The stability of grounding lines on retrograde slopes

Cryosphere

Volumn 6, Issue 6, 2012, Pages 1497-1505

  Gudmundsson, G H ^a   Krug, J ^b   Durand, G ^b   Favier, L ^b   Gagliardini, O ^b,c  

^a BRITISH ANTARCTIC SURVEY   (United Kingdom)

^b CNRS   (France)

^c INSTITUT UNIVERSITAIRE DE FRANCE   (France)

Author keywords

[No Author keywords available]

Indexed keywords

GROUNDING LINE; ICE SHEET; INSTABILITY; SEA LEVEL CHANGE; SLOPE STABILITY; STABILIZATION; THRESHOLD;

EID: 84867784497     PISSN: 19940416     EISSN: 19940424     Source Type: Journal    
DOI: 10.5194/tc-6-1497-2012     Document Type: Article

References (26)

1. Bamber, J. L., Riva, R. E. M., Vermeersen, B. L. A., and Le-Brocq, A. M.: Reassessment of the potential sea-level rise from a collapse of the West Antarctic ice sheet, Science, 324, 901-903, doi:10.1126/science.1169335, available at: http://www.sciencemag.org/content/324/5929/901.abstract, 2009.
2. Baral, D. R. and Hutter, C.: Asymptotic theories of ice sheets and ice shelves, in: Geomorphological Fluid Mechanics, edited by: Balmforth, N. J. and Provenzale, A., Lecture Notes in Physics, chap. 11, Springer, 227-278, 2001.
3. Dupont, T. K. and Alley, R. B.: Assessment of the importance of ice-shelf buttressing to ice-sheet flow, Geophys. Res. Lett., 32, L04503, doi:10.1029/2004GL022024, 2005. (Pubitemid 40746859)
4. Durand, G., Gagliardini, O., de Fleurian, D., Zwinger, T., and Meur, E. L.: Marine ice sheet dynamics: hysteresis and neutral equilibrium, J. Geophys. Res., 114, F03009, doi:10.1029/2008JF001170, 2009a.
5. Durand, G., Gagliardini, O., Zwinger, T., Meur, E. L., and Hindmarsh, R.: Full-Stokes modeling of marine ice-sheets: influence of the grid size, Ann. Glaciol., 50, 109-114, 2009b.
6. Favier, L., Gagliardini, O., Durand, G., and Zwinger, T.: A threedimensional full Stokes model of the grounding line dynamics: effect of a pinning point beneath the ice shelf, The Cryosphere, 6, 101-112, doi:10.5194/tc-6-101-2012, 2012.
7. Gagliardini, O., Durand, G., Zwinger, T., Hindmarsh, R. C. A., and Meur, E. L.: Coupling of ice-shelf melting and buttressing is a key process in ice-sheets dynamics, Geophys. Res. Lett., 37, L14501, doi:10.1029/2010GL043334, 2010.
8. Gladstone, R. M., Payne, A. J., and Cornford, S, L.: Resolution requirements for grounding-line modelling: sensitivity to basal drage and ice-shelf buttressing. Ann. Glaciol., 53, 97-105, doi:10.3189/2012AoG60A148, 2012.
9. Goldberg, D., Holland, D. M., and Schoof, C.: Grounding line movement and ice shelf buttressing in marine ice sheets, J. Geophys. Res., 114, F04026, doi:10.1029/2008JF001227, 2009.
10. Gudmundsson, G. H.: Analytical solutions for the surface response to small amplitude perturbations in boundary data in the shallow-ice-stream approximation, The Cryosphere, 2, 77-93, doi:10.5194/tc-2-77-2008, 2008.
11. Hindmarsh, R. C. A.: Qualitative dynamics of marine ice sheets, in: Ice in the Climate System, edited by: Peltier, W. R., no. 12 in NATO ASI Series I, Springer, 66-99, 1993.
12. Hindmarsh, R. C. A.: Stability of ice rises and uncoupled marine ice sheets, Ann. Glaciol., 23, 94-104, 1996.
13. Hutter, K.: Theoretical Glaciology; Material Science of Ice and the Mechanics of Glaciers and Ice Sheets, D. Reidel Publishing Company/Tokyo, Terra Scientific Publishing Company, 1983.
14. Jamieson, S. S. R., Vieli, A., Livingstone,S. J., Cofaigh, C. O, Stokes, S., Hillenbrand, C.-D., and Dowdeswell, J. D.: Ice-stream stability on a reverse bed slope, Nat. Geosci., 5, 799-802, 2012.
15. Katz, R. F. and Worster, M. G.: Stability of ice-sheet grounding lines, P. Roy. Soc. A. Math., Phys., 466, 1597-1620, doi:10.1098/rspa.2009.0434, 2010.
16. MacAyeal, D. R.: Large-scale ice flow over a viscous basal sediment: theory and application to ice stream B, Antarctica, J. Geophys. Res., 94, 4071-4078, 1989.
17. Morland, L. W.: Thermomechanical balances of ice-sheet flows, Geophys. Astro. Fluid, 29, 237-266, 1984.
18. Muszynski, I. and Birchfield, G. E.: A coupled marine ice-streamice - shelf model, J. Glaciol., 33, 3-14, 1987.
19. Pattyn, F., Schoof, C., Perichon, L., Hindmarsh, R. C. A., Bueler, E., de Fleurian, B., Durand, G., Gagliardini, O., Gladstone, R., Goldberg, D., Gudmundsson, G. H., Huybrechts, P., Lee, V., Nick, F. M., Payne, A. J., Pollard, D., Rybak, O., Saito, F., and Vieli, A.: Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP, The Cryosphere, 6, 573-588, doi:10.5194/tc- 6-573-2012, 2012.
20. Ross, N., Bingham, R. G., Corr, H. F. J., Ferraccioli, F., Jordan, T. A., Brocq, A. L., Rippin, D. M., Young, D., Blankenship, D. D., and Siegert, M. J.: Steep reverse bed slope at the grounding line of theWeddell Sea sector in West Antarctica, Nat. Geosci., 5, 393-396, doi:10.1038/ngeo1468, 2012.
21. Schoof, C.: Ice sheet grounding line dynamics: steady states, stability, and hysteresis, J. Geophys. Res., 112, F03S28, doi:10.1029/2006JF000664, 2007a. (Pubitemid 350120788)
22. Schoof, C.: Marine ice-sheet dynamics, part 1, The case of rapid sliding, J. Fluid. Mech., 573, 27-55, doi:10.1017/S0022112006003570, 2007b. (Pubitemid 46322126)
23. Thomas, R. H. and Bentley, C. R.: A model for Holocene retreat of the West Antarctic ice sheet, Quaternary Res., 10, 150-170, doi:10.1016/0033- 5894(78)90098-4, available at: http://www.sciencedirect.com/science/article/pii/ 0033589478900984, 1978.
24. Vieli, A. and Payne, A. J.: Assessing the ability of numerical ice sheet models to simulate grounding line migration, J. Geophys. Res., 110, F01003, doi:10.1029/2004JF000202, 2005. (Pubitemid 44618948)
25. Walker, R. T., Dupont, T. K., Parizek, B. R., and Alley, R. B.: Effects of basal-melting distribution on the retreat of ice-shelf grounding lines, Geophys. Res. Lett., 35, L17503, doi:10.1029/2008GL034947, 2008.
26. Weertman, J.: Stability of the junction of an ice sheet and ice shelf, J. Glaciol., 13, 3-11, 1974.