P1293 Kidson WA airborne gravity gradiometer survey 2017

Full description

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.

Survey details
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

Files included in this download
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.

1. Point-located Data / line data
ASEG-GDF2 and Geosoft GDB format with accompanying description and definition files. The sample frequency is 8Hz.

2. Grids
Datum: GDA2020
Projection: MGA 51
Grid cell size: 500m
Formats: Geosoft GRD and ERMapper (.ers) with accompanying description files.

3. Reports
• 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.

Lineage

Maintenance and Update Frequency: asNeeded

Statement:

Notes

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.