The Measurement of Temperature in the Margin of Ice Stream B, Antarctica, and its Interpretation

南极冰流B边缘温度测量及其解释

• 批准号: 9117911
• 负责人: William Harrison
• 金额: $ 47.06万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-15 至 1995-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117911&HistoricalAwards=false
• 关键词: Measurement; Temperature; Margin; Ice; Stream

This award is for support of a project to investigate the mechanics acting at the margins of Ice Stream B, Antarctica. An analysis of existing temperature data near the center of the ice stream and of surface shear strain rate at its margins indicates that strain heating in the margins should be easily measurable in holes of 300 to 400 m depth. Temperature will be measured in a line of hot water drilled holes bracketing one of the margins, and interpreted in terms of strain heating, possible strain softening of the marginal ice, the shear stress acting on the ice stream, the history of the ice stream, and the stability of the margins. A secondary objective is to confirm the existence of diurnal variation in the vertical straining of the ice, which was previously observed on Ice Stream B.

这个奖项是为了支持一个项目，以调查 南极洲冰流B边缘的力学作用。 分析了现有的温度数据中心附近的 冰流和表面剪切应变率在其 边缘表明边缘的应变加热应 可在300至400米深的钻孔中轻松测量。 温度将被测量在一条线的热水钻孔 孔包围其中一个利润率，并解释在 在应变加热方面， 边缘冰，作用于冰流的剪切应力， 冰流的历史和边缘的稳定性 第二个目标是确认昼夜的存在， 冰的垂直应变的变化，这是 之前在冰流B上观察到的。