Authors / CoAuthors
Geophysical Acquisition & Processing Section
Abstract
Gravity data measures 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 Birrindudu Bouguer anomaly grid geodetic is a complete Bouguer anomaly grid for the Birrindudu, NT Detailed Gravity 2005 (P4022). This gravity survey was acquired under the project No. 4022 for the geological survey of NT. The grid has a cell size of 0.0037 degrees (approximately 400m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of None gravity stations were acquired to produce this grid.
Product Type
dataset
eCat Id
140247
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCES
- ( Data centre )
-
- NCI
- ( Discipline )
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- Earth sciences
- ( Discipline )
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- geophysics
- ( Feature type )
-
- grid
- ( Place )
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- Australia
- ( Place )
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- NT
- ( Project )
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- survey 4022
- ( Theme )
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- GADDS2.0
- ( Theme )
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- gravity
- ( Theme )
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- Bouguer
- ( Theme )
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- infinite slab
- ( Theme )
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- simple Bouguer
- ( Theme )
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- ground digital data
- ( Theme )
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- geophysical survey
- ( Theme )
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- grav
- ( Theme )
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- grid
- ( Theme )
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- raster
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- Published_External
Publication Date
2020-03-07T00:00:00
Creation Date
2020-03-07T00:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
Maintenance Information
notPlanned
Topic Category
geoscientificInformation
Series Information
Lineage
This Birrindudu Bouguer anomaly grid geodetic is a simple Bouguer anomaly grid for the Birrindudu, NT Detailed Gravity 2005 (P4022). This gravity survey was acquired under the project No. 4022 for the geological survey of NT. The grid has a cell size of 0.0037 degrees (approximately 400m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of None gravity stations were acquired to produce this grid. The Bouguer gravity anomalies were calculated by applying a Bouguer correction with a density of 2670 kg per cubic meter to the point data of Birrindudu, NT Detailed Gravity 2005 (P4022). The 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; Wynne, P., and Bacchin, M., 2009. Index of Gravity Surveys (Second Edition). Geoscience Australia, Record 2009/07.
Parent Information
Geophysical Data Collection - gravity
UUID - c6b58f54-102c-19e9-e044-00144fdd4fa6,
eCat ID - 74512
Extents
[-19.0011, -17.9799, 128.9867, 130.5037]
Reference System
GDA94 (EPSG:4283)
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
This Birrindudu Bouguer anomaly grid geodetic includes ground gravity data for the Birrindudu, NT Detailed Gravity 2005 (P4022) acquired for the geological survey of NT