globalchange  > 气候变化与战略
DOI: 10.1007/s10933-020-00111-7
论文题名:
Effects of climate variability on mercury deposition during the Older Dryas and Younger Dryas in the Venezuelan Andes
作者: Schneider L.; Cooke C.A.; Stansell N.D.; Haberle S.G.
刊名: Journal of Paleolimnology
ISSN: 9212728
出版年: 2020
卷: 63, 期:3
语种: 英语
英文关键词: Allerød ; Anteojos ; Bølling ; Global warming ; Hg ; Older Dryas ; Younger Dryas
Scopus关键词: Bolling ; climate variation ; concentration (composition) ; deglaciation ; global warming ; headwater ; Holocene ; mercury (element) ; Older Dryas ; sediment core ; Younger Dryas ; Andes ; Venezuela
英文摘要: We present a high-resolution record of Late Glacial and Early Holocene mercury (Hg) accumulation within the sediments of Laguna de Los Anteojos, a small headwater alpine lake in Venezuela. Our sediment core spans the Older Dryas (OD) and Younger Dryas (YD) climate reversals, providing new insight into the effects of abrupt climatic transitions on atmospheric Hg deposition. Sediment Hg concentrations and accumulation rates (fluxes) increased sharply after regional deglaciation and then peaked immediately prior to onset of both the OD and YD. Mercury concentrations and fluxes then decreased through cold OD and YD conditions. Both Hg concentrations and fluxes increased rapidly with warming, rising two-fold in about 100 years after the OD and nearly four-fold in about 500 years during the latter-half of the YD. This lake-sediment record of Hg dynamics during the Glacial–Holocene transition suggests atmospheric Hg cycling is affected by abrupt climate change. Graphical abstract: [Figure not available: see fulltext.] © 2020, Springer Nature B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159074
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作者单位: Department of Archaeology and Natural History, School of Culture, History and Language, ANU College of Asia and the Pacific, The Australian National University, Canberra, ACT 2601, Australia; ARC Centre of Excellence for Australian Biodiversity and Heritage, The Australian National University, Canberra, ACT 2601, Australia; Department of Earth and Atmospheric Science, University of Alberta, Edmonton, AB T6G 2E3, Canada; Department of Geology and Environmental Geosciences, Northern Illinois University, De Kalb, IL 60115, United States

Recommended Citation:
Schneider L.,Cooke C.A.,Stansell N.D.,et al. Effects of climate variability on mercury deposition during the Older Dryas and Younger Dryas in the Venezuelan Andes[J]. Journal of Paleolimnology,2020-01-01,63(3)
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