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Can Relict Crevasse Plumes on Antarctic Ice Shelves Reveal a History of Ice-Stream Fluctuation?

  • D. R. MacAyeal (a1), R. A. Bindschadler (a2), K. C. Jezek (a3) and S. Shabtaie (a4)

Abstract

Configurations of relict surface-crevasse bands and medial moraines that emanate from the shear margins of ice streams are simulated, using a numerical model of an ideal rectangular ice shelf to determine their potential for recording a past ice-stream discharge chronology.

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References

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Batchelor, G. K. 1967 An introduction to fluid dynamics. Cambridge, Cambridge University Press.
Crabtree, R. D. Doake, C. S. M.. 1986 Radio–echo investigations of Ronne Ice Shelf. Ann. Glaciol., 8, 3741.
Doake, C.S.M. 1981 Tracing particle paths in the Antarctic ice sheet. J. Glaciol., 27(97), 483486.
Jezek, K. C. 1984 Recent changes in the dynamic condition of the Ross Ice Shelf, Antarctica. J. Geophys. Res., 89(B1), 409416.
Lange, M. A. MacAyeal, D. R.. 1988 Numerical models of steady–state thickness and basal ice configurations of the central Ronne Ice Shelf, Antarctica. Ann. Glaciol., 11, 6470.
MacAyeal, D. R. 1987 Ice–shelf back pressure: form drag versus dynamic drag. In Veen van der, C. J.,Oerlemans, J., eds. Dynamics of the West Antarctic Ice Sheet. Proceedings of a Workshop held in Utrecht. May 6–8. 1985. Dordrecht, etc., D. Reidel Publishing Company, 141160.
Rose, K. E. 1979 Characteristics of ice flow in Marie Byrd Land, Antarctica. J. Glaciol., 24(90), 6375.
Shabtaie, S. Bentley, C. R.. 1987 West Antarctic ice streams draining into the Ross Ice Shelf: configuration and mass balance. J. Geophys. Res., 92(B2), 13111336.

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