A Newly Digitised Ice-penetrating Radar Dataset Acquired over the Greenland Ice Sheet in 1971-1979

We present an ice-penetrating radar dataset acquired over the Greenland ice sheet by aircraft during the years 1971, 1972, 1974, 1978, and 1979. The dataset comprises over 177,000 km of flight lines and contains a wealth of information on the state of the Greenland ice sheet including information on ice thickness and englacial properties. During data collection in the 1970s, the data were recorded on optical film rolls and in this manuscript, we document the digitization of these film 5 rolls and their associated geographical information. Our digitization of the data enables interaction with and analysis of the data and facilitates comparison with modern-day radar observations. The complete dataset in full resolution with associated scanned notes is available here.本研究公开了一套于1971、1972、1974、1978及1979年间通过航空平台获取的格陵兰冰盖冰穿透雷达（ice-penetrating radar）数据集。该数据集涵盖超过17.7万千米的飞行测线，蕴含大量格陵兰冰盖状态相关信息，包括冰厚及冰内属性（englacial properties）数据。在20世纪70年代的数据采集阶段，原始数据被记录于光学胶片卷中；本文详细记述了这批胶片卷及其配套地理信息的数字化流程。本次数字化工作使得该数据集可被交互处理与分析，并为其与当代雷达观测结果的对比研究提供了便利。完整分辨率的完整数据集及配套扫描标注文件可在此处获取。