Data

Probabilistic airborne electromagnetic inversion of 20 km AusAEM data, Phase 1

Geoscience Australia
Ray, A. ; Douglas, A. ; VanDerWielen, S. ; LeyCooper, Y. ; Brodie, R. ; Symington, N. ; Nicoll, M. ; Wong, S. ; Sun, Y. ; Czarnota, K.
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/149375&rft.title=Probabilistic airborne electromagnetic inversion of 20 km AusAEM data, Phase 1&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/149375&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=This airborne electromagnetic (AEM) dataset provides regional scale probabilistic inversion products from 141,000 line km of airborne electromagnetic (AEM) data from the AusAEM program. The two main benefits of a probabilistic inversion over a deterministic one are: - Loss of signal sensitivity at depth does not “fade to blue” by returning to the resistive deterministic reference model. - Ambiguous subsurface features become clearer when examining multiple probability percentiles. Further details are provided in the accompanying technical note. Conductivity products from the following surveys are available: - Frome 2011 - AusAEM 1 NT (2017) - AusAEM 1 QLD (2017) - AusAEM 2 Tranche 1 part (2019) - AusAEM 3 Eastern Resources Corridor (all 3 phases) - AusAEM 3 Western Resources Corridor (Kimberley, Central, Musgraves and South) The 10th, 50th and 90th and mean percentiles of log10 conductivity are provided in a variety of formats: - VTK structured grids - ASCII point clouds - ASEG-GDF2 files - GOCAD S-grids All products have been provided in the coordinate reference system (CRS) the original AEM data were provided in. The VTK unstructured grids are also provided in GDA94 geodetic longitude, latitude coordinates for ease of display in the same CRS.Maintenance and Update Frequency: notPlannedStatement: This product is associated with deliverables from the HiQGA software&rft.creator=Ray, A. &rft.creator=Douglas, A. &rft.creator=VanDerWielen, S. &rft.creator=LeyCooper, Y. &rft.creator=Brodie, R. &rft.creator=Symington, N. &rft.creator=Nicoll, M. &rft.creator=Wong, S. &rft.creator=Sun, Y. &rft.creator=Czarnota, K. &rft.date=2024&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9&rft_rights= https://creativecommons.org/licenses/by/4.0/&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=Any&rft_rights=Any&rft_rights=(c) Commonwealth of Australia (Geoscience Australia) 2024&rft_rights=Australian Government Security Classification System&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security Classification System&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=EFTF – Exploring for the Future&rft_subject=Australia’s Resources Framework&rft_subject=airborne electromagnetics&rft_subject=probability&rft_subject=geophysical inversion&rft_subject=Electrical and electromagnetic methods in geophysics&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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(c) Commonwealth of Australia (Geoscience Australia) 2024

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Brief description

This airborne electromagnetic (AEM) dataset provides regional scale probabilistic inversion products from 141,000 line km of airborne electromagnetic (AEM) data from the AusAEM program. The two main benefits of a probabilistic inversion over a deterministic one are: - Loss of signal sensitivity at depth does not “fade to blue” by returning to the resistive deterministic reference model. - Ambiguous subsurface features become clearer when examining multiple probability percentiles. Further details are provided in the accompanying technical note. Conductivity products from the following surveys are available: - Frome 2011 - AusAEM 1 NT (2017) - AusAEM 1 QLD (2017) - AusAEM 2 Tranche 1 part (2019) - AusAEM 3 Eastern Resources Corridor (all 3 phases) - AusAEM 3 Western Resources Corridor (Kimberley, Central, Musgraves and South) The 10th, 50th and 90th and mean percentiles of log10 conductivity are provided in a variety of formats: - VTK structured grids - ASCII point clouds - ASEG-GDF2 files - GOCAD S-grids All products have been provided in the coordinate reference system (CRS) the original AEM data were provided in. The VTK unstructured grids are also provided in GDA94 geodetic longitude, latitude coordinates for ease of display in the same CRS.

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Maintenance and Update Frequency: notPlanned
Statement:
This product is associated with deliverables from the HiQGA software

Notes

Purpose
Uncertainty estimation for rapid interpretation of subsurface geology.

Created: 25 03 2024

Issued: 07 08 2024

Data time period: 2024-03-25 to 2024-03-25

This dataset is part of a larger collection

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154,-9 154,-44 112,-44 112,-9 154,-9

133,-26.5

text: westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9

Subjects
Australia’s Resources Framework | EFTF – Exploring for the Future | Electrical and electromagnetic methods in geophysics | Published_External | airborne electromagnetics | geophysical inversion | geoscientificInformation | probability |

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Other Information
Download summary document describing package contents (pdf) [1.8 MB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_00_0.pdf

Download line locations as shapefiles (shp gpkg) [6.0 MB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_04_0.zip

Download conductivity percentiles as summary PNG images [6.2 GB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_02_0.zip

Download conductivity percentiles in ASEG-GDF format [188.5 MB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_01_0.zip

Download 3D GOCAD SGrids [550.9 MB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_03_0.zip

Download conductivity percentiles as 3D VTK structured in MGA survey projections (vts) [338.1 MB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_05_0.zip

Download conductivity percentiles as 3D VTK structured grids in GDA94 longitude latitude (vts) [339.5 MB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_06_0.zip

Download conductivity percentiles as ASCII plain text files in MGA survey projections (txt) [802.5 MB]

uri : https://d28rz98at9flks.cloudfront.net/149375/149375_07_0.zip

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