The Spatial and Temporal Variability of Airborne Pollutants in Stormwater Runoff

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dc.contributor.authorMurphy, L.U.
dc.contributor.authorO'Sullivan, A.
dc.contributor.authorCochrane, T.A.
dc.date.accessioned2014-11-23T22:23:00Z
dc.date.available2014-11-23T22:23:00Z
dc.date.issued2014en
dc.description.abstractAtmospheric deposition is increasingly being recognised as a significant source of total suspended solids (TSS) and heavy metals in urban runoff. However, many uncertainties and challenges remain with measuring and managing these pollutants in runoff. Impermeable concrete boards were deployed in a residential, industrial, and airside land-use area in Christchurch for almost one year in 2013 to determine the spatial and temporal variability of airborne pollutant loads (principally TSS, Cu, Pb, and Zn) in runoff. Results showed that each land-use area displayed similar trends of increasing/decreasing pollutant loads throughout the monitoring period, suggesting that the pollutants originated from a similar source. Consistently higher pollutant loads were found for the industrial area, which was attributed to local topographic conditions rather than land-use activity. All pollutants had a statistically significant relationship with antecedent dry days, illustrating its importance on pollutant build-up. Pollutants dominated by their particulate-phase were influenced by peak rainfall intensity, which was explained by the energy from an intense rainfall event dislodging more particulate pollutants; however, this relationship was weak. Dissolved-phased pollutants displayed a greater relationship to rain depth showing that the quantity of rain influences the dissolution of pollutants from a surface.en
dc.identifier.citationMurphy, L.U., O'Sullivan, A., Cochrane, T.A. (2014) The Spatial and Temporal Variability of Airborne Pollutants in Stormwater Runoff. Christchurch, New Zealand: 9th South Pacific Stormwater Conference 2014, 14-16 May 2014. Proceedings, 14pp.en
dc.identifier.urihttp://hdl.handle.net/10092/9916
dc.language.isoen
dc.publisherUniversity of Canterbury. Civil and Natural Resources Engineeringen
dc.rights.urihttps://hdl.handle.net/10092/17651en
dc.subjectatmospheric depositionen
dc.subjectstormwateren
dc.subjectmetalsen
dc.subjecttotal suspended solidsen
dc.subjectspatial and temporal variabilityen
dc.subject.anzsrcFields of Research::37 - Earth sciences::3707 - Hydrology::370704 - Surface water hydrologyen
dc.subject.anzsrcField of Research::09 - Engineering::0905 - Civil Engineering::090508 - Water Quality Engineeringen
dc.subject.anzsrcField of Research::05 - Environmental Sciences::0502 - Environmental Science and Management::050205 - Environmental Managementen
dc.titleThe Spatial and Temporal Variability of Airborne Pollutants in Stormwater Runoffen
dc.typeConference Contributions - Published
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