Sinking particle flux and composition at three sites of different annual sea ice cover in the Amundsen Sea, Antarctica SCIE SCOPUS

Cited 3 time in WEB OF SCIENCE Cited 3 time in Scopus
Title
Sinking particle flux and composition at three sites of different annual sea ice cover in the Amundsen Sea, Antarctica
Author(s)
Kim, Minkyoung; Yang, Eun J.; Kim, Dongseon; Jeong, Jin-Hyun; Kim, Hyung J.; Park, Jisoo; Jung, Jinyoung; Ducklow, Hugh W.; Lee, SangHoon; Hwang, Jeomshik
KIOST Author(s)
Kim, Dong Seon(김동선)Kim, Hyung Jeek(김형직)
Alternative Author(s)
김동선; 정진현; 김형직
Publication Year
2019-04
Abstract
This study examines the sinking particle flux and composition of samples collected at three sites in the western Amundsen Sea, Antarctica: a perennial sea-ice-covered area, the central region of the Amundsen Sea polynya, and close to the Dotson Ice Shelf within the polynya. Time series sediment traps were deployed for one year at depths of 400-500 m from February and March 2012. Observations from the three sites confirm previously reported findings that the majority of annual POC (particulate organic carbon) flux in the Amundsen Sea occurs during the austral summer, with much smaller POC fluxes during other seasons. In the perennial ice-covered area, sea ice diatoms were the dominant source of sinking particles. In this region, the summertime POC flux is similar to that in the central polynya. However, the POC flux exhibited large interannual variability, with the reduction in sea ice cover and sufficient insolation being critical to enhanced sinking POC flux. Within the Amundsen Sea polynya, the sinking POC flux was higher in the central region than near the Dotson Ice Shelf, consistent with spatial variability in primary production. The site near the Dotson Ice Shelf had the lowest contribution of diatoms to sinking particles and the smallest POC flux among the three sites.
ISSN
0924-7963
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2097
DOI
10.1016/j.jmarsys.2019.01.002
Bibliographic Citation
JOURNAL OF MARINE SYSTEMS, v.192, pp.42 - 50, 2019
Publisher
ELSEVIER SCIENCE BV
Subject
PARTICULATE ORGANIC-CARBON; WATER COLUMN; ROSS SEA; COMMUNITY STRUCTURE; PHYTOPLANKTON; POLYNYA; VARIABILITY; BIOMASS
Keywords
Particulate organic carbon; Biological pump; Perennial ice-covered area; Polynya; Amundsen Sea
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Research Interests

Particle flux,Carbon cycle,Climate Change,입자 플럭스,탄소순환,기후변화

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