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Margin Migration Rates and Margin Dynamics of the Siple Coast Ice Streams

Margin Migration Rates and Margin Dynamics of the Siple Coast Ice Streams
单海岸冰流的边缘迁移速率和边缘动态
批准号：
0086997
负责人：
Martin Truffer
金额：
$17.62万
依托单位：
University of Alaska Fairbanks Campus
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2001
资助国家：
美国
项目状态：
已结题
起止时间：
2001-08-01 至 2004-07-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0086997&HistoricalAwards=false
关键词：
MarginMigrationRatesDynamicsSiple

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英文摘要
0086997TrufferThis award supports a two year project to investigate the dynamics of the marginal zone of the Siple Coast ice streams using existing velocity and temperature profiles. The flow and stress fields will be modeled using finite element methods and a thermo-mechanical model will be used to investigate the coupling of the flow and temperature fields. Direct comparison of these models with the observed velocity profiles will lead to estimates of the structure of the margins and the softening of the marginal ice. The distribution of basal and marginal shear stress will be investigated, leading to an estimate of the relative roles of the bed and the margins in the overall force balance of the ice streams.
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