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Stability of the Junction of an Ice Sheet and an Ice Shelf
Open accessAbstract
An analysis is made of the steady-state size of a two-dimensional ice sheet whose base is below sea-level and which terminates in floating ice shelves. Under the assumption of perfect plasticity it is found that an ice sheet placed on a bed whose surface was initially flat cannot exist if the depth of the bed below sea-level exceeds a critical depth. If this depth is less than the critical level, the ice sheet extends out to the edge of the continental shelf. Similar results are found with more realistic assumptions about the laws governing the flow of ice. If the bed slopes away from the centre, the ice sheet can have a stable width that increases in value as the accumulation rate increases or as sea-level is lowered. It is not possible to decide whether or not the West Antarctic ice sheet is in stable equilibrium. It is entirely possible that this ice sheet is disintegrating at present, as suggested by Hughes.
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Cited by
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Rignot, E., Casassa, G., Gogineni, P., Krabill, W., Rivera, A., & Thomas, R. (2004) · Geophysical Research Letters · doi:10.1029/2004gl020697 · Cited by 773
Consequences of twenty-first-century policy for multi-millennial climate and sea-level change
Clark, P. U., Shakun, J. D., Marcott, S. A., Mix, A. C., Eby, M., Kulp, S., Levermann, A., Milne, G. A., Pfister, P. L., Santer, B. D., et al. (2016) · Nature Climate Change · doi:10.1038/nclimate2923 · Cited by 646
Interglacials of the last 800,000 years
Past Interglacials Working Group of PAGES (2016) · Reviews of Geophysics · doi:10.1002/2015rg000482 · Cited by 606
Late Weichselian Ice Sheet of Northern Eurasia
Grosswald, M. G. (1980) · Quaternary Research · doi:10.1016/0033-5894(80)90080-0 · Cited by 337
Metadata
- Authors
- Weertman, J.
- Venue
- Journal of Glaciology
- Publisher
- Cambridge University Press (CUP)
- Published
- 1974
- Volume
- 13
- Issue
- 67
- Pages
- 3-11
- ISSN
- 0022-1430 (ISSN-L)
- 1727-5652
- OpenAlex
- W92483960
- Cited by
- 913
- References
- 0
- FWCI
- 5.33
- Type
- journal article
- Language
- en
- Open access
- bronze
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