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dc.contributor.authorGILL, LAURENCEen
dc.date.accessioned2014-11-03T13:43:14Z
dc.date.available2014-11-03T13:43:14Z
dc.date.issued2014en
dc.date.submitted2014en
dc.identifier.citationMcCormack T., Gill L.W., Naughton O., Johnston P.M., Quantification of submarine/intertidal groundwater discharge and nutrient loading from a lowland karst catchment, Journal of Hydrology, 519, 2014, 2318 - 2330en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/71749
dc.descriptionPUBLISHEDen
dc.description.abstractSummary Submarine groundwater discharge (SGD) is now recognised to be a process of significant importance to coastal systems and is of increasing interest within oceanographic and hydrologic research communities. However, due to the inherent difficulty of measuring SGD accurately, its quantification at any particular location is a relatively slow process often involving multiple labour intensive methods. In this paper, the SGD occurring at Kinvara Bay, the outlet of a lowland karst catchment in Western Ireland, is estimated using a hydrological model of the karst aquifer and then further verified by means of a relatively simple salinity survey. Discharge at Kinvara predominantly occurs via two springs, Kinvara West (KW) which serves as the outlet of a major, primarily allogenically fed, karst conduit network and Kinvara East (KE) which discharges water from more diffuse/autogenic sources. Discharge from these springs occurs intertidally and as such, their flow rates cannot be measured using traditional methods. Using the hydrological model, flow rates from KW were seen to vary between 5 – 15 m3/s with a mean value of 7.6 m3/s. Through hydrochemical analysis, this estimated discharge was found to be supplemented by an additional 14-18% via sources not accounted for by the model. Mean discharge at KE was also estimated as approximately 1.1 m3/s, thus the total mean discharge from both Kinvara Springs was determined to be 9.75-10 m3/s. Overall, the range of discharge was found to be lower than previous studies have estimated (as these studies had no means of quantifying attenuation within the conduit network). Combining this discharge with nutrient concentrations from the springs, the nutrient loading from the springs into the bay was estimated as 964 kg/day N and 19.8 kg/day P. This research illustrates the benefits of a numerical modelling approach to the quantification of SGD when used in the appropriate hydrological scenario.en
dc.format.extent2318en
dc.format.extent2330en
dc.language.isoenen
dc.relation.ispartofseriesJournal of Hydrologyen
dc.relation.ispartofseries519en
dc.rightsYen
dc.subjectSubmarine groundwater dischargeen
dc.subjectKarsten
dc.subjectModellingen
dc.subjectSalinityen
dc.subjectNutrient Loadingen
dc.subjectIrelanden
dc.titleQuantification of submarine/intertidal groundwater discharge and nutrient loading from a lowland karst catchmenten
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/gilllen
dc.identifier.rssinternalid94918en
dc.identifier.doi10.1016/j.jhydrol.2014.09.086en
dc.rights.ecaccessrightsopenAccess
dc.subject.TCDThemeSmart & Sustainable Planeten
dc.subject.TCDTagEnvironmental engineeringen
dc.subject.TCDTagkarst hydrologyen


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