Radar Studies of Internal Stratigraphy and Bedrock Topography along the US ITASE Traverse

该奖项支持国际跨南极科学考察（US ITASE）的美国组成部分的内部地层学和基岩地形的雷达研究项目。该雷达将提供有关冰层厚度和内层结构的即时信息，以帮助在穿越过程中选择核心地点。这些数据也将有助于在较不频繁的时间间隔内规划较深的千年尺度岩心的定位，以及为未来规划的较深内陆岩心的位置选择。除了沿着导线路线连续覆盖外，还将对每个核心位置周围的网格进行更详细的研究，以更好地表征每个区域的堆积和基岩地形。该建议是对寒冷地区研究与工程实验室（CRREL）提交的建议的补充，CRREL建议使用高频雷达检查记录的较浅部分，深度约为60米，包括近地表裂缝的存在。本文提出的雷达在60米以下的深度最敏感，可以描绘深基岩和内层到冰厚度的很大一部分。

This award supports a program of radar studies of internal stratigraphy and bedrock topography along the traverses for the U.S. component of the International Trans-Antarctic Scientific Expedition (US ITASE). The radar will provide information immediately available in the field on ice thickness and internal layer structure to help in the selection of core sites as the traverse proceeds. These data will also be useful in siting deeper millennial scale cores planned at less frequent intervals along the traverse, and in the selection of the location for the deep inland core planned for the future. In addition to continuous coverage along the traverse route, more detailed studies on a grid surrounding each of the core locations will be made to better characterize accumulation and bedrock topography in each area. This proposal is complimentary to the one submitted by the Cold Regions Research and Engineering Laboratory (CRREL), which proposes a high frequency radar to examine the shallower portion of the record down to approximately 60 meters, including the presence of near-surface crevasses. The radar proposed herein is most sensitive at depths below 60 meters and can depict deep bedrock and internal layers to a substantial fraction of the ice thickness.