Authors / CoAuthors
Lane, R.J.L. | Wynne, P.E. | Poudjom Djomani, Y. | Stratford, W.R. | Barretto, J.A. | Caratori Tontini, F.
Abstract
This set of explanatory notes provided the process of creating the 2019 National Gravity Grids released September 2020. This information provides a step by step guide to the processing sequence undertaken. The Notes provide: 1) the data sources for the grids, such as Geoscience Australia's National Airborne Geophysics Database (NAGD), the Australian National Gravity Database (ANGD), and Sandwell and Smith (v28p1) satellite gravity data. 2) Equations used to reduce gravity, gridding calculations, and observation surface for the "B" series grids, 3) Step by step processing sequence. There is also a section with a simple aid to interpreting the grids. The grids are available either as a complete set of grids, or individually, from the associated link. Links: https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/133023
Product Type
document
eCat Id
144233
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCESGEOPHYSICS
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- Gravity
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- Geophysics
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- Published_External
Publication Date
Creation Date
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Status
completed
Purpose
To provide the processes utilised in the creation of the 2019 National Gravity Grids, including equations. Impart a basic understanding of how to interpret the grids.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Record RECORD 2020/022
Lineage
The record is based on the production of the 2019 Gravity Grids. the sources of the record details are process created by GNS Science Ltd and Geoscience Australia to produce the grids, such as workflows and equations. Data for the grids were obtained from the Australian National Gravity Database (ANGD) as of September 2019 and airborne Gravity/Gravity Gradiometry surveys stored in the National Airborne Geophysics Database, External to Geoscience Australia the Sandwell and Smith v28p1 data (1997) for offshore areas were utilised.
Parent Information
Extents
[-48.00, -8.00, 108.00, 164.00]
Reference System
Spatial Resolution
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