Journal
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
Volume 49, Issue 4-5, Pages 903-920Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0967-0645(01)00130-8
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Particle fluxes in the SW Bransfield Strait basin were determined by means of sediment traps deployed at intermediate and near-bottom water depths. Sampling was carried out during a complete year, from March 1995 to February 1996, during the FRUELA experiment, Total mass fluxes, major constituents, and Pb-210 were analyzed to study the temporal evolution of downward particle fluxes and to determine the origin of particles transferred to this basin. Mid-depth particle fluxes were much lower and showed a different temporal evolution than those near the bottom. Particle flux variability was mainly related to ice dynamics and biological productivity. The particulate matter transfer and export at mid-depth was very low and most of it took place between November and February during four 15-day sampling periods of the year. Downward carbon export at mid-depths was produced mainly by fecal pellets. The near-bottom fluxes were high (1.1-5.3g m(-2) d(-1)) during the whole year, and the greatest carbon transfer took place by lateral transport of resuspended and winnowed particulate matter. (C) 2001 Elsevier Science Ltd. All rights reserved.
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