Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula
Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula
复制标题
南极半岛北部詹姆斯罗斯岛冰流的形成、持续时间和变薄
DOI:
10.1016/j.quascirev.2013.11.012
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发表时间:
2014
影响因子:
4
通讯作者:
Glasser N
中科院分区:
文献类型:
--
作者:
Glasser N
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 and36Cl) 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 ∼18 ka, 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 ∼18 ka 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.
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DOI:
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发表时间:
2009
期刊:
影响因子:
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作者:
L. D. Nicola;C. Schnabel;K. Wilcken;K. Gméling
通讯作者:
K. Gméling
影响因子:
2.9
作者:
P. Skvarca;H. Rott;T. Nagler
通讯作者:
T. Nagler
DOI:
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发表时间:
1966
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影响因子:
--
作者:
P. Nelson
通讯作者:
P. Nelson
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
N. Glasser;S. Clemmens;C. Schnabel;Cassandra R. Fenton;Lanny R. McHargue
通讯作者:
Lanny R. McHargue
DOI:
--
发表时间:
2013
期刊:
--
影响因子:
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作者:
Hambrey, MJ
通讯作者:
Hambrey, MJ