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Seasonal Variations of Settling Particles and Metal Fluxes at a Nearshore Site of Marian Cove, King George Island, Antarctica
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  • Journal title : Ocean and Polar Research
  • Volume 24, Issue 2,  2002, pp.123-134
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2002.24.2.123
 Title & Authors
Seasonal Variations of Settling Particles and Metal Fluxes at a Nearshore Site of Marian Cove, King George Island, Antarctica
Shim, Jeong-Hee; Kang, Young-Chul; Han, Myung-Woo; Kim, Dong-Seon; Chung, Ho-Sung; Lee, Sang-Hoon;
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 Abstract
Seasonal variations of settling particles and metal fluxes were monitored at a nearshore site of Marian Cove, King Geroge Island, Antarctica from 28th February 1998 to 22nd January 2000. Near-bottom sediment traps were deployed at 30m water depth of the cove, and sampling bottles were recovered every month by SCUBA divers. Total particulate flux and metal concentrations were determined from the samples. Total particulate flux showed a distinct seasonality, high in austral summer and low in austral winter: the highest flux was found in February of 1999, and the lowest in September of 1998, when sea surface was frozen completely. Lithogenic particle flux accounted for 90% of the total flux, and showed a significantly negative correlation with the thickness of snow accumulation around the study site. It was suggested that the most of the lithogenic particles trapped in the bottles was transported by melt water stream from the surrounding land. Fluxes of Al, Fe, Ti, Mn, Zn, Cii, Co, Ni, Cr, Cd, and Pb showed similar seasonal variations with the total flux, and their averaged fluxes were 34000, 9000,960, 180, 13.8, 17.6, 3.0,2.1, 5.4, 0.02, and respectively. Among the metals, Cu and Cd showed the most noticeable seasonal patterns. The Cd flux correlated positively with the fluxes of biogenic components while the Cu flux correlated with both the lithogenic and biogenic particle fluxes. The Cu flux peak in the late summer is likely related to a substantial amount of inflow of ice melt water laden with Cu-enriched lithogenic particles. On the other hands, the Cd flux peak in the early spring may be associated with the unusually early occurred phytoplankton bloom.
 Keywords
particle flux;metal;Marian Cove;Antarctica;sediment trap;
 Language
Korean
 Cited by
1.
남극 브랜스필드 해협에서 침강입자의 금속원소 특성,김동선;김동엽;김영준;강영철;심정희;

Ocean and Polar Research, 2003. vol.25. 1, pp.41-52 crossref(new window)
1.
Behaviors of Metals in the Settling Particles in the Bransfield Strait, Antarctica, Ocean and Polar Research, 2003, 25, 1, 41  crossref(new windwow)
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