Margin Migration Rates and Margin Dynamics of the Siple Coast Ice Streams

0086997Truffer该奖项支持一个为期两年的项目，利用现有的速度和温度剖面，调查西普尔海岸冰流边缘区的动态。 将使用有限元方法对流场和应力场进行建模，并使用热机械模型来研究流场和温度场的耦合。 这些模型与观测到的速度剖面的直接比较将导致边缘的结构和边缘冰的软化的估计。 将调查的基础和边缘剪切应力的分布，导致估计的相对作用的床和边缘的整体力平衡的冰流。

0086997TrufferThis award supports a two year project to investigate the dynamics of the marginal zone of the Siple Coast ice streams using existing velocity and temperature profiles. The flow and stress fields will be modeled using finite element methods and a thermo-mechanical model will be used to investigate the coupling of the flow and temperature fields. Direct comparison of these models with the observed velocity profiles will lead to estimates of the structure of the margins and the softening of the marginal ice. The distribution of basal and marginal shear stress will be investigated, leading to an estimate of the relative roles of the bed and the margins in the overall force balance of the ice streams.