The impact of a high magnitude flood on metal pollution in a shallow subtropical estuarine embayment

Coates-Marnane, J., Olley, J., Burton, J. and Grinham, A. (2016) The impact of a high magnitude flood on metal pollution in a shallow subtropical estuarine embayment. Science of The Total Environment, 569 716-731. doi:10.1016/j.scitotenv.2016.06.193


Author Coates-Marnane, J.
Olley, J.
Burton, J.
Grinham, A.
Title The impact of a high magnitude flood on metal pollution in a shallow subtropical estuarine embayment
Journal name Science of The Total Environment   Check publisher's open access policy
ISSN 0048-9697
1879-1026
Publication date 2016-11-01
Sub-type Article (original research)
DOI 10.1016/j.scitotenv.2016.06.193
Open Access Status Not Open Access
Volume 569
Start page 716
End page 731
Total pages 16
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2017
Language eng
Abstract Drought-breaking floods pose a risk to coastal water quality as sediments, nutrients, and pollutants stored within catchments during periods of low flow are mobilized and delivered to coastal waters within a short period of time. Here we use subtidal surface sediment surveys and sediment cores to explore the effects of the 2011 Brisbane River flood on trace metals zinc (Zn), lead (Pb), copper (Cu), nickel (Ni), chromium (Cr), manganese (Mn), and phosphorus (P) deposition in Moreton Bay, a shallow subtropical bay in eastern Australia. Concentrations of Zn, Cu, and Pb in sediments in central Moreton Bay derived from the 2011 flood were the highest yet observed in the Bay. We suggest flushing of metal rich sediments which had accumulated on the Brisbane River floodplain and in its estuary during the preceding 10 to 40 years of low flows to be the primary source of this increase. This highlights the importance of intermittent high magnitude floods in tidally influenced rivers in controlling metal transport to coastal waters in subtropical regions.
Keyword Trace metals
Estuarine embayment
Flooding
Sediment transport
Estuarine processes
Subtropics
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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Created: Sat, 09 Jul 2016, 16:56:00 EST by Dr Alistair Grinham on behalf of School of Civil Engineering