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Seawater Inundation Of Coastal Floodplain Sediments: Short-Term Changes In Surface Water And Sediment Geochemistry, Vanessa Wong, Scott Johnston, Edward Burton, Phillip Hirst, Leigh Sullivan, Richard Bush, Mark Blackford
Seawater Inundation Of Coastal Floodplain Sediments: Short-Term Changes In Surface Water And Sediment Geochemistry, Vanessa Wong, Scott Johnston, Edward Burton, Phillip Hirst, Leigh Sullivan, Richard Bush, Mark Blackford
Associate Professor Edward D Burton
Coastal floodplains are highly vulnerable to seawater inundation as a result of storm surge and sea-level rise due to their low elevation and proximity to the coastline. Intact soil cores from a levee, acid-sulfate soil scald and four backswamp sites on a coastal floodplain in eastern Australia were inundated with artificial seawater treatments (0%, 50% and 100%) for 14 days to examine the short term consequences for surface water and floodplain sediment geochemistry. All sites displayed an initial decrease in surface water pH following inundation with 50% and 100% seawater. In addition, higher concentrations of trace metals (Al, Fe, Mn, …