Constraints on the Dynamics of Temperate Ice Caps in Iceland from Radar Interferometry

雷达干涉测量对冰岛温带冰盖动力学的约束

• 批准号: 9813029
• 负责人: Mark Simons
• 金额: $ 29.59万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-12-01 至 2002-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9813029&HistoricalAwards=false
• 关键词: Constraints; Dynamics; Temperate; Ice; Caps

Abstract OPP-9813029Estimates have been made that the relatively small, temperate Iceland ice caps could respond to sensitive changes in climate that could occur in ten to one-hundred years. Refining an understanding of this high level of sensitivity requires very accurate estimates of glacial mass balance and changes in this balance over time. The small the Hofsjokull and Langjokull ice caps are ideal for high-resolution studies of ice mass using new numerical tools for three-dimensional ice flow modeling. The recently developed Interferometric Synthetic Aperture Radar (InSAR) measurements of the surface topography and velocity fields of glaciers have the potential to vastly improve our understanding of glacial and ice cap dynamics. InSAR's power lies in the combination of high spatial resolution over large geographic areas and its ability to observe the most remote areas on earth.

据估计，相对较小的温带冰岛冰盖可能会对十到一百年内可能发生的气候变化做出反应。 要想更好地理解这种高度的敏感性，就需要非常准确地估计冰川物质平衡以及这种平衡随时间的变化。霍夫斯冰盖和朗冰盖的小冰帽是使用三维冰流建模的新数值工具进行高分辨率冰量研究的理想选择。 最近开发的干涉合成孔径雷达（干涉合成孔径雷达）测量冰川的表面地形和速度场有可能大大提高我们对冰川和冰盖动态的理解。 干涉合成孔径雷达的强大之处在于，它既能在大范围的地理区域内实现高空间分辨率，又能观测地球上最偏远的地区。