• NSW Geoscience Metadata
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NSW Iso-grav first vertical derivative (1VD)

Greyscale image of first vertical derivative (1VD) of isostatic residual gravity (Iso-grav). The 1VD filter shows the rate of change in the isostatic gravity data. Darker tones indicate lower values and lighter tones represent higher values.


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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S
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W


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/224ddb86-a6b0-4016-83b2-a53d53406995

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/224ddb86-a6b0-4016-83b2-a53d53406995

Date info (Revision)
2025-05-09T09:00:06
Date info (Creation)
2020-09-11T15:02:05

Metadata standard

Title
ISO 19115:2003/19139
Edition
1.0
 
 

Overviews

Isostatic_gravity_first_vertical_derivative_1vd.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

Not available


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