DOI: 10.1016/j.quascirev.2014.02.005
Scopus记录号: 2-s2.0-84899927805
论文题名: Neoglacial ice expansion and late Holocene cold-based ice cap dynamics on Cumberland Peninsula, Baffin Island, Arctic Canada
作者: Margreth A. ; Dyke A.S. ; Gosse J.C. ; Telka A.M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 91 起始页码: 242
结束页码: 256
语种: 英语
英文关键词: Cold-based ice
; Little Ice Age
; Neoglacial
; Radiocarbon dating
Scopus关键词: Climate models
; Sea ice
; Snow
; Solar energy
; Volcanoes
; Little Ice Age
; Medieval Warm Period
; Neoglacial
; Polythermal glaciers
; Radiocarbon dating
; Regional climate
; Regional expansion
; Volcanic eruptions
; Expansion
; Bryophyta
英文摘要: Radiocarbon dating of fossil flora and fauna collected along receding cold-based ice caps and cold-based sections of polythermal glaciers on Cumberland Peninsula reveal insights into Neoglacial ice expansion and late Holocene ice dynamics. The taphonomic advantages of subfossilized moss were exploited to precisely document regional expansions of ice caps through the late Holocene. When compared with climate proxies and records of volcanic eruptions, the moss radiocarbon age distributions indicate i) onset of Neoglaciation shortly after 5ka, concomitant with increased sea ice cover, ii) intensification of ice expansion between 1.9 and 1.1ka, followed by halt of ice growth, or ice recession during the Medieval Warm Period, and iii) renewed ice expansion after 0.8ka, in response to cooling related to a combination of large volcanic eruptions and low solar activity. Overall, the observations support a model of near-instantaneous glacial response to regional climate controls and that these responses were synchronous throughout eastern Canadian Arctic and possibly eastern Greenland. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60318
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Sciences, Dalhousie University, Halifax, NS B3H 4R2, Canada; Geological Survey of Canada, 601 Booth Street, Ottawa, ON K1A 0E8, Canada; PALEOTEC Services, Ottawa, ON, Canada
Recommended Citation:
Margreth A.,Dyke A.S.,Gosse J.C.,et al. Neoglacial ice expansion and late Holocene cold-based ice cap dynamics on Cumberland Peninsula, Baffin Island, Arctic Canada[J]. Quaternary Science Reviews,2014-01-01,91