| Summary: | 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. Using this radar dataset, various manual and semi-automated techniques are used to track the ice surface and ice bottom in the echogram data products. The ice surface and ice bottom are stored in Mathworks MATLABformat files. When the ice surface and ice bottom could not be tracked because the imagery was not good enough, the values are replaced with a not-a-number (“NaN”). Files are named according to the format: Data_{$frame_id}.mat. For each data frame there is a layer data file. This file contains the full layer information for the ice surface, ice bottom and any other layers that have been picked and is required by the image browser/layer picker. More information can be found in “Readme.pdf”.
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