2004
DOI: 10.1007/bf02803536
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Spatial and temporal variations in copper speciation in San Diego Bay

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Cited by 35 publications
(39 citation statements)
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“…The surface waters off the pier in the winter months are characterized by lower water temperature, a higher degree of mixing and more runoff from rains. The latter two of these could lead to episodic pulses of higher copper in surface waters, and although we have no direct measurements of seasonal copper at this location, it is well-known that runoff does tend increase copper levels in San Diego Bay, and the rainy winter months have significantly higher copper levels (Blake et al, 2004;Buck et al, 2007). Additionally, it could be that copper is also upwelled seasonally (Takesue and van Geen 2002).…”
Section: Discussionmentioning
confidence: 85%
“…The surface waters off the pier in the winter months are characterized by lower water temperature, a higher degree of mixing and more runoff from rains. The latter two of these could lead to episodic pulses of higher copper in surface waters, and although we have no direct measurements of seasonal copper at this location, it is well-known that runoff does tend increase copper levels in San Diego Bay, and the rainy winter months have significantly higher copper levels (Blake et al, 2004;Buck et al, 2007). Additionally, it could be that copper is also upwelled seasonally (Takesue and van Geen 2002).…”
Section: Discussionmentioning
confidence: 85%
“…Although the Cu 2ϩ concentration is generally low (10 Ϫ14 M) in the surface waters of the open ocean, it can increase by 3 or 4 orders of magnitude below the euphotic zone (12), and a mixing event could thus cause a sharp increase in Cu 2ϩ concentrations. Furthermore, in coastal environments, a sharp spike in free-copper levels can occur after a heavy rain due mostly to anthropogenic inputs (6). Finally, there is evidence that dust deposition can introduce copper into surface waters (35).…”
mentioning
confidence: 99%
“…According to Largier et al (1997), hyper-saline estuaries are usually characterized by weak tide dispersion capacity, resulting in longer water resident time along the estuarine bed. So, as a result, these ecosystems tend to accumulate contaminants rather than export them to neighbor systems (Blake et al 2004). Another typical feature of these areas are the high evaporation rates, contributing to the concentration of solutes in the water column, inducing to coagulation and finally precipitation of insoluble authigenic minerals in surface sediment (Shumilin et al 2002).…”
Section: Resultsmentioning
confidence: 99%