Abstract
Model simulations of the West Antarctic ice sheet suggest that sporadic, perhaps chaotic, collapse (complete mobilization) of the ice sheet occurred throughout the past one million years. The irregular behaviour is due to the slow equilibration time of the distribution of basal till, which lubricates ice-sheet motion. This nonlinear response means that predictions of future collapse of the ice sheet in response to global warming must take into account its past history, and in particular whether the present basal till distribution predisposes the ice sheet towards rapid change.
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References
Chappell, J. & Shackleton, N. J. Nature 324, 137–140 (1986).
Letreguilly, A. et al. J. Glaciol. 37, 149–157 (1991).
Hughes, T. Rev. Geophys. Space Phys. 13, 502–526 (1975).
Lambeck, K. & Nakada, M. Nature 357, 125–128 (1992).
Denton, G. H. et al. Quat. Res. 31, 151–182 (1989).
Scherer, R. P. Palaeogeogr. Palaeoclimatol. Palaeoecol. 90, 395–412 (1991).
Lorius, C., Raisbeck, G., Jouzel, J. & Raynaud, D. The Environmental Record in Glaciers and Ice Sheets (eds Oeschger, H. & Langway, C. C. Jr) 343–361 (Wiley, Chichester, 1989).
Shackleton, N. J. Quat. Sci. Rev. 6, 183–190 (1987).
Alley, R. B. et al. Nature 322, 57–59 (1986).
Huybrechts, P. Clim. Dynam. 5, 79–92 (1990).
MacAyeal, D. R. J. geophys. Res. 94, 4071–4087 (1989).
MacAyeal, D. R. & Lange, M. A. J. Glaciol. 34, 128–135 (1988).
Huybrechts, P. Ber. Polarforsch. 99 (1992).
Lindstrom, D. Paleoceanography 5, 207–227 (1990).
Lingle, C. S. & Clark, J. A. J. geophys. Res. 90, 1100–1114 (1985).
MacAyeal, D. R. & Thomas, R. H. J. Glaciol. 32, 72–86 (1986).
MacAyeal, D. R. J. geophys. Res. 97, 595–603 (1992).
Engelhardt, H. et al. Science 248, 57–59 (1990).
Kamb, B. J. geophys. Res. 96, 16585–16595 (1991).
Alley, R. B. et al. J. geophys. Res. 92, 8931–8940 (1987).
Boulton, G. S. & Hindmarsh, R. C. A. J. geophys. Res. 92, 9059–9082 (1987).
Alley, R. B. et al. J. geophys. Res. 92, 8921–8929 (1987).
Fortuin, J. P. F. & Oerlemans, J. Ann. Glaciol. 14, 78–84 (1990).
Broecker, W. et al. Clim. Dynam. 6, 265–273 (1992).
Thomas, R. H. et al. Nature 277, 355–358 (1979).
Blankenship, D. D. et al. Nature 322, 54–57 (1986).
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MacAyeal, D. Irregular oscillations of the West Antarctic ice sheet. Nature 359, 29–32 (1992). https://doi.org/10.1038/359029a0
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DOI: https://doi.org/10.1038/359029a0
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