Product catalogue
National Gravity and Magnetic Derivatives Customised for Data Analysis and Machine Learning
<div><strong>Purpose</strong></div><div>This package comprises a set of 86 thematic grids (rasters) derived from national coverages of gravity and magnetic survey data. These datasets provide valuable information about the distribution of geological features, physical property variations, and the composition of the Earth's crust. All grids have been resampled to the same cell size, map extent, and projection to allow them to be integrated into predictive mapping and modelling workflows using machine learning. Users can download individual grids or the whole grid package. </div><div> </div><div><strong>Input Data</strong></div><div>The following Australian national datasets were used:</div><div>1. 2019 Australian National Gravity Grids: Free Air Anomaly, Complete Bouguer Anomaly, De-trended Global Isostatic Residual, 400 m cell size (Lane <em>et al</em>., 2020).</div><div>2. Total Magnetic Intensity (TMI) Grid of Australia 2019 - seventh edition Enhanced Products Package (Morse, 2020).</div><div><br></div><div><strong>Processing</strong></div><div>All processing of the national grids were undertaken using Intrepid software. The following was performed on the input data:</div><div>1. The grids were reprojected from GDA94 geodetic to Australian Albers (EPSG 3577). </div><div>2. The grids were aligned to the same grid cell registration point and interpolated to fit within an 80 m cell size using a cubic spline method to ensure that the cell locations for all images are common.</div><div>3. Various Fast Fourier Transforms (FFT) were applied to each grid (see ‘Grids_for_Machine_Learning_dataset_notes.pdf’). </div><div> </div><div><strong>Metadata (all grids)</strong></div><div>· Datum: GDA94</div><div>· Projection: Australian Albers (EPSG 3577)</div><div>· Cell size: 80 m</div><div>· File format: GeoTiff (.tif)</div>
<b>Data is available on request from clientservices@ga.gov.au - Quote eCat# 149130</b> clientservices@ga.gov <b>Data is available on request from clientservices@ga.gov.au - Quote eCat# 149130</b>
Simple
Identification info
- Date (Creation)
- 2024-07-01T20:00:00
- Date (Publication)
- 2024-07-08T07:02:56
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/149130
- Citation identifier
- Digital Object Identifier/https://dx.doi.org/10.26186/149130
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Miller, R.
Internal Contact Author Goodwin, J.
Internal Contact Author Wilford, J.
Internal Contact Author McInnes, D.
External Contact
- Purpose
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Grids created for input into data analysis and machine learning projects. See 'Grids_for_Machine_Learning_dataset_notes.pdf' for a list of all grids.
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Resource provider Minerals, Energy and Groundwater Division
External Contact Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Schroder, I.
MEG Internal Contact
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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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
- Project
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Geophysical Acquisition and Processing Section
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- Keywords
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machine learning
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- Keywords
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grids
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- Keywords
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raster
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- Keywords
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Total Magnetic Intensity
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- Keywords
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TMI
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- Keywords
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gravity
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- Keywords
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Reduction to Pole
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- Keywords
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RTP
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- Keywords
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analytic signal
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- Keywords
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tilt
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- Keywords
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phase map
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- Keywords
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residual
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- Keywords
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upward continuation
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- Keywords
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vertical integral
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- Keywords
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De-trended Global Isostatic Residual
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- Keywords
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DGIR
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- Keywords
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Free-Air Anomaly
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- Keywords
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FAA
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- Keywords
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Complete Bouguer Anomaly
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- Keywords
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horizontal derivative
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- Keywords
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band pass
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- Keywords
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vertical derivative
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- theme.ANZRC Fields of Research.rdf
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Magnetism and palaeomagnetism
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Gravimetrics
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Addressee
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Role Organisation / Individual Name Details User Any
- Use constraints
- License
- Use constraints
- Other restrictions
- Other constraints
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© Commonwealth of Australia (Geoscience Australia) 2024
Resource constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Classification system
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Australian Government Security Classification System
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
- OnLine resource
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Download the document (pdf)
Download the document (pdf)
- Distribution format
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pdf
- File decompression technique
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nil
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Resource lineage
- Statement
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<div>This dataset publication was created by the Geophysical Acquisition and Processing (GAP) and Integrated Geological Mapping (IGM) sections at Geoscience Australia in 2024. Please refer to the release notes (Grids_for_Machine_Learning_dataset_notes.pdf) for a description of how the data were processed.</div>
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/3a953681-9ec4-4f37-a986-b9c0e1b644ea
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Schroder, I.
MEG Internal Contact
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/149130
- Date info (Creation)
- 2024-07-08T06:54:41
- Date info (Revision)
- 2024-07-08T06:54:41
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- http://pid.geoscience.gov.au/dataset/ga/122551