DOI: 10.1016/j.quascirev.2013.11.012
Scopus记录号: 2-s2.0-84892839474
论文题名: Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula
作者: Glasser N.F. ; Davies B.J. ; Carrivick J.L. ; Rodés A. ; Hambrey M.J. ; Smellie J.L. ; Domack E.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 86 起始页码: 78
结束页码: 88
语种: 英语
英文关键词: Antarctica
; Cosmogenic isotope dating
; Ice streams
Scopus关键词: Antarctic ice sheets
; Antarctic Peninsula Ice Sheet
; Antarctica
; Cosmogenic isotopes
; Dynamical behaviours
; Eustatic sea-level rise
; Ice streams
; Last Glacial Maximum
; Climate change
; Glacial geology
; Glaciers
; Isotopes
; Landforms
; Sea level
; Ice
; age determination
; climate change
; dating method
; ice
; isotopic analysis
; Last Glacial Maximum
; sea level change
; Antarctica
; James Ross Island
; West Antarctica
英文摘要: Predicting the future response of the Antarctic Ice Sheet to climate change requires an understanding of the ice streams that dominate its dynamics. Here we use cosmogenic isotope exposure-age dating (26Al, 10Be and 36Cl) of erratic boulders on ice-free land on James Ross Island, north-eastern Antarctic Peninsula, to define the evolution of Last Glacial Maximum (LGM) ice in the adjacent Prince Gustav Channel. These data include ice-sheet extent, thickness and dynamical behaviour. Prior to ~18ka, the LGM Antarctic Peninsula Ice Sheet extended to the continental shelf-edge and transported erratic boulders onto high-elevation mesas on James Ross Island. After ~18ka there was a period of rapid ice-sheet surface-lowering, coincident with the initiation of the Prince Gustav Ice Stream. This timing coincided with rapid increases in atmospheric temperature and eustatic sea-level rise around the Antarctic Peninsula. Collectively, these data provide evidence for a transition from a thick, cold-based LGM Antarctic Peninsula Ice Sheet to a thinner, partially warm-based ice sheet during deglaciation. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60390
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geography and Earth Sciences, Aberystwyth University, Wales SY23 3DB, United Kingdom; School of Geography, University of Leeds, LS2 9JT, United Kingdom; SUERC, East Kilbride, United Kingdom; Department of Geology, University of Leicester, University Road, Leicester LE1 7RH, United Kingdom; Department of Geosciences, Hamilton College, Clinton, NY 13323, United States
Recommended Citation:
Glasser N.F.,Davies B.J.,Carrivick J.L.,et al. Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula[J]. Quaternary Science Reviews,2014-01-01,86