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Multi-Channel Coherent Radar Depth Sounding of Jakobshavn Isbrae and its Catchment

机译：Jakobshavn Isbrae及其集水区的多通道相干雷达深度探测

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Glaciers and ice sheets play a significant role in climate research due to their potential effect on sea level rise. Scientists modeling ice sheets are currently limited by the lack of data for key study areas. One of the most important parameters controlling glacier flow is bed topography. For this reason, over the past five years the Center for Remote Sensing of Ice Sheets (CReSIS) has developed a series of airborne ice penetrating radar systems to aid in mapping bed topography. In 2008, CReSIS collected airborne radar data over a 320 km x 160 km grid in the Jakobshavn catchment, West Greenland, using a Multi-Channel Coherent Radar Depth Sounder. This data grid was processed using a synthetic aperture algorithm to perform along track migration. The resulting data set was loaded into Seismic Micro-Technology's Kingdom Suite Software package. The bed return, as well as several internal layers, was interpreted in order to produce a map for glacier modeling applications. We were able to image the main Jakobshavn Isbrae channel; in addition two tributary channels were discovered. The internal layer interpretation reveals evidence that ice flow within the catchment of Jakobshavn Isbrae differs significantly from what is predicted by most models.
机译：由于它们对海平面上升的潜在影响，冰川和冰板在气候研究中发挥着重要作用。模拟冰盖的科学家们目前受到关键研究领域缺乏数据的限制。控制冰川流量最重要的参数之一是床地形。出于这个原因，在过去的五年里，冰床（烹饪）的遥感中心开发了一系列空中冰穿透雷达系统，以帮助绘制床地形。 2008年，使用多通道相干雷达深度发声器，射流收集了jakobshavn集水区的320 km x 160 km网格中的空中雷达数据。使用合成孔径算法处理该数据网格以沿着轨道迁移执行。由此产生的数据集装入地震微观技术的王国套件软件包中。床返回以及几个内层被解释为为冰川建模应用程序生产地图。我们能够以jakobshavn isbrae频道形象形象;此外，还发现了两个支流渠道。内部层解释揭示了jakobshavn Isbrae集水区内的冰流量与大多数模型预测的冰流量显着不同。

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