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Source of sedimentary organic carbon along a Mackenzie Trough transect in the Canadian Beaufort Sea

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Title
Source of sedimentary organic carbon along a Mackenzie Trough transect in the Canadian Beaufort Sea
Other Titles
캐나다 보퍼트해 메켄지 트로프에서의 유기물 기원 추적 연구
Authors
Kim, Dahae
Kim, Jung-Hyun
Kang, Sujin
Park, Kwangkyu
Lee, Dong-Hun
Jin, Young Keun
Nam, Seung-il
Shin, Kyung-Hoon
Keywords
Beaufort Sea; Mackenzie Trough; Organic carbon
Issue Date
2020
Citation
Kim, Dahae, et al. 2020. Source of sedimentary organic carbon along a Mackenzie Trough transect in the Canadian Beaufort Sea. KOQUA(The Korean Quaternary Association) 2020 Autumn Conference. Online. 2020.12.17~2020.12.17.
Abstract
The Arctic is warming twice as fast as other parts of the Earth. Thus, the release of vast amounts of organic carbon (OC) from the terrestrial permafrost to the Arctic Ocean is expected to be accelerated through several pathways including river discharges. The Mackenzie River, which is the fourth-largest Arctic river in terms of freshwater discharge, but the first in terms of sediment discharge, is thus the most important source of terrestrial freshwater and sediment input to the Beaufort Sea. In this study, we investigated surface sediments collected along a Mackenzie Trough transect during the ARA04C, ARA05C, and ARA08C expeditions of the Korean ice-breaker R/V Araon in the Canadian Beaufort Sea in 2013, 2014, and 2017, respectively. We analyzed the samples for bulk (grain size, major element, TOC, TON, δ13Corg, and △14Corg) and molecular (n -alkanes and sterols) parameters to assess the source of sedimentary OC. Our results provide information on the effect of the recent Arctic warming on the land-ocean terrestrial OC transfer in the Canadian Beaufort Sea.
URI
https://repository.kopri.re.kr/handle/201206/12360
Conference Name
KOQUA(The Korean Quaternary Association) 2020 Autumn Conference
Conference Place
Online
Conference Date
2020.12.17~2020.12.17
Appears in Collections  
2020-2020, Investigation of submarine resource environment and seabed methane release in the Arctic (20-20) / Jin, Young Keun (PM20050)
2020-2020, RAPID (Reconstruction of Arctic sea ice change during the Holocene by paleoclimate data-model comparison) (20-20) / Kim, Jung-Hyun (PE20410)
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