 1.0 [Digital Dataset]. Geological Survey of New South Wales, Department of Regional NSW, Maitland
Hierarchy level
Dataset

Reference System Information

Reference system identifier
EPSG:4326

Reference System Information

Reference system identifier
CRS:84

Metadata

Metadata identifier
urn:uuid/ce076e1f-13cb-4c7d-a4f5-aa4eec0791cf

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/ce076e1f-13cb-4c7d-a4f5-aa4eec0791cf

Date info (Revision)
2025-05-09T09:36:09
Date info (Creation)
2020-09-11T15:02:05

Metadata standard

Title
ISO 19115:2003/19139
Edition
1.0
 
 

Overviews

Bouguer_gravity.png

Spatial extent

N
S
E
W


Keywords

Geophysics Gravity Isostatic Bouger

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

Associated resources

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