DOI: 10.1002/2015GL067108
论文题名: Coeval fluctuations of the Greenland ice sheet and a local glacier, central East Greenland, during late glacial and early Holocene time
作者: Levy L.B. ; Kelly M.A. ; Lowell T.V. ; Hall B.L. ; Howley J.A. ; Smith C.A.
刊名: Geophysical Research Letters
ISSN: 0094-9368
EISSN: 1944-9099
出版年: 2016
卷: 43, 期: 4 起始页码: 1623
结束页码: 1631
语种: 英语
英文关键词: 10Be dating
; Greenland
; late glacial
; moraines
; Preboreal
; Younger Dryas
Scopus关键词: Climate change
; Glacial geology
; Glaciers
; Snow
; <sup>10</sup>Be dating
; Greenland
; Late glacial
; Moraines
; Preboreal
; Younger Dryas
; Ice
; bedrock
; beryllium isotope
; chronology
; glacier dynamics
; ice core
; late glacial
; moraine
; Preboreal
; seasonality
; Younger Dryas
; Arctic
; East Greenland
; Greenland
; Greenland Ice Sheet
英文摘要: We present a 10Be chronology of late glacial to early Holocene fluctuations of a Greenland ice sheet outlet glacier and the adjacent Milne Land ice cap in central East Greenland. Ages of boulders on bedrock indicate that both ice masses receded during the Younger Dryas (YD), likely due to rising summer temperatures. Since Greenland ice core records register cold mean annual temperatures throughout the YD, these ice-marginal data support climate conditions characterized by strong seasonality. The ice sheet outlet glacier and ice cap deposited inner Milne Land Stade moraines at 11.4 ± 0.8 ka and 11.4 ± 0.6 ka, respectively (mean moraine ages and 1σ uncertainties). Based on the coeval moraine ages, we suggest that both ice masses responded to climate conditions acting on the ice margins, specifically ablation. Moreover, the ice sheet responded sensitively (i.e., on the same time scale as a small ice cap) to climate conditions. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975780420&doi=10.1002%2f2015GL067108&partnerID=40&md5=2ca703a1e88f3988c3fa9d1bfeb9e1d1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10331
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 Geoscience, Aarhus University, Høegh-Guldbergs Gade 2, Aarhus, Denmark
Recommended Citation:
Levy L.B.,Kelly M.A.,Lowell T.V.,et al. Coeval fluctuations of the Greenland ice sheet and a local glacier, central East Greenland, during late glacial and early Holocene time[J]. Geophysical Research Letters,2016-01-01,43(4).