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Titolo:
PROCESSES INFLUENCING THE FATE OF TRACE-METALS IN THE NORTH-SEA
Autore:
BURTON JD; ALTHAUS M; MILLWARD GE; MORRIS AW; STATHAM PJ; TAPPIN AD; TURNER A;
Indirizzi:
UNIV SOUTHAMPTON,DEPT OCEANOG SOUTHAMPTON SO9 5NH HANTS ENGLAND UNIV PLYMOUTH,DEPT ENVIRONM PLYMOUTH PL4 8AA ENGLAND PLYMOUTH MARINE LAB PLYMOUTH PL1 3DH ENGLAND
Titolo Testata:
Philosophical transactions-Royal Society of London. Physical sciences and engineering
fascicolo: 1669, volume: 343, anno: 1993,
pagine: 557 - 568
SICI:
0962-8428(1993)343:1669<557:PITFOT>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUSPENDED MATTER; SEAWATER; MANGANESE; CD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
J.D. Burton et al., "PROCESSES INFLUENCING THE FATE OF TRACE-METALS IN THE NORTH-SEA", Philosophical transactions-Royal Society of London. Physical sciences and engineering, 343(1669), 1993, pp. 557-568

Abstract

Measurements were made in the southern North Sea of trace metals (dissolved and particulate Mn, Fe, Ni, Co, Cu, Zn, Cd, Pb) with contrasting biogeochemical behaviours. The extent to which distributions of dissolved metals over the survey area were determined by the mixing of river waters with seawater varied among the metals, and also seasonally; even for nickel and copper, which behaved most conservatively, other processes were significant. Specific instances of the effects of scavenging by particles and of inputs from benthic recycling are evident from the data and these processes lead generally to modifications of fluxes of dissolved metals in estuarine plumes. While the effect of atmospheric inputs on dissolved concentrations of metals is, on the basis ofother evidence, a factor contributing to spatial and temporal variability, specific features arising from them were not identified they probably account, however, for increased concentrations of dissolved leadobserved at high salinities in the Humber plume. Seasonal variations in concentrations of dissolved metals, paralleling those of micronutrients, were not identified but manganese showed a pronounced seasonal variability related to its reduction-oxidation chemistry. Wide differences occurred in the partition between dissolved and particulate fractions, although for copper and zinc the partition could be described by a narrow range of distribution coefficients under certain conditions.

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Documento generato il 28/03/20 alle ore 23:31:43