Airborne electromagnetic (AEM) survey and conductance data for Cooper Creek floodplain and surrounds for estimating groundwater bulk conductivity and mapping potential fresh groundwater lenses
<div>Airborne electromagnetics (AEM) is a geophysical technique used for estimating the bulk conductivity profile of the upper 300 m (approximately) of the subsurface. The AEM data acquired as part of the Exploring for the Future program AusAEM Eastern Corridor survey (Ley-Cooper 2021) covers much of the central Kati Thanda - Lake Eyre Basin (KT–LEB). Data for these regional surveys were acquired using the TEMPEST AEM system at a nominal 20 km line spacing.</div><div> </div><div>The prevalence and relative consistency of large sand-rich sediment zones across the Cooper Creek Palaeovalley (Evans et al. 2024) means that AEM data are potentially useful for inferring the distribution of groundwater salinity beneath the floodplain and surrounds. To visualise salinity from AEM data in a map, the thickness weighted average bulk conductivity was calculated for the 15 m depth interval beneath the watertable along the AEM survey lines. Symington et al. (2024) details the rationale and methods to produce the AEM bulk conductivity points. Symington et al. (2024) also included the code embedded in a jupyter notebook written to calculate bulk conductance points from AEM line data and undertake an uncertainty analysis to assess the likelihood of the conductance response to be related to groundwater (note that the link to the code is contained in the Symington et al. 2024 reference).</div><div> </div><div>In conjunction with sparse groundwater salinity and water level data from existing bores, Symington et al. (2024) used the conductance data to provide insights to address the following questions:</div><div>1. What is the regional scale distribution of groundwater salinity within the shallow alluvial aquifer?</div><div>2. Where does the shallow aquifer host fresh water?</div><div>3. What areas are most likely to receive recharge from the flanks of the floodplain?</div><div>4. Is there evidence for the groundwater discharging into the river?</div><div> </div><div>Data from Symington et al. (2024) were used to infer salinity across the Cooper Creek floodplain and Strzelecki Desert, as well as to determine the location of potential fresh groundwater lenses beneath Cooper Creek floodplain in SA and Queensland. The groundwater bore and uncertainty analysis suggests good correlation exists between groundwater bore data and AEM conductance points, where groundwater occurs at shallow depths in areas including the Cooper Creek floodplain, Strzelecki Desert, and Coongie Lakes. Data analysis, interpretation and results are in Symington et al. (2024) and further discussed in Evans et al. (2024), Symington et al. (2023) and Symington et al. (2022).</div><div> </div><div>References</div><div>Evans TJ, Bishop C, Symington NJ, Halas L, Hansen JWH, Norton CJ, Hannaford C and Lewis SJ (2024) Cenozoic geology, hydrogeology, and groundwater systems: Kati Thanda – Lake Eyre Basin, Record 2024/05, Geoscience Australia, Canberra, http://dx.doi.org/10.26186/147422.</div><div> </div><div>Ley-Cooper AY (2021) Exploring for the Future AusAEM Eastern Resources Corridor 2021 Airborne Electromagnetic Survey TEMPEST® airborne electromagnetic data and GALEI inversion conductivity estimates [data set], Geoscience Australia, https://ecat.ga.gov.au/geonetwork/srv/api/records/145744, accessed 14 December 2023.</div><div> </div><div>Symington N, Evans T, McPherson A, Buckerfield S, Rollet N, Ray A and Halas L (2024) Characterising surface water groundwater interaction using airborne electromagnetics: a case study from the Cooper Creek floodplain, Queensland, Australia, workflow release, Geoscience Australia, Canberra, https://dx.doi.org/10.26186/149176.</div><div> </div><div>Symington N, Evans T, Rollet N, Halas L, Vizy J, Buckerfield S, Ray A, LeyCooper Y and Brodie R (2023) Using regional airborne electromagnetic conductivity data to characterise surface water groundwater interaction in the Cooper Creek floodplain in arid central eastern Australia, Geoscience Australia, Canberra, https://pid.geoscience.gov.au/dataset/ga/147716.</div><div> </div><div>Symington N, Halas L, Evans T and Rollet N (2022) Mapping freshwater lenses in the Cooper Creek floodplain using airborne electromagnetics, Geoscience Australia, Canberra, https://pid.geoscience.gov.au/dataset/ga/147039.</div>
Simple
Identification info
- Date (Creation)
- 2024-08-31T08:00:00
- Date (Publication)
- 2024-11-25T23:19:38
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/149839
- Citation identifier
- Digital Object Identifier/https://dx.doi.org/10.26186/149839
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Symington, N.
External Contact Author Halas, L.
Internal Contact Author Evans, T.
Internal Contact
- Purpose
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This data package contains several airborne electromagnetic (AEM) and associated datasets from the Cooper Creek floodplain AEM case study undertaken as part of the activity to assess the Cenozoic geology, hydrogeology, and groundwater systems of the Kati Thanda – Lake Eyre Basin. This activity was part of the National Groundwater Systems (NGS) project in the Exploring for the Future program and used the Eastern Corridor AusAEM survey dataset. The data package also contains data showing the interpreted position of 14 fresh groundwater lenses at various locations beneath the Cooper Creek floodplain and surrounds as interpreted from AEM data.
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Resource provider Minerals, Energy and Groundwater Division
External Contact Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Lewis, S.
Internal Contact
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 2021-01-01 2021-12-31
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Project
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National Groundwater Systems
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- Project
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EFTF – Exploring for the Future
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- Keywords
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airborne electromagnetic survey
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AusAEM
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AusAEM interpretation
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data processing
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data workflows
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groundwater salinity
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groundwater recharge
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uncertainty analysis
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fresh groundwater lenses
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AEM bulk conductivity
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- Keywords
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Cooper Creek floodplain
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- Keywords
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Kati Thanda - Lake Eyre Basin
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- theme.ANZRC Fields of Research.rdf
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Groundwater hydrology
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Electrical and electromagnetic methods in geophysics
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
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4.0
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© Commonwealth of Australia (Geoscience Australia) 2024
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- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Classification system
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Australian Government Security Classification System
Associated resource
- Association Type
- Generated
- Title
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Cenozoic geology, hydrogeology and groundwater systems: Kati Thanda-Lake Eyre Basin
- Citation identifier
- 147422
- Citation identifier
- 536d99d7-00ec-4a56-9298-2a28db63aeb5
Associated resource
- Association Type
- Generated
- Title
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Exploring for the Future AusAEM Eastern Resources Corridor: 2021 Airborne Electromagnetic Survey TEMPEST® airborne electromagnetic data and GALEI inversion conductivity estimates
- Citation identifier
- 145744
- Citation identifier
- 44f4bc4f-b826-48d1-b134-33c6646ed675
Associated resource
- Association Type
- Generated
- Title
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Mapping freshwater lenses in the Cooper Creek floodplain using airborne electromagnetics
- Citation identifier
- 147039
- Citation identifier
- 410f20cc-ae41-4496-a6cb-0a90f281c428
Associated resource
- Association Type
- Generated
- Title
-
Using regional airborne electromagnetic conductivity data to characterise surface water groundwater interaction in the Cooper Creek floodplain in arid central eastern Australia
- Citation identifier
- 147716
- Citation identifier
- d7e1ab9b-4fcf-45aa-8cb8-539be7382068
Associated resource
- Association Type
- Generated
- Title
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Characterising surface water groundwater interaction using airborne electromagnetics: a case study from the Cooper Creek floodplain, Queensland, Australia, workflow release
- Citation identifier
- 149176
- Citation identifier
- a6641c2e-23b9-44bc-ac10-d6283c2cb415
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
- OnLine resource
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Download the data (zip) [9.1 MB]
Download the data (zip) [9.1 MB]
- Distribution format
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zip
- File decompression technique
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unzip
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Resource lineage
- Statement
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<div>Data lineage, processing code, workflows, and workflow methodology are described in Symington et al. (2024).</div>
Reference System Information
- Reference system identifier
- EPSG/GDA94 / geographic 2D (EPSG: 4283)
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/762d5faf-a7e1-4ee4-9e2b-35f74e6536b8
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Lewis, S.
Internal Contact
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/149839
- Date info (Creation)
- 2024-11-24T23:05:18
- Date info (Revision)
- 2024-11-24T23:05:18
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
-
Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- http://pid.geoscience.gov.au/dataset/ga/122551