The Topography and Flow of the Antarctic Ice Sheet ...

• Main Author: McIntyre, Neil F.
• Format: Thesis
• Language: English
• Published: Apollo - University of Cambridge Repository 1983
• Subjects: Antarc*; Antarctic; Ice Sheet
• Online Access: https://dx.doi.org/10.17863/cam.14156; https://www.repository.cam.ac.uk/handle/1810/268044

been used to investigate the form and topography of the Antarctic ice sheet and to relate these to the physical processes of ice flow and basal conditions. Topographic roughness typically increases towards the thin ice of coastal reg ions as surface undulation wav el eng ths decrease and amplitudes increase. Temperature and velocity variations also have significant effects. The coastal zone is punctuated by embayments of severe topography immediately inland of outlet glaciers. This topographic variability has been summarized in a statistical model for the purposes of simulating satellite radar altimeter waveforms. Consideration of the relationship between bedrock and surface profiles has shown that ice temperature is a major influence on the response of the surface to bedrock irregularities. Regional subglacial water layers may al so have an important effect on surface topography. A re-analysis of models of longitudinal stress grad i ents suggests that er ystal fabrics favouring faster flow develop with ...