ISSN:
1432-0495
Keywords:
Key words Metallic contaminants
;
Estuaries
;
Point sources
;
Non point sources
;
Baseline
;
concentrations
;
Background concentrations
;
Contaminant dispersal
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
Notes:
Abstract Size-normalized (〈63 μm) distributions of Cu, Zn, and Pb in the surficial sediments of one of Sydneys' four major estuaries – the Georges River/Botany Bay estuary – are not facies or depositionally controlled, but rather their distribution is dominated by source. Point sources (waste dumps, sewage overflows, and discharge from a polluted river) are responsible for elevating sediment heavy-metal concentrations up to 50 times above background. Nonpoint sources contribute in raising baseline levels to four times background and comprise mainly stormwater and also marinas, moorings, and wharfs/jetties. Heavy metals disgorged from a point source (Cooks River) strongly impact the sediments in the lower estuary, which has implications for the construction of a new runway for Sydney airport.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002540050090
