Flight path locations in Keyhole Markup Language (KML) format corresponding to radar echograms, Greenland, 2009.

To better understand processes affecting the ice sheets and to supply boundary condition information into ice sheet models and ice thickness for other ice sheet analysis, the Center for Remote Sensing of Ice Sheets (CReSIS) has designed, developed, and deployed several multichannel radar depth sounders in Greenland. This dataset contains data collected mostly around outlet glaciers in Greenland, including dense grids around Jakobshavn, Helheim, and Kangerlussuaq glacier channels, with the specific purpose of improving understanding in this dynamic and fast changing part of the ice sheet. These KML files show the location of each data frame and data segment for the radar echograms in the dataset. Files are named according to the formats: Browse_Data_{$segment_id}.kml and Browse_{$season_id}.kml. Only a few data points are included to allow for quick download and browsing. There is one KML file per segment and then one KML with all segments (entire season). The per segment files contain information per frame and more data points. The season file contains information for each segment and fewer data points. More information can be found in “Readme.pdf”.

为更深入理解影响冰盖的各类物理过程，并为冰盖模型提供边界条件数据、为其他冰盖相关分析提供冰厚参数，冰盖遥感中心（Center for Remote Sensing of Ice Sheets，CReSIS）已在格陵兰岛设计、研发并部署了多套多通道雷达测深系统。本数据集采集的数据主要分布于格陵兰岛的出口冰川周边区域，涵盖雅各布港冰川（Jakobshavn）、黑尔海姆冰川（Helheim）以及康格鲁苏阿克冰川（Kangerlussuaq）航道周边的高密度测网，其核心目标是深化对冰盖这片动态且快速变化区域的科学认知。本数据集内的KML文件用于标注雷达回波图各数据帧与数据段的空间位置，文件命名遵循以下格式：Browse_Data_{$segment_id}.kml 和 Browse_{$season_id}.kml。为实现快速下载与预览，文件仅包含少量数据点。每个独立数据段对应一份专属KML文件，另有一份整合了全季所有数据段的总KML文件。单数据段文件包含每帧数据的详细信息与更多数据点，而全季总文件仅收录各数据段的概要信息，数据点数量更少。更多详细信息可查阅"Readme.pdf"。