남극 브랜스필드 해협에서 입자플럭스의 게절 및 연간 변화

Title
남극 브랜스필드 해협에서 입자플럭스의 게절 및 연간 변화
Alternative Title
Seasonal and interannual variations of partilce fluxes in eastern Bransfield Strait, Antarctica
Author(s)
김동선; 김동엽; 박지수; 김영준; 강영철
KIOST Author(s)
Kim, Dong Seon(김동선)Kim, Young June(김영준)
Alternative Author(s)
김동선; 김동엽; 박지수; 김영준
Publication Year
2004-09-08
Abstract
Time-series sediment traps were deployed to investigate the temporal evolution of particle fluxes in eastern Bransfield Strait over three years, from December 1998 to December 2001. Particle fluxes showed large seasonal and interannual variations. In 1999 and 2000, a seasonal trend of mass fluxes was characterized by highly elevated mass fluxes over 300 mg m-2 d-1 during the summer season, of which summer fluxes were two orders of magnitude higher than winter mass fluxes, but such high summer fluxes were not observed in 2001, and seasonality was significantly reduced. The large interannual variation in particle fluxes is closely related with related with year to year changes in sea ice cover in eastern Bransfield Strait, which seems to act to limit the phytoplankton productivity in the surface waters. There is a lag of about one month between the surface water productivity and the export production in eastern Bransfield Strait. An average biogenic silica:organic carbon (Si:C) ratio of 1.5 is obtained at the trap material collected at a depth of 678 – 1034 m, of which ratio is lower than the results obtained in the marginal winter sea ice zone of the Atlantic section and the Antarctic zone of the Pacific section, but is similar to those observed in the Antarctic Polar Frontal zone of the both section. A three-year mean of annual organic carbon fluxes measured in eastern Bransfield Strait is 4.21 ± 3.16 gC m-2, which is about two times higher than that (2.84 ± 3.33 gC m-2) in central Bransfield Strait and a order of magnitude higher than that (0.35 gC m-2) in western Bransfield Strait.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31771
Bibliographic Citation
제9차 서울 국제 극지 심포지움, pp.40, 2004
Publisher
극지연구소
Type
Conference
Language
English
Publisher
극지연구소
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