Derived Quantities: A Coupled Dynamic/Thermodynamic Ice Sheet Model

该奖项是对一项研究计划的支持，该计划涉及使用反向建模从测量的冰盖形状中获得信息，从而产生关于冰床和冰柱内条件的重要信息。建议将柱平均模型转换为柱积分模型，该模型显式地考虑了内部热力学和依赖于该内部温度场的材料性质的变化。现有的有限元三维温度解算器将与现有的有限元映射平面连续性解算器相耦合。结果将允许在模型假设的范围内对现有外地数据进行更详细的分析。这个改进的模型将被用来推导描述南极冰盖基本条件的数量，特别关注大陆边缘周围冰流的行为。

This award is for support for a program of research involving the use of inverse modeling to derive information from the measured configuration of an ice sheet to yield important information about the conditions both at the bed and within the ice column. It is proposed to convert a column-averaged model to a column- integrated model that accounts explicitly for internal thermodynamics and variations of material properties that depend on this internal temperature field. An existing finite-element 3- D temperature solver will be coupled with an existing finite- element map-plane continuity solver. The result will allow more detailed analysis of existing field data within the context of the assumptions of the model. This improved model will be used to derive quantities describing the basal conditions of the Antarctic ice sheet, with particular focus on the behavior of ice streams around the margin of the continent.