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Force Budget: II. Application to Two-Dimensional Flow along Byrd Station Strain Network, Antarctica

  • C.J. Van Der Veen (a1) and I.M. Whillans (a2)

Abstract

Resistive stresses and velocities at depth are calculated along the Byrd Station Strain Network, Antarctica, using field data. There are found to be large longitudinal variations in basal drag and this result is little affected by errors in the input data or by uncertainties in the constitutive relation for ice. Basal drag varies by a factor of about 2 along the strain network, and is usually equal to the driving stress to within 10–20%. Sites of high drag are not always correlated with basal topographic highs, indicating that some process such as basal water drainage is involved in controlling the friction at the bed. Basal sliding velocities are very sensitive to errors in measured surface velocities and the rate factor in Glen’s flow law. As a result, calculated sliding velocities are much less reliable than deep stresses, and need to be interpreted with caution.

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Copyright

COPYRIGHT: © International Glaciological Society 1989

References

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Bindschadler, R.A. Stephenson, S.N. MacAyeal, D.R. Shabtaie, S.. 1987 Ice dynamics at the mouth of Ice Stream B, Antarctica. J. Geophys. Res., 92(B9), 8885–8894.
Jensen, D. 1985 Determination of the flow properties at Dye 3, south Greenland, by bore–hole–tilting measurements and perturbation modelling. J. Glaciol., 31 (108), 92–98.
Dewart, G. Whillans, I.. 1970 Geophysical and glaciological studies along the Byrd Station Strain Net, 1969–70. Antarct. J. U.S. 5(4), 111–112.
Doake, C.S.M. Wolff, E.W.. 1985 Flow law for ice in polar ice sheets. Nature, 314(6008), 255–257.
Frolich, R.M. Mantripp, D.R. Vaughan, D.G. Doake, C.S.M.. 1987 Force balance of Rutford Ice Stream, Antarctica. International Association of Hydrological Sciences Publication 170 (Symposium at Vancouver 1987 — The Physical Basis of Ice Sheet Modelling), 323–331.
Gow, A.J. Williamson, T.. 1976 Rheological implications of the internal structure and crystal fabrics of the West Antarctic ice sheet as revealed by deep core drilling at Byrd Station. Geol. Soc Am. Bull., 87(12), 1665–1677.
Hooke, R.LeB. 1981 Flow law for polycrystalline ice in glaciers: comparison of theoretical predictions, laboratory data, and field measurements. Rev. Ceophys. Space Phys., 19(4), 664–672.
Hutter, K. 1983 Theoretical glaciology; material science of ice and the mechanics of glaciers and ice sheets. Dordrecht, etc., D. Reidel Publishing Company.
MacAyeal, D.R. 1987 Ice–shelf backpressure: from drag versus dynamic drag. In Van der Veen C.J. and J. Oerlemans, 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, 141–160.
MacAyeal, D.R. Bindschadler, R.A. Shabtaie, S. Stephenson, S. Bentley, C.R.. 1987 Force, mass, and energy budgets of the Crary Ice Rise complex, Antarctica. J. Glaciol., 33(114), 218–230.
Paterson, W.S.B. Budd, W.F.. 1982 Flow parametes for ice sheet modeling. Cold Reg. Sci. Technol., 6(2), 175–177.
Robin, G.de.Q. 1983 Profile data, inland Antarctica. In Robin, G. de Q., ed. The climatic record in polar ice sheets. Cambridge, etc., Cambridge University Press, 112–118.
Veen, C.J. Whillans, I.M.. 1989 Force budget: I. Theory and numerical methods. J. Glacial., 35(119), 53–60.
Whillans, I.M. 1977 The equation of continuity, and its application to the ice sheet near “Byrd” Station, Antarctica. J. Glaciol., 18(80), 359–371.
Whillans, I.M. 1978 Surface mass–balance variability near “Byrd” Station, Antarctica, and its importance to ice core stratigraphy. J. Glacial., 20(83), 301–310.
Whillans, I.M. 1979 Ice flow along the Byrd Station Strain J. Glacial. 24(90), 15–28.
Whillans, I.M. 1983 Ice movement In Robin, G. de Q., ed. The climatic record in polar ice sheets. Cambridge, etc., Cambridge University Press, 70–77.
Whillans, I.M. Jezek, K.C.. 1987 Folding in the Greenland ice sheet. J. Geophys. Res., 92(B1), 485–493.
Whillans, I.M. Johnsen, S.J.. 1983 Longitudinal variations in glacial flow: theory and test using data from the Byrd Station Strain Network, Antarctica. J. Glaciol., 29(101), 78–97.
  • Cited by 36

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Force Budget: II. Application to Two-Dimensional Flow along Byrd Station Strain Network, Antarctica

  • C.J. Van Der Veen (a1) and I.M. Whillans (a2)

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