| 项目编号: | 1745705
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| 项目名称: | RAPID: Surge of Negribreen, Svalbard |
| 作者: | Ute Herzfeld
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| 承担单位: | University of Colorado at Boulder
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| 批准年: | 2017
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| 开始日期: | 2017-09-01
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| 结束日期: | 2018-08-31
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| 资助金额: | 84953
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Polar
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| 英文关键词: | negribreen
; glacier
; project
; surge progression
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| 英文摘要: | Changes in the rate at which glaciers flow into the ocean are a source of uncertainty in estimates of future sea level rise. Surges are brief events during which these rates increase up to 100 times greater than the normal flow rate. Surges, which typically last between a few months and a few years on any given glacier, occur at intervals of decades to centuries. Therefore, few detailed observations of surges are available for study. Negribreen, one of the largest glaciers in Svalbard, has started to surge last summer. This project will collect different data sets that will be used with satellite data to characterize the surging glacier. The project will contribute to STEM workforce development by supporting the training of a graduate student and an undergraduate student. Observations from this project will be added to an existing website and to develop presentations for the K-12 community.
A combination of observations (laser altimetry, video, GPS data, photographs from small aircraft, and satellite data) and recently developed analysis approaches will be used to develop an understanding of glacier response (deformation, crevassing, acceleration, surge progression in the glacier system, elevation change and mass transfer) to surge dynamics. The principal investigator has been studying the 2011-2013 and 1993-1995 surges of the Bering-Bagley Glacier System, Alaska, using similar techniques and numerical modeling. Bering Glacier is a warm-based glacier and Negribreen a cold-based glacier. Results from the two systems will be compared and contrasted. It is anticipated that characteristics of surges common to different climate conditions may be isolated from those dependent upon specific environmental conditions. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89204
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Ute Herzfeld. RAPID: Surge of Negribreen, Svalbard. 2017-01-01.
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