| Although ice streams have long been proposed within the Newfoundland Ice Cap, this work confirms, for the first time, ice stream operation within terrestrial areas. Through the application of a multi-scale mapping approach several ice stream footprints were identified and characterized. These footprints are characterized by convergence of elongated flow-parallel landforms including drumlins, mega flutes, and crag-and-tail hills. Detailed investigation of the Exploits Ice Stream showed that variations in landform morphology mimic predicted velocity fields within ice steams. All flow sets are characterized by generally thin sediment cover and typically display some form of topographic control, suggesting that topography was more important in controlling ice stream location than the presence of a soft deformable bed. Investigation of landform mapping procedures using Shuttle Radar Topography Mission (SRTM) digital elevation models and aerial photographs, shows that while not as detailed, mapping from SRTM DEMs was able to produce landform maps showing trends similar to those identified on aerial photographs, highlighting their use in reconnaissance level landform mapping. |
