Numerical Studies on the Onset of, and Controls on Fast Streaming Flow

快速流发生和控制的数值研究

• 批准号: 9017445
• 负责人: Cornelis van der Veen
• 金额: $ 9万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-15 至 1994-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017445&HistoricalAwards=false
• 关键词: Numerical; Studies; Onset; Controls; Fast

This award is for support of a numerical modeling study to investigate processes and mechanisms that lead to the onset and demise of ice streams. The stability of the West Antarctic ice streams to changes in climate and perturbations at the ice shelf boundary will also be assessed. The project involves development of a two- dimensional map-view model of an ice stream. Processes to be incorporated into the model include calculation of basal temperatures, basal sliding, deformation of sub-glacial till, and the ice shelf/ice stream interaction. By imposing perturbations and/or special basal conditions, and computing the time evolution of the model ice sheet, the importance of each mechanism, as well as their mutual interactions, can be assessed.

该奖项旨在支持数值模拟研究，以调查导致冰流发生和消亡的过程和机制。 还将评估南极西部冰流对气候变化和冰架边界扰动的稳定性。 该项目涉及开发冰流的二维地图视图模型。 纳入模型的过程包括计算基础温度、基础滑动、冰下碛物变形以及冰架/冰流相互作用。 通过施加扰动和/或特殊的基础条件，并计算模型冰盖的时间演化，可以评估每种机制的重要性以及它们之间的相互作用。