气候变化领域集成服务门户(CCPortal): Burial and Origin of Permafrost-Derived Carbon in the Nearshore Zone of the Southern Canadian Beaufort Sea

CCPortal

DOI	10.1029/2019GL085897
	Burial and Origin of Permafrost-Derived Carbon in the Nearshore Zone of the Southern Canadian Beaufort Sea
	Grotheer H.; Meyer V.; Riedel T.; Pfalz G.; Mathieu L.; Hefter J.; Gentz T.; Lantuit H.; Mollenhauer G.; Fritz M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	Detailed organic geochemical and carbon isotopic (δ13C and Δ14C) analyses are performed on permafrost deposits affected by coastal erosion (Herschel Island, Canadian Beaufort Sea) and adjacent marine sediments (Herschel Basin) to understand the fate of organic carbon in Arctic nearshore environments. We use an end-member model based on the carbon isotopic composition of bulk organic matter to identify sources of organic carbon. Monte Carlo simulations are applied to quantify the contribution of coastal permafrost erosion to the sedimentary carbon budget. The models suggest that ~40% of all carbon released by local coastal permafrost erosion is efficiently trapped and sequestered in the nearshore zone. This highlights the importance of sedimentary traps in environments such as basins, lagoons, troughs, and canyons for the carbon sequestration in previously poorly investigated, nearshore areas. © 2019. The Authors.
英文关键词	Biomarkers; Budget control; Coastal engineering; Erosion; Forestry; Intelligent systems; Isotopes; Monte Carlo methods; Permafrost; Sedimentology; Submarine geology; Carbon fluxes; Carbon isotopic composition; Carbon sequestration; Coastal erosion; Marine sediments; Model-based OPC; Near-shore zones; radiocarbon; Organic carbon; biomarker; carbon budget; carbon isotope; carbon sequestration; coastal erosion; flux measurement; isotopic composition; marine sediment; nearshore environment; organic carbon; organic matter; permafrost; radiocarbon dating; sediment chemistry; Arctic Ocean; Beaufort Sea; Canada; Herschel Island; Yukon Territory
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170754
作者单位	Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany; Department of Geosciences and MARUM Centre for Marine Environmental Sciences, University Bremen, Bremen, Germany; Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Potsdam, Germany; Institute of Geosciences, Potsdam University, Potsdam, Germany
推荐引用方式 GB/T 7714	Grotheer H.,Meyer V.,Riedel T.,et al. Burial and Origin of Permafrost-Derived Carbon in the Nearshore Zone of the Southern Canadian Beaufort Sea[J],2020,47(3).
APA	Grotheer H..,Meyer V..,Riedel T..,Pfalz G..,Mathieu L..,...&Fritz M..(2020).Burial and Origin of Permafrost-Derived Carbon in the Nearshore Zone of the Southern Canadian Beaufort Sea.Geophysical Research Letters,47(3).
MLA	Grotheer H.,et al."Burial and Origin of Permafrost-Derived Carbon in the Nearshore Zone of the Southern Canadian Beaufort Sea".Geophysical Research Letters 47.3(2020).