Use of stable and radioactive isotopes to unravel surface water groundwater interactions in developed catchment

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dc.contributor.authorAndersen, MSen_AU
dc.contributor.authorRau, GCen_AU
dc.contributor.authorMeredith, KTen_AU
dc.contributor.authorMcCallum, AMen_AU
dc.contributor.authorAcworth, RIen_AU
dc.date.accessioned2016-05-31T07:02:16Zen_AU
dc.date.available2016-05-31T07:02:16Zen_AU
dc.date.issued2015-01-01en_AU
dc.date.statistics2016-05-31en_AU
dc.description.abstractAbstract: Traditionally surface water groundwater interactions are estimated using hydrometric and water balance methods. However, the hydrometric methods, based on hydraulic gradients, have huge uncertainties related to the mostly unknown and often highly heterogeneous permeability distribution. Similarly, the surface water groundwater exchange can be relatively small compared to other components of the water balance (e.g. differential steam flow gauging) and consequently its estimation is associated with large uncertainties when using a water balance method. Environmental tracers such as isotopes on the other hand integrate what has actually taken place. However, each individual isotopic tracer has particular advantages and disadvantages and therefore limited use. For instance each radioactive isotope is limited to provide residence time estimations within a certain age range whereas stable isotopes only work when different water sources have distinctly different isotopic compositions. In this study, of a highly developed catchment subject to groundwater depletion it is demonstrated that by combining different tracers (14C, 3H, 2H and 18O) a more complete picture of the surface water groundwater interactions can be obtained.en_AU
dc.identifier.citationAndersen, M.S., Rau, G., Meredith, A., McCallum, A., & Acworth, I. (2015). Use of stable and radioactive isotopes to unravel surface water groundwater interactions in developed catchment. Poster presented to the International Symposium on Isotope Hydrology: Revisiting Foundations and Exploring Frontiers, IAEA Headquarters, Vienna, Austria. 11–15 May 2015. Retrieved from: http://www-naweb.iaea.org/napc/ih/documents/other/Poster%20session%203.pdfen_AU
dc.identifier.conferenceenddate15 May 2015en_AU
dc.identifier.conferencenameInternational Symposium on Isotope Hydrology: Revisiting Foundations and Exploring Frontiers,en_AU
dc.identifier.conferenceplaceVienna, Austriaen_AU
dc.identifier.conferencestartdate11 May 2015en_AU
dc.identifier.govdoc6407en_AU
dc.identifier.pagination226en_AU
dc.identifier.urihttp://www-naweb.iaea.org/napc/ih/documents/other/Poster%20session%203.pdfen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6877en_AU
dc.language.isoenen_AU
dc.publisherInternational Atomic Energy Agencyen_AU
dc.subjectRadioactivityen_AU
dc.subjectIsotopesen_AU
dc.subjectGround wateren_AU
dc.subjectHydraulicsen_AU
dc.subjectEnvironmenten_AU
dc.subjectSpectrally selective surfacesen_AU
dc.titleUse of stable and radioactive isotopes to unravel surface water groundwater interactions in developed catchmenten_AU
dc.typeConference Presentationen_AU
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