Seasonal variations in subglacial traction: Case study of Hofsjokull ice cap

冰下牵引力的季节变化：霍夫斯冰原冰盖的案例研究

• 批准号: 2436124
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2436124
• 关键词: Seasonal; variations; subglacial; traction; Case

This project will combine fine-resolution, time-dependent surface velocity measurements of the Hofsjokull ice cap in Iceland with simplified modelling of ice flow over a visco-plastic till to understand the seasonal variations exhibited in surface ice velocity. Emphasis will be placed on using simplified models of subglacial hydrology to understand the variability of till properties and hence the basal traction in response to recorded hydrological forcing. In addition, an understanding of the mobilised till will be used to evaluate the long-term erosion of glacial landforms.

该项目将联合收割机将冰岛霍夫冰盖的高分辨率、随时间变化的表面速度测量与粘塑性冰碛上冰流的简化建模相结合，以了解表面冰速度的季节变化。重点将放在使用冰下水文的简化模型，以了解的变化，直到属性，因此在记录的水文强迫的基础牵引。此外，对活动冰碛物的了解将用于评估冰川地貌的长期侵蚀。