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

Cited 3 time in wos
Cited 4 time in scopus
Title
Sinking particle flux and composition at three sites of different annual sea ice cover in the Amundsen Sea, Antarctica
Other Titles
남극 아문젠해 연간 해빙분포가 다른 세 개 정점에서의 침강입자 플럭스 및 조성
Authors
Kim, Minkyoung
Yang, Eun Jin
Kim, Dongseon
Jeong, Jin-Hyun
Kim, Hyung J.
Park, Jisoo
Jung, Jinyoung
Ducklow, Hugh W.
Lee, Sang Hoon
Hwang, Jeomshik
Subject
GeologyMarine & Freshwater BiologyOceanography
Keywords
Amundsen SeaBiological pumpParticulate organic carbonPerennial ice-covered areaPolynya
Issue Date
2019-04
Citation
Kim, Minkyoung, et al. 2019. "Sinking particle flux and composition at three sites of different annual sea ice cover in the Amundsen Sea, Antarctica". JOURNAL OF MARINE SYSTEMS, 192(1): 42-50.
Abstract
This study examines the sinking particle flux and composition of samples collected at three sites in the western Amundsen Sea, Antarctica: a perrennial 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 the 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.
URI
https://repository.kopri.re.kr/handle/201206/10949
DOI
http://dx.doi.org/10.1016/j.jmarsys.2019.01.002
Type
Article
Station
Araon
Indexed
SCI
Appears in Collections  
2018-2018, Ocean-to-Ice Interactions in Amundsen Sea: Ice shelf melting and its impact on ocean processes (18-18) / Kim, Tae-Wan (PE18060)
2017-2017, Ocean-to-Ice Interactions in Amundsen Sea: Ice shelf melting and its impact on ocean processes (17-17) / Lee, SangHoon (PE17060)
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