DOI: 10.1002/2016GL069253
论文题名: Decoupled sedimentary records of combustion: Causes and implications
作者: Hanke U.M. ; Eglinton T.I. ; Braun A.L.L. ; Reddy C.M. ; Wiedemeier D.B. ; Schmidt M.W.I.
刊名: Geophysical Research Letters
ISSN: 0094-9613
EISSN: 1944-9344
出版年: 2016
卷: 43, 期: 10 起始页码: 5098
结束页码: 5108
语种: 英语
英文关键词: aquatic sediments
; decoupled pyrogenic carbon records
; local and regional sources
; organic carbon cycling
; transport pathways
Scopus关键词: Budget control
; Combustion
; Fossil fuels
; Fuels
; Organic carbon
; Aquatic sediments
; Decoupled pyrogenic carbon records
; Organic carbon cycling
; Regional sources
; Transport pathways
; Sedimentology
; aquatic ecosystem
; biomass burning
; carbon cycle
; combustion
; concentration (composition)
; deposition
; fossil fuel
; organic carbon
; regional geology
; sediment
; sediment transport
; temporal record
英文摘要: Pyrogenic carbon (PyC) is a collective term for carbon-rich residues comprised of a continuum of products arising from biomass burning and fossil-fuel combustion. PyC is ubiquitous in the environment where it can be transported by wind and water before being deposited in aquatic sediments. We compare results from four different methods used to trace PyC that were applied to a high-temporal resolution sedimentary record in order to constrain changes in PyC concentrations and fluxes over the past ~250 years. We find markedly discordant records for different PyC tracers, particularly during the preindustrial age, implying different origins and modes of supply of sedimentary PyC. In addition to providing new insights into the composition of sedimentary combustion products, this study reveals that elucidation of past combustion processes and development of accurate budgets of PyC production and deposition on local to regional scales requires careful consideration of both source characteristics and transport processes. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971668088&doi=10.1002%2f2016GL069253&partnerID=40&md5=73041e15fc1b9f9f3f5556705a556cab
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10576
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Geography, University of Zurich, Zürich, Switzerland
Recommended Citation:
Hanke U.M.,Eglinton T.I.,Braun A.L.L.,et al. Decoupled sedimentary records of combustion: Causes and implications[J]. Geophysical Research Letters,2016-01-01,43(10).