Particle fluxes and delta N-15 variation of sinking particles in the central Bransfield Strait (Antarctica) SCIE SCOPUS KCI

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Particle fluxes and delta N-15 variation of sinking particles in the central Bransfield Strait (Antarctica)
Author(s)
Khim, Boo-Keun; Kim, Dongseon; Shin, Hyong Chul; Kim, Dong Yup
KIOST Author(s)
Kim, Dongseon(김동선)
Publication Year
2007-09
Abstract
Sediment-trap deployment in the central Bransfield Strait during 1999/2000 shows distinct seasonal variation of particle fluxes, in which more than 99% of total annual flux occurred during a limited time. A more positive relationship between biogenic silica and total organic carbon fluxes in the intermediatewater sediment trap demonstrates that the surface-water production (mainly diatoms) played an important role in the supply of biogenic particles during the short period. The low delta N-15 values of particulate organic particles are attributed to high nitrate concentration in the Antarctic surface waters. The gradual increasing delta N-15 values in the bottom-water trap from the productive to unproductive season are likely associated with a switch in source from diatom aggregates to some remains of zooplankton, supplement to the horizontal contribution of lithogenic particles presumably from nearby shallow environment. Thus, the delta N-15 enrichment of sinking particles in the bottom-water trap during December to early February seems to be due to the laterally transported materials, assuming that the delta N-15 values decrease with depth in the Antarctic Polar Frontal region.
ISSN
1226-4806
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4644
DOI
10.1007/BF02913933
Bibliographic Citation
GEOSCIENCES JOURNAL, v.11, no.3, pp.201 - 209, 2007
Publisher
GEOLOGICAL SOCIETY KOREA
Subject
SOUTHERN-OCEAN; BIOGENIC SILICA; PHYTOPLANKTON BIOMASS; ISOTOPIC COMPOSITION; ACCUMULATION RATES; ROSS SEA; NITROGEN; SEDIMENTS; GERLACHE; SECTOR
Keywords
sediment trap; sinking particles; organic carbon; nitrogen isotope; Bransfield Strait; Antarctica
Type
Article
Language
English
Document Type
Article
Publisher
GEOLOGICAL SOCIETY KOREA
Related Researcher
Research Interests

Biogeochemistry,Carbon cycle,Ocean acidification,생지화학,탄소순환,해양산성화

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