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TC | Volume 12, issue 5
The Cryosphere, 12, 1615–1628, 2018
https://doi.org/10.5194/tc-12-1615-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
The Cryosphere, 12, 1615–1628, 2018
https://doi.org/10.5194/tc-12-1615-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 04 May 2018

Research article | 04 May 2018

How dynamic are ice-stream beds?

Damon Davies et al.
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Cited articles  
Aðalgeirsdóttir, G., Smith, A. M., Murray, T., King, M. A., Makinson, K., Nicholls, K. W., and Behar, A. E.: Tidal influence on Rutford Ice Stream, West Antarctica: observations of surface flow and basal processes from closely spaced GPS and passive seismic stations, J. Glaciol., 54, 715–724, 2008. 
Alley, R.: Water-pressure coupling of sliding and bed deformation: I. Water system, J. Glaciol., 35, 108–118, 1989. 
Alley, R., Cuffey, K., Evenson, E., Strasser, J., Lawson, D., and Larson, G.: How glaciers entrain and transport basal sediment: physical constraints, Quaternary Sci. Rev., 16, 1017–1038, 1997. 
Alley, R. B.: Continuity comes first: recent progress in understanding subglacial deformation, Geol. Soc. SP, 176, 171–179, 2000. 
Alley, R. B., Blankenship, D. D., Bentley, C. R. and Rooney, S. T.: Deformation of till beneath ice stream B, West Antarctica, Nature, 322, 57–59, 1986. 
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This paper investigates the dynamics of ice stream beds using repeat geophysical surveys of the bed of Pine Island Glacier, West Antarctica; 60 km of the bed was surveyed, comprising the most extensive repeat ground-based geophysical surveys of an Antarctic ice stream; 90 % of the surveyed bed shows no significant change despite the glacier increasing in speed by up to 40 % over the last decade. This result suggests that ice stream beds are potentially more stable than previously suggested.
This paper investigates the dynamics of ice stream beds using repeat geophysical surveys of the...
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