Abstract:
The data set contains values of basal slipperiness (C) and the rate factor (A) for the whole of the Antarctic Ice Sheet.
The slipperiness was estimated through model inversion from measurements of surface velocities (1) and ice thickness (2) using the ice-flow model Ua (3).
The ice was assumed to deform according to Glen's flow law with a stress exponent n=3.
Basal sliding was assumed to follow Weertman sliding law with m=3, with u_b = C tau^m, where u_b is the basal sliding velocity and tau the (tangential) basal traction.
Keywords:
Gudmundsson, G. (2016). Basal slipperiness and englacial rate factor of the Antarctic Ice Sheet (Version None) [Data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK.. https://doi.org/10.5285/5987dbff-5028-4cd5-aab9-2a490d81dec1
| Access Constraints: | Data released under Open Government Licence 3. http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3 |
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| Creation Date: | 2016-08-04 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
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| Personnel: | |
| Name | Dr G H Gudmundsson |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Polar D Centre |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | 1. Rignot, E., Mouginot, J. & Scheuchl, B. Ice flow of the Antarctic ice sheet. Science 333, 1427?1430 (2011). DOI:10.1126/science.1208336. 2. Fretwell, P. et al. Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica. Cryosphere 7, 375-393 (2013). DOI:10.5194/tc-7-375-2013. 3. Gudmundsson, G. H. Ice-shelf buttressing and the stability of marine ice sheets. Cryosph. 7, 647-655 (2013). DOI:10.1073/pnas.1512482112. |
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