Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084789 |
Leveraging the Rapid Retreat of the Amundsen Gulf Ice Stream 13,000 Years Ago to Reveal Insight Into North American Deglaciation | |
Pico, T.1,2; Robel, A.3; Powell, E.1; Mix, A. C.4; Mitrovica, J. X.1 | |
2019-11-11 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:21页码:12101-12107 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We examine the influence of different deglacial histories of the North American ice saddle, which connected the Cordilleran ice sheet and western Laurentide ice sheet, on the stability of the fast-flowing Amundsen Gulf Ice Stream, located in the northwestern Laurentide ice sheet. We use a simplified marine-terminating ice stream model to simulate grounding line retreat and compare our predictions to geologic evidence for the rapid collapse of the Amundsen Gulf Ice Stream at 13 ka. We show that observations of ice stream retreat can be used to distinguish between past ice unloading histories, and that the rapid retreat of the Amundsen Gulf Ice Stream near 13 ka is most dynamically consistent with substantial deglaciation of the North American ice saddle from 13 to 11.5 ka, during the Younger Dryas cooling episode. These results suggest that short-lived changes in ice stream behavior may be used to reveal larger-scale and longer-duration ice sheet dynamics. |
英文关键词 | Glacial isostatic adjustment Marine ice sheet instability Deglaciation Ice stream Laurentide Ice Sheet |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000495633900001 |
WOS关键词 | POSTGLACIAL SEA-LEVEL ; MANTLE VISCOSITY ; SHEET ; EVENTS ; SLOPE ; OCEAN |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/224989 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 2.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 3.Georgia Tech, Sch Earth & Atmospher Sci, Atlanta, GA USA; 4.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA |
推荐引用方式 GB/T 7714 | Pico, T.,Robel, A.,Powell, E.,et al. Leveraging the Rapid Retreat of the Amundsen Gulf Ice Stream 13,000 Years Ago to Reveal Insight Into North American Deglaciation[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(21):12101-12107. |
APA | Pico, T.,Robel, A.,Powell, E.,Mix, A. C.,&Mitrovica, J. X..(2019).Leveraging the Rapid Retreat of the Amundsen Gulf Ice Stream 13,000 Years Ago to Reveal Insight Into North American Deglaciation.GEOPHYSICAL RESEARCH LETTERS,46(21),12101-12107. |
MLA | Pico, T.,et al."Leveraging the Rapid Retreat of the Amundsen Gulf Ice Stream 13,000 Years Ago to Reveal Insight Into North American Deglaciation".GEOPHYSICAL RESEARCH LETTERS 46.21(2019):12101-12107. |
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