High Resolution Radar Profiling of the Snow and Ice Stratigraphy beneath the ITASE Traverses, West Antarctic Ice Sheet

南极西部冰盖 ITASE 横断面下方冰雪地层的高分辨率雷达剖面图

• 批准号: 9814589
• 负责人: Steven Arcone
• 金额: $ 3.32万
• 依托单位: Department of Army Cold Regions Research & Engineering Lab
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814589&HistoricalAwards=false
• 关键词: Resolution; Radar; Profiling; Snow; Ice

This award supports a program of high resolution radar profiling of the snow and ice stratigraphy beneath the traverse routes in West Antarctica that will be part of the U.S. component of the International Trans-Antarctic Scientific Expedition (US ITASE). A coherent, short-pulse radar with a 400 MHz antenna will be the primary tool. The system will allow real time monitoring in a horizontally scrolled display and will provide exceptional vertical resolution (tens of centimeters) and a penetration depth on the order of 50-70 meters. The primary analysis tool will be simple data compression (stacking), which will reveal subtle deformational features and long distance trends. Advance crevasse detection will be one useful operational aspect of having this system along as part of the ITASE traverses. Isochronal continuity will be interpreted from the continuity in reflection horizons between core sites.

该奖项支持一项对南极洲西部穿越路线下方的冰雪地层进行高分辨率雷达剖面分析的计划，该计划将成为国际跨南极科学考察（US ITASE）美国部分的一部分。 主要工具将是一个具有400兆赫天线的相干短脉冲雷达。 该系统将允许在水平滚动显示中进行真实的时间监测，并将提供特殊的垂直分辨率（数十厘米）和50-70米量级的穿透深度。 主要的分析工具将是简单的数据压缩（叠加），这将揭示微妙的变形特征和长距离趋势。 作为ITASE穿越的一部分，该系统沿着的一个有用的操作方面是提前进行裂缝探测。 等时连续性将从岩心位置之间反射层位的连续性来解释。