GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

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 Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic is a first vertical derivative of the Total Magnetic Intensity grid for the NSW DMR, Discovery 2000 Area J,Cobar-Nymagee, NSW, 1998.

This grid has a cell size of 0.00049 degrees (approximately 50m). The grid has units of nanoTesla per km (or nT/km). The data used to produce the TMI grid was acquired in 1998 by the NSW Government, and consisted of 46744 line-kilometres of data at 250m line spacing and 60m terrain clearance. A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid.

Simple

Identification info

Date (Creation)
2020-03-07T00:00:00
Date (Publication)
2020-03-07T00:00:00
Date (Revision)
2021-07-06T01:01:14
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/142152

Cited responsible party
Role Organisation / Individual Name Details
Author

Geophysical Acquisition & Processing Section
Status
Completed
Point of contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice
Topic category
  • Geoscientific information

Extent

N
S
E
W


Temporal extent

Time period
1998-12-01T00:00:00 1998-12-31T00:00:00
Maintenance and update frequency
Not planned

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

theme.ANZRC Fields of Research.rdf

  • EARTH SCIENCES

Data centre

  • NCI

Discipline

  • Earth sciences

Discipline

  • geophysics

Feature type

  • grid

Place

  • Australia

Place

  • NSW

Project

  • survey 741

Theme

  • GADDS2.0

Theme

  • magnetics

Theme

  • first vertical derivative

Theme

  • magnetism

Theme

  • palaeomagnetism

Theme

  • airborne digital data

Theme

  • geophysical survey

Theme

  • mag

Theme

  • 1vd

Theme

  • grid

Theme

  • raster

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License
Other constraints

(c) State of New South Wales (Department of Regional New South Wales) 2020

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Associated resource

Association Type
Operated on by
Title

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic NCSS

Website

https://thredds.nci.org.au/thredds/ncss/grid/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/NSW/grid/P741/P741-grid-tmi_1vd.nc/dataset.html

NetCDF Subsetting Service (NCSS) for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Associated resource

Association Type
Operated on by
Title

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic OPeNDAP

Website

https://thredds.nci.org.au/thredds/dodsC/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/NSW/grid/P741/P741-grid-tmi_1vd.nc.html

OPeNDAP web service for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Associated resource

Association Type
Operated on by
Title

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic WMS

Website

https://thredds.nci.org.au/thredds/wms/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/NSW/grid/P741/P741-grid-tmi_1vd.nc?service=WMS&version=1.3.0&request=GetCapabilities

OGC Web Mapping Service (WMS) for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Associated resource

Association Type
Operated on by
Title

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic WCS

Website

https://thredds.nci.org.au/thredds/wcs/iv65/Geoscience_Australia_Geophysics_Reference_Data_Collection/airborne_geophysics/NSW/grid/P741/P741-grid-tmi_1vd.nc?service=WCS&version=1.0.0&request=GetCapabilities

OGC Web Coverage Service (WCS) for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Geoscience Australia

 Voice
OnLine resource

File available for download in various formats from the GADDS2 portal

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.

Distribution format

  • WWW:LINK-1.0-http--link

Distributor contact
Role Organisation / Individual Name Details
Distributor

National Computational Infrastructure

 Voice
OnLine resource

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic file download

File download for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Distribution format

  • WWW:LINK-1.0-http--link

OnLine resource

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic NCSS

NetCDF Subsetting Service (NCSS) for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Distribution format

  • NCSS

OnLine resource

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic OPeNDAP

OPeNDAP web service for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Distribution format

  • WWW:LINK-1.0-http--opendap

OnLine resource

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic WMS

OGC Web Mapping Service (WMS) for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Distribution format

  • OGC:WMS

OnLine resource

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic WCS

OGC Web Coverage Service (WCS) for GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Distribution format

  • OGC:WCS

Resource lineage

Statement

This GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic is a first vertical derivative grid of the Total Magnetic Intensity (TMI) anomaly for the NSW DMR, Discovery 2000 Area J,Cobar-Nymagee, NSW, 1998. The survey was acquired under the project No. 741 for the geological survey of NSW. A total of 46744 line-kilometres of data at a line spacing of 250m and 60m terrain clearance were acquired to produce the TMI grid. A first vertical derivative was calculated by applying a fast Fourier transform (FFT) process to the Total Magnetic Intensity grid of the NSW DMR, Discovery 2000 Area J,Cobar-Nymagee, NSW, 1998 survey to produce this grid. This grid was calculated using an algorithm from the INTREPID Geophysics software package. The processed data are checked by GA geophysicists using standard methods for assessing quality to ensure that the final data are fit-for-purpose. The grid has a cell size of 0.00049 degrees (approximately 50m). The grid has units of nanoTesla per km (or nT/km). The first vertical derivative grid is very helpful for the enhancement of near surface features and structural features such as faults and dykes. 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.


References:

Intrepid Geophysics, http://www.intrepid-geophysics.com;

Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).

Hierarchy level
Dataset
Description

This GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic includes airborne-derived TMI data for the NSW DMR, Discovery 2000 Area J,Cobar-Nymagee, NSW, 1998 acquired for the geological survey of NSW

Reference System Information

Reference system identifier
EPSG/WGS84 (EPSG:4326)

Metadata constraints

Title

Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/7b33374b-b054-4b3e-9407-d46a17c175c8

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice
Point of contact

Manager Client Services
Title

Geophysical Data Collection - Airborne Geophysics

Citation identifier
c6b58f54-102c-19e9-e044-00144fdd4fa6

Citation identifier
74512

Type of resource

Resource scope
Dataset
Name

GSNSW Exploration NSW Area J Cobar Nymagee Part1 magnetic first vd grid geodetic

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/142152

Metadata linkage

http://rhe-ecat-prod01.prod.lan:8080/geonetwork/srv/eng/search?uuid=7b33374b-b054-4b3e-9407-d46a17c175c8

Date info (Creation)
2021-06-17T00:00:00
Date info (Revision)
2021-06-17T00:00:00

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

1vd Earth sciences GADDS2.0 NCI airborne digital data first vertical derivative geophysical survey geophysics grid grid mag magnetics magnetism palaeomagnetism raster survey 741
theme.ANZRC Fields of Research.rdf
EARTH SCIENCES

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Access to the portal

Associated resources

Not available