Authors / CoAuthors
Abstract
CGG Aviation (now Xcalibur Multiphysics) collected airborne gravity data in the Kidson area covering parts of the Gibson and Great Sandy Deserts in central Western Australia as part of a collaborative project between Geoscience Australia (GA) and the Geological Survey of Western Australia (GSWA). The aim of the project was to collect airborne gravity gradiometry data in the region at 2500 m wavelength resolution to help characterise key undercover geological elements of the region. The survey consisted of a Main block and an Extension block. Data were acquired from North/South flight lines (Main block) and East-West flight lines (Extension block) with an average target ground clearance of 120m. Tie lines at 25,000m line spacing were flown only for the Main block. A total of 78,700 line kilometres of data were collected during the survey. <b>Survey details</b> Survey Name: Kidson WA airborne gravity gradiometer survey 2017 State/Territory: Western Australia Datasets Acquired: Airborne gravity gradiometer Geoscience Australia Project Number: Acquisition Start Date: July 21, 2017 Acquisition End Date: May 3, 2018 Number of blocks: 2 Flight line spacing: 2,500m Flight line direction: Area 1 - 180 deg/ NS; Area 2 - 270 deg/EW Tie line spacing: 25,000m Tie line direction: Area 1 only - 270 deg / EW Total distance flown: 78,700 line kilometres Nominal terrain clearance (above ground level): 120m Clearance method: Drape Aircraft type: 2 aircrafts with different Falcon AGG system installed - Cessna Grand Caravan 208B / Full spectrum Falcon system Kepler/Newton Data Acquisition: CGG Aviation Australia Pty Ltd Project Management: Geoscience Australia Quality Control: Dr Mark Dransfield contracted by Geoscience Australia Dataset Ownership: Western Australia and Geoscience Australia <b>Files included in this download</b> The original agreement with CGG Aviation Australia Pty Ltd (CGG) stated that gradient point located data was available for purchase on non-exclusive terms from CGG until 30 June 2027, after which date the gradient data would be made public. In July 2021, the terms of the agreement changed after Xcalibur Multiphysics acquired CGG Aviation Pty Ltd. Xcalibur authorised the release of the gradient data. A new final dataset and report was generated by Xcalibur and delivered to Geoscience Australia. This data release contains the gradient point located data. <b>1. Point-located Data / line data</b> ASEG-GDF2 and Geosoft GDB format with accompanying description and definition files. The sample frequency is 8Hz. <b>2. Grids</b> Datum: GDA2020 Projection: MGA 51 Grid cell size: 500m Formats: Geosoft GRD and ERMapper (.ers) with accompanying description files. <b>3. Reports</b> • Final survey logistic report delivered to Geoscience Australia by the survey contractor. • Kidson QC report from Dr Mark Dransfield The data from this Kidson airborne gravity gradiometry survey has been released and can be downloaded from the Geological Survey of Western Australia’s MAGIX platform at https://magix.dmirs.wa.gov.au and GeoVIEW.WA web mapping application at https://geoview.dmp.wa.gov.au/GeoView under reference number 71234.
Product Type
dataset
eCat Id
147481
Contact for the resource
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Digital Object Identifier
Keywords
- ( Project )
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- airborne gravity gradiometry
- ( Project )
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- conforming
- ( Project )
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- Kidson Basin
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- Airborne Gravity Gradiometry
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- Kidson basin
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- Western Australia
- theme.ANZRC Fields of Research.rdf
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- Gravimetrics
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- Published_External
Publication Date
2022-12-16T01:01:10
Creation Date
2022-12-01T20:00:00
Security Constraints
Legal Constraints
Status
Purpose
High-resolution gravity on regional/district scales is an important component of mineral and energy integrated pre-competitive approach to data collection and information to support new and ongoing industry exploration investment in Australia's resources. Such data is also invaluable for vertical positioning accuracy with industry and government agencies requiring vertical height surfaces to within 10 cm for advanced (often autonomous) operations, productivity efficiency, and safety.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
<div>CGG Aviation (now Xcalibur Multiphysics) collected airborne gravity data in the Kidson area covering parts of the Gibson and Great Sandy Deserts in central Western Australia as part of a collaborative project between Geoscience Australia (GA) and the Geological Survey of Western Australia (GSWA). The data was collected at 2.5 km wavelength resolution to help characterise key undercover geological elements of the region. The survey consisted of two areas. A total of 78,700 line kilometres of data were collected during the survey. During the survey, two aircraft were used. Each aircraft had a different Falcon Airborne Gravity Gradiometer (AGG) system installed: Kepler Digital and Newton Analog. An sGrav was used on the survey to improve the long wavelength gravity signal, but it failed during the acquisition. </div><div> </div><div>Data processing was conducted by Xcalibur Multiphysics. This includes spectral analysis, signal resolution, noise analysis, noise reduction, tensor transformation, sGrav processing and data conforming. During the processing, the portions of the survey area with no sGrav data were filled with regional gravity data taken from the 2019 Australian National Gravity Grid (Lane et al, 2020). The final data were peer reviewed by AGG expert Dr Mark Dransfield contracted by Geoscience Australia. </div><div> </div><div>Reference: </div><div>Lane, R.J.L., Wynne, P.E., Poudjom Djomani, Y., Stratford, W.R., Barretto, J.A., Caratori Tontini, F. 2020. 2019 Australian National Gravity Grids: Free Air Anomaly, Complete Bouguer Anomaly, De-trended Global Isostatic Residual, 400 m cell size (includes Point Located Data). Geoscience Australia, Canberra. https://pid.geoscience.gov.au/dataset/ga/133023</div><div><br></div>
Parent Information
Extents
[-24.00, -19.70, 121.00, 127.60]
Reference System
GDA2020 / MGA zone 51 (EPSG:7851)
Spatial Resolution
Service Information
Associations
Association Type - isComposedOf
2019 Australian National Gravity Grids: Free Air Anomaly, Complete Bouguer Anomaly, De-trended Global Isostatic Residual, 400 m cell size (includes Point Located Data)
eCat Identifier - 133023,
UUID - fe9e34e3-8591-46f6-99ab-f73fb6f9fd43
Association Type - informed
2019 Australian National Gravity Grids Explanatory Notes
eCat Identifier - 144233,
UUID - a9b9c288-ce06-49cc-a943-68571bdc40e3
Downloads and Links
Source Information