Periglacial Landscape Evolution in Antarctic Lava Flows and Glacial Tills

该项目使用宇宙源核素测年和表面粗糙度的激光雷达研究，以了解南极干燥山谷的风化和地貌演变。这项工作的重点是两个过程：冻土的冷冻扰动和在古代熔岩流上形成有图案的冻土。该方法包括HE3分析的创新使用。研究结果还将用于了解干旱山谷的冰川历史。这对理解南极东部冰盖的历史和火星地貌的形成具有潜在的应用价值。更广泛的影响包括研究生教育。此外，这项工作可能有助于我们了解南极冰盖的历史，这对于模拟它们在全球气候变化期间的行为非常重要。

This project uses cosmogenic nuclide dating and LIDAR studies of surface roughness to understand weathering and landscape evolution in the Dry Valleys of Antarctica. The work focuses on two processes: cryoturbation of frozen soils and the development of patterned, frozen ground on ancient lava flows. The approach includes innovative uses of He3 profiling. Results will also be applied to understanding the glacial history of the Dry Valleys. There are potential applications to understanding the history of the East Antarctic Ice Sheet and the formation of Martian landscapes. The broader impacts include graduate student education. As well, the work may contribute to our understanding of the history of the Antarctic ice sheets, which is important to modeling their behavior during global climate change.