odel Studies of Radar Internal Layering in West ntarctic Ice Streams

这一奖项是为了支持一项可行性研究，该研究旨在调查是否可以解释西普尔海岸冰流雷达数据中记录的内部分层，以提供有关冰流中从正常冰盖流动到流动流动的转变的信息。将使用基于Whillans和Johnsen(1983)的稳态分析模型的近似以及简单的几何数值模拟的方法来模拟内部层中褶皱的产生和平流。将对最近获得的数据进行分析，目的是确定在过渡区运作的进程的规模。使用该技术指导进一步研究的实用性或可行性将得到检验。如果成功，这种方法是研究鲜为人知的冰流过渡区的一种低成本手段。

This award is for support of a feasibility study to investigate whether the internal layering, as recorded in radar data from the Siple Coast ice streams, can be interpreted to yield information about the transition from normal ice sheet flow to streaming flow in the ice streams. A methodology for modeling the production and advection of folds in internal layers, using approximations based on steady state analytic models of Whillans and Johnsen (1983), and on simple geometic numerical modeling will be used. Recently acquired data will be analyzed with the objective of determining the scale of the processes operating in the transition zone. The practicality or feasibility of using the technique to guide further research will be examined. If successful, this approach represents a low-cost means of investigating the poorly known transition zones of the ice streams.