Inland thinning of West Antarctic Ice Sheet steered along subglacial rifts

Nature

Volumn 487, Issue 7408, 2012, Pages 468-471

  Bingham, Robert G ^a   Ferraccioli, Fausto ^b   King, Edward C ^b   Larter, Robert D ^b   Pritchard, Hamish D ^b   Smith, Andrew M ^b   Vaughan, David G ^b  

^a UNIVERSITY OF ABERDEEN   (United Kingdom)

^b BRITISH ANTARCTIC SURVEY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

COAST; GLACIAL EROSION; ICE MARGIN; ICE SHEET; PERTURBATION; RIFT ZONE; SEA LEVEL; SUBGLACIAL ENVIRONMENT; TOPOGRAPHY;

ANTARCTICA; ARTICLE; BELLINGSHAUSEN SEA; ENVIRONMENTAL EROSION; GLACIER; GRAVITY; MAGNETISM; PRIORITY JOURNAL; SEA LEVEL; SUBGLACIAL RIFT; TOPOGRAPHY;

AMUNDSEN SEA; ANTARCTICA; BELLINGSHAUSEN SEA; SOUTHERN OCEAN; WEST ANTARCTIC ICE SHEET; WEST ANTARCTICA;

BELGICA;

EID: 84864189023     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature11292     Document Type: Article

References (30)

1. Meier, M. F. et al. Glaciers dominate eustatic sea-level rise in the 21st century. Science 317, 1064-1067 (2007).
2. Pritchard, H. D., Arthern, R. J., Vaughan, D. G. & Edwards, L. A. Extensive dynamic thinning on the margins of the Greenland and Antarctic ice sheets. Nature 461, 971-975 (2009).
3. Wingham, D. J., Wallis, D. W.& Shepherd, A. Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006. Geophys. Res. Lett. 36, L17501 (2009).
4. Rignot, E., Velicogna, I., van den Broeke, M. R., Monaghan, A. & Lenaerts, J. Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise. Geophys. Res. Lett. 38, L05503 (2011).
5. Jacobs, S. S., Jenkins, A., Giulivi, C. F. & Dutrieux, P. Stronger ocean circulation and increased melting under Pine Island Glacier ice shelf. Nature Geosci. 4, 519-523 (2011).
6. Ó Cofaigh, C. et al. Flowof theWest Antarctic Ice Sheet on the continentalmargin of the Bellingshausen Sea at the Last Glacial Maximum. J. Geophys. Res. 110, B11103 (2005).
7. Holland, P. R., Jenkins, A. & Holland, D. M. Ice and ocean processes in the Bellingshausen Sea, Antarctica. J. Geophys. Res. 115, C05020 (2010).
8. Chen, J. L., Wilson, C. R., Blankenship, D. & Tapley, B. D. Accelerated Antarctic ice loss from satellite gravity measurements. Nature Geosci. 2, 859-862 (2009).
9. Schoof, C. Ice sheet grounding line dynamics: steady states, stability, and hysteresis. J. Geophys. Res. 112, F03S28 (2007).
10. Blankenship, D. D. et al. in The West Antarctic Ice Sheet: Behaviour and Environment (eds Alley, R. B. & Bindschadler, R. A.) Antarct. Res. Ser., 77, 105-121 (AGU, 2001).
11. Winberry, J. P. & Anandakrishnan, S. Crustal structure of the West Antarctic Rift System and Marie Byrd Land hotpsot. Geology 32, 977-980 (2004).
12. Dalziel, I. W. D. On the extent of the active West Antarctic Rift System. Terra Antarctica Rep. 12, 193-202 (2006).
13. Anandakrishnan, S., Blankenship, D. D., Alley, R. B. & Stoffa, P. L. Influence of subglacial geology on the position of a West Antarctic ice stream from seismic observations. Nature 394, 62-65 (1998).
14. Studinger, M. et al. Subglacial sediments: a regional geological template for ice flow in West Antarctica. Geophys. Res. Lett. 28, 3493-3496 (2001).
15. Maule, C. F., Purucker, M. E., Olsen, N. & Mosegard, K. Heat flux anomalies in Antarctica revealed by satellite magnetic data. Science 309, 464-467 (2005).
16. Müller, R. D., Gohl, K., Cande, S. C., Goncharov, A. & Golynsky, A. V. Eocene to Miocene geometry of the West Antarctic Rift System. Aust. J. Earth Sci. 54, 1033-1045 (2007).
17. LeMasurier, W. E. Neogene extension and basin overdeepening in the West Antarctic rift inferred from comparisons with the East African rift and other analogs. Geology 36, 247-250 (2008).
18. Harbor, J. M. Numerical modeling of the development of U-shaped valleys by glacial erosion. Geol. Soc. Am. Bull. 104, 1364-1375 (1992).
19. Olsen, K. H. & Morgan, P. in Continental Rifts: Evolution, Structure, Tectonics (ed. Olsen, K. H.) 3-26 (Elsevier, 2006).
20. Maslanyj, M. P.&Storey, B. C. Regional aeromagnetic anomalies in Ellsworth Land: crustal structure and Mesozoic microplate boundaries within West Antarctica. Tectonics 9, 1515-1532 (1990).
21. Siddoway, C. S. in Antarctica: a Keystone in a Changing World (eds Cooper, A. K. et al.), Proc. 10th Int. Symp. Ant. Sci. 91-114 (The National Academies Press, 2008).
22. Gohl, K. Basement control on past ice sheet dynamics in the Amundsen Sea Embayment, West Antarctica. Palaeogeogr. Palaeoclim. Palaeoecol. 335/6, 35-41 (2012).
23. Jordan, T. A. et al. Aerogravity evidence for major crustal thinning under the Pine Island Glacier region (West Antarctica). Geol. Soc. Am. Bull. 122, 714-726 (2010).
24. Granot, R., Cande, S. C., Stock, J. M., Davey, F. J. & Clayton, R. W. Postspreading rifting in the Adare Basin, Antarctica: regional tectonic consequences. Geochem. Geophys. Geosyst. 11, Q08005 (2010).
25. Schröder, H., Paulsen, T.&Wonik, T. Thermal properties of theAND-2A borehole in the southern Victoria Land Basin, McMurdo Sound, Antarctica. Geosphere 7, 1324-1330 (2011).
26. Taylor, J. et al. Topographic controls on post-Oligocene changes in ice-sheet dynamics, Prydz Bay region, East Antarctica. Geology 32, 197-200 (2004).
27. De Angelis, H. & Kleman, J. Palaeo-ice streams in the Foxe/Baffin sector of the Laurentide Ice Sheet. Quat. Sci. Rev. 26, 1313-1331 (2007).
28. Rignot, E. et al. Recent Antarctic ice mass loss from radar interferometry and regional climate modelling. Nature Geosci. 1, 106-110 (2008).
29. Vaughan, D. G. et al. New boundary conditions for the West Antarctic ice sheet: subglacial topography beneath Pine Island Glacier. Geophys. Res. Lett. 33, L09501 (2006).
30. Graham, A. G. C., Nitsche, F. O.& Larter, R. D. An improved bathymetry compilation for the Bellingshausen Sea, Antarctica, to inform ice-sheet and ocean models. Cryosphere 5, 95-106 (2011).