Product catalogue
East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic
Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected 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 East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic is a complete spherical cap Bouguer anomaly grid for the East Amadeus Gravity Survey, 2012 (P201280). This gravity survey was acquired under the project No. 201280 for the geological survey of NT. The grid has a cell size of 0.00754 degrees (approximately 800m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 7565 gravity stations were acquired to produce this grid.
Simple
Identification info
- Date (Creation)
- 2020-03-09T00:00:00
- Date (Publication)
- 2020-03-09T00:00:00
- Date (Revision)
- 2021-07-05T06:07:55
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/143938
- Cited responsible party
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Role Organisation / Individual Name Details Author Geophysical Acquisition & Processing Section
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
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- Geoscientific information
Extent
))
Temporal extent
- Time period
- 2012-05-30T00:00:00 2012-07-30T00:00:00
- Maintenance and update frequency
- Not planned
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
- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Data centre
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NCI
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- Discipline
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Earth sciences
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- Discipline
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geophysics
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- Feature type
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grid
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- Place
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Australia
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- Place
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NT
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- Project
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survey 201280
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- Theme
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GADDS2.0
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- Theme
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gravity
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- Theme
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spherical cap
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- Theme
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Bouguer
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- Theme
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complete
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- Theme
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ground digital data
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- Theme
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geophysical survey
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- Theme
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grav
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- Theme
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grid
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- Theme
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raster
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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
- Access constraints
- License
- Use constraints
- License
- Other constraints
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(c) Northern Territory of Australia (Northern Territory Geological Survey) 2020
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Associated resource
- Association Type
- Operated on by
- Title
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic NCSS
Associated resource
- Association Type
- Operated on by
- Title
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic OPeNDAP
Associated resource
Associated resource
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Geoscience Australia
Voice
- OnLine resource
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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
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WWW:LINK-1.0-http--link
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- Distributor contact
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Role Organisation / Individual Name Details Distributor National Computational Infrastructure
Voice
- OnLine resource
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic file download
File download for East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic
- Distribution format
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WWW:LINK-1.0-http--link
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- OnLine resource
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic NCSS
NetCDF Subsetting Service (NCSS) for East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic
- Distribution format
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NCSS
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- OnLine resource
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic OPeNDAP
OPeNDAP web service for East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic
- Distribution format
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WWW:LINK-1.0-http--opendap
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- OnLine resource
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic WMS
OGC Web Mapping Service (WMS) for East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic
- Distribution format
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OGC:WMS
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- OnLine resource
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic WCS
OGC Web Coverage Service (WCS) for East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic
- Distribution format
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OGC:WCS
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Resource lineage
- Statement
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This East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic is a complete spherical cap Bouguer anomaly grid for the East Amadeus Gravity Survey, 2012 (P201280). This gravity survey was acquired under the project No. 201280 for the geological survey of NT. The grid has a cell size of 0.00754 degrees (approximately 800m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 7565 gravity stations were acquired to produce this grid. Three processes are required to correct the gravity observations for the effects of the surrounding topography: (1) a Bouguer correction (Bullard A), which approximates the topography as an infinite horizontal slab; (2) a correction to that horizontal slab for the curvature of the Earth (Bullard B); and (3) a terrain correction (Bullard C), which accounts for the undulations of the surrounding topography. The complete spherical cap Bouguer gravity anomalies were calculated by applying terrain correction (Bullard C) to the spherical cap Bouguer anomaly point data of East Amadeus Gravity Survey, 2012 (P201280). These terrain corrections were calculated using software from INTREPID Geophysics. The Intrepid algorithm utilises concentric rings subdivided into cells (Direen, 2001) to calculate the terrain correction. The terrain corrected data were then gridded using a gridding technique provided by 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. Details of the specifications of individual surveys held in the Australian National Gravity Database (ANGD) can be found in the Second Edition of the Index of Gravity Surveys (Wynne and Bacchin, 2009).
References:
Intrepid Geophysics, http://www.intrepid-geophysics.com;
Direen, N.G., 2001. Application of terrain corrections in Australia. Geoscience Australia, Canberra. https://pid.geoscience.gov.au/dataset/ga/33808;
Wynne, P. and Bacchin, M., 2009. Index of Gravity Surveys (Second Edition). Geoscience Australia, Record 2009/07.
- Hierarchy level
- Dataset
- Description
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This East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic includes ground gravity data for the East Amadeus Gravity Survey, 2012 (P201280) acquired for the geological survey of NT
Reference System Information
- Reference system identifier
- EPSG/GDA94 (EPSG:4283)
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/186ae3b9-3263-4994-af4d-9ea1ab03c1ed
- 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 Manager Client Services
- Title
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Geophysical Data Collection - gravity
- Citation identifier
- c6b58f54-102c-19e9-e044-00144fdd4fa6
- Citation identifier
- 74512
Type of resource
- Resource scope
- Dataset
- Name
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East Amadeus Gravity Complete Spherical Cap Bouguer Grid Geodetic
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/143938
- Date info (Creation)
- 2021-06-17T00:00:00
- Date info (Revision)
- 2021-06-17T00:00:00
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
- https://pid.geoscience.gov.au/dataset/ga/122551