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dc.contributor.authorBestland, Erick
dc.contributor.authorGeorge, Amy
dc.contributor.authorGreen, Graham
dc.contributor.authorOlifent, Vanessa
dc.contributor.authorMackay, Duncan
dc.contributor.authorWhalen, Molly
dc.date.accessioned2017-08-17T02:30:59Z
dc.date.available2017-08-17T02:30:59Z
dc.date.issued2017
dc.identifier.issn2214-5818
dc.identifier.doi10.1016/j.ejrh.2016.12.087
dc.identifier.urihttp://hdl.handle.net/10072/340882
dc.description.abstract1. Study region The Clare Valley region of South Australia. 2. Study focus Continuing extraction of groundwater threatens pools in seasonal and permanent streams. In order to determine this groundwater dependence, the pools and groundwater from corresponding fractured rock aquifers were investigated using environmental tracers (δD, δ18O, 87Sr/86Sr, and major and minor elements). For the 11 paired pool-groundwater sites in the four different catchments, groundwater dependence was evaluated over a four season sampling period. 3. New hydrological insights In this Mediterranean climate with cool wet winters and dry hot summers strong salinity changes (up to 2.5 times) due to seasonal cycles of wetting and drying were observed in surface water. Oxygen and hydrogen isotope values from pool sites showed strong evaporative enrichment during the dry season with up to 50% net evaporation calculated. Water isotopes from groundwater, however, cluster at the depleted end of the local meteoric water line and most do not show change despite significant seasonal salinity changes. Strontium isotope values and concentrations from the pools over the one year period do not define a mixing relationship. Instead, most pool sites have unchanging strontium isotope values despite the large seasonal change in salinity indicating strong evaporation of groundwater fed pools during this drought year.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom216
dc.relation.ispartofpageto235
dc.relation.ispartofjournalJournal of Hydrology: Regional Studies
dc.relation.ispartofvolume9
dc.subject.fieldofresearchEnvironmental Sciences not elsewhere classified
dc.subject.fieldofresearchPhysical Geography and Environmental Geoscience
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchcode059999
dc.subject.fieldofresearchcode0406
dc.subject.fieldofresearchcode0502
dc.titleGroundwater dependent pools in seasonal and permanent streams in the Clare Valley of South Australia
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CCBY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorGeorge, Amy K.


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