Characterization of the subsurface architecture and identification of potential groundwater paths in a clay-rich floodplain using multi-electrode resistivity imaging

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dc.contributor.authorGuinea, Aen_AU
dc.contributor.authorHollins, SEen_AU
dc.contributor.authorMeredith, KTen_AU
dc.contributor.authorHankin, SIen_AU
dc.contributor.authorCendón, DIen_AU
dc.date.accessioned2021-03-04T04:29:57Zen_AU
dc.date.available2021-03-04T04:29:57Zen_AU
dc.date.issued2018-04-18en_AU
dc.date.statistics2021-03-04en_AU
dc.description.abstractThe interaction between surface water and groundwater in clay-rich fluvial environments can be complex and is generally poorly understood. Airborne electromagnetic surveys are often used for characterizing regional groundwater systems, but they are constrained by the resolution of the method. A resistivity imaging survey has been carried out in the Macquarie Marshes (New South Wales, Australia) in combination with water chemical sampling. The results have enabled the identification of buried palaeochannels and the location of potential recharge points. The data have been compared with previously published airborne electromagnetic data in the same area. Deeper less conductive features suggest that there is a potential connection between the Great Artesian Basin and groundwater contained within the shallow sand aquifer. Even though the chemistry of the groundwater samples does not indicate interaction with the Great Artesian Basin, the observed discontinuity in the saprolite implies potential for this to happen in other locations. The interaction between surface water and groundwater in clay-rich fluvial environments can be complex and is generally poorly understood. Airborne electromagnetic surveys are often used for characterizing regional groundwater systems, but they are constrained by the resolution of the method. A resistivity imaging survey has been carried out in the Macquarie Marshes (New South Wales, Australia) in combination with water chemical sampling. The results have enabled the identification of buried palaeochannels and the location of potential recharge points. The data have been compared with previously published airborne electromagnetic data in the same area. Deeper less conductive features suggest that there is a potential connection between the Great Artesian Basin and groundwater contained within the shallow sand aquifer. Even though the chemistry of the groundwater samples does not indicate interaction with the Great Artesian Basin, the observed discontinuity in the saprolite implies potential for this to happen in other locations. © 2018 International Association of Hydrological Sciences (IAHS)en_AU
dc.identifier.citationGuinea, A., Hollins, S., Meredith, K., Hankin, S., & Cendón, D. I. (2018). Characterization of the subsurface architecture and identification of potential groundwater paths in a clay-rich floodplain using multi-electrode resistivity imaging. Hydrological Sciences Journal, 63(6), 909-925. doi:10.1080/02626667.2018.1459624en_AU
dc.identifier.issn2150-3435en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleHydrological Sciences Journalen_AU
dc.identifier.pagination909-925en_AU
dc.identifier.urihttps://doi.org/10.1080/02626667.2018.1459624en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10480en_AU
dc.identifier.volume63en_AU
dc.language.isoenen_AU
dc.publisherTaylor & Francis Groupen_AU
dc.subjectTomographyen_AU
dc.subjectGroundwater rechargeen_AU
dc.subjectMarshesen_AU
dc.subjectSurface watersen_AU
dc.subjectGround wateren_AU
dc.subjectArtesian basinsen_AU
dc.subjectNew South Walesen_AU
dc.subjectAustraliaen_AU
dc.titleCharacterization of the subsurface architecture and identification of potential groundwater paths in a clay-rich floodplain using multi-electrode resistivity imagingen_AU
dc.typeJournal Articleen_AU
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