DOI: 10.1002/2013GL059068
论文题名: Aged black carbon in marine sediments and sinking particles
作者: Coppola A.I. ; Ziolkowski L.A. ; Masiello C.A. ; Druffel E.R.M.
刊名: Geophysical Research Letters
ISSN: 0094-10194
EISSN: 1944-9925
出版年: 2014
卷: 41, 期: 7 起始页码: 2427
结束页码: 2433
语种: 英语
英文关键词: abyssal sediments
; benzene polycarboxylic acid method
; black carbon
; compound specific radiocarbon analysis
; sedimentary organic carbon
; Station M
Scopus关键词: Estimation
; Sedimentology
; Submarine geology
; Benzene polycarboxylic acids
; Black carbon
; Dissolved organic carbon
; Particulate organic carbon
; Radiocarbon analysis
; Sinking particles
; Station M
; Transport mechanism
; Sediments
; abyssal zone
; biomass
; black carbon
; burial (geology)
; carbon isotope
; dissolved organic carbon
; marine sediment
; particulate organic carbon
; resuspension
; sediment chemistry
; sorption
; Pacific Ocean
; Pacific Ocean (Northeast)
英文摘要: We report measurements of oceanic black carbon (BC) to determine the sources of BC to abyssal marine sediments in the northeast Pacific Ocean. We find that the average 14C age of BC is older (by 6200 ± 2200 14C years) than that of the concurrently deposited non-BC sedimentary organic carbon. We investigate sources of aged BC to sediments by measuring a sample of sinking particulate organic carbon (POC) and find that POC may provide the main transport mechanism of BC to sediments. We suggest that aged BC is incorporated into POC from a combination of resuspended sediments and sorption of ancient dissolved organic carbon BC onto POC. Our BC flux estimate represents ~8-16% of the global burial flux of organic carbon to abyssal sediments and constitutes a minimum long-term removal estimate of 6-32% of biomass-derived BC using the present day emission flux. Key Points Multipool black carbon data set of Δ14C values, BC/OC%, and BPCA abundances A significant fraction of biomass-derived BC is transported to sediments by particulate organic carbon Our BC flux estimate represents ∼8-16% of the global OC burial flux to sediments © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897120655&doi=10.1002%2f2013GL059068&partnerID=40&md5=8733ee96b4f2864355781732d164e69b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7458
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Coppola A.I.,Ziolkowski L.A.,Masiello C.A.,et al. Aged black carbon in marine sediments and sinking particles[J]. Geophysical Research Letters,2014-01-01,41(7).