Variable deceleration of Whillans Ice Stream, West Antarctica

Journal of Geophysical Research: Earth Surface

Volumn 119, Issue 2, 2014, Pages 212-224

  Beem, L H ^a   Tulaczyk, S M ^a   King, M A ^b,c   Bougamont, M ^d   Fricker, H A ^e   Christoffersen, P ^d  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b UNIVERSITY OF TASMANIA   (Australia)

^c NEWCASTLE UNIVERSITY   (United Kingdom)

^d UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^e UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

basal freeze on; basal resistance; GPS; Whillans Ice Stream

Indexed keywords

FLOW VELOCITY; GLACIAL HYDROLOGY; GPS; ICE MOVEMENT; ICE SHEET; ICE STREAM; SUBGLACIAL ENVIRONMENT;

ANTARCTIC ICE SHEET; ANTARCTICA; WEST ANTARCTIC ICE SHEET; WEST ANTARCTICA; WHILLANS ICE STREAM;

EID: 84896500105     PISSN: None     EISSN: 21699011     Source Type: Journal    
DOI: 10.1002/2013JF002958     Document Type: Article

References (36)

1. Alley, R. B., (1993), In search of ice stream sticky spots, J. Glaciol., 39 (133), 447-454.
2. Anandakrishnan, S., and, R. B. Alley, (1997), Stagnation of ice stream C, West Antarctica by water piracy, Geophys. Res. Lett., 24 (3), 265-268.
3. Bindschadler, R. A., S. N. Stephenson, D. R. MacAyeal, and, S. Shabtaie, (1987), Ice dynamics at the mouth of Ice Stream B, Antarctica, J. Geophys. Res., 92 (B9), 8885-8894.
4. Bindschadler, R. A., and, P. L. Vornberger, (1998), Changes in the West Antarctic ice sheet since 1963 from declassified satellite photography, Science, 279 (5351), 689-692, doi: 10.1126/science.279.5351.689.
5. Bindschadler, R. A., P. L. Vornberger, M. A. King, and, L. Padman, (2003), Tidally driven stick-slip motion in the mouth of Whillans Ice Stream, Antarctica, Ann. Glaciol., 36 (1), 263-272, doi: 10.3189/172756403781816284.
6. Brunt, K. M., H. A. Fricker, L. Padman, T. A. Scambos, and, S. O'Neel, (2010), Mapping the grounding zone of the Ross Ice Shelf, Antarctica, using ICESat laser altimetry, Ann. Glaciol., 51 (55), 55-71, doi: 10.3189/ 172756410791392790.
7. Carter, S. P., H. A. Fricker, A. Helen, and, M. R. Siegfried, (2013), Evidence of rapid subglacial water piracy under Whillans Ice stream, J. Glaciol., 59 (218), 1147-1162, doi: 10.3189/2013JoG13J085.
8. Christianson, K., R. W. Jacobel, H. J. Horgan, S. Anandakrishnan, and, R. B. Alley, (2012), Subglacial Lake Whillans-Ice-penetrating radar and GPS observations of a shallow active reservoir beneath a West Antarctic ice stream, Earth Planet. Sci. Lett., 331, 237-245, doi: 10.1016/j.epsl.2012.03.013.
9. Christoffersen, P., and, S. M. Tulaczyk, (2003), Response of subglacial sediments to basal freeze-on 1. Theory and comparison to observations from beneath the West Antarctic Ice Sheet, J. Geophys. Res., 108 (B4), 2222, doi: 10.1029/2002JB001935.
10. Engelhardt, H. F., (2004a), Ice temperature and high geothermal flux at Siple Dome, West Antarctica, from borehole measurements, J. Glaciol., 50 (169), 251-256, doi: 10.3189/172756504781830105.
11. Engelhardt, H. F., (2004b), Thermal regime and dynamics of the West Antarctic ice sheet, Ann. Glaciol., 39 (1), 85-92, doi: 10.3189/ 172756404781814203.
12. Engelhardt, H. F., N. F. Humphrey, W. B. Kamb, and, M. A. Fahnestock, (1990), Physical conditions at the base of a fast moving Antarctic ice stream, Science, 248 (4951), 57-59, doi: 10.1126/science.248.4951.57.
13. Fretwell, P., et al. (2013), Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7 (1), 375-393, doi: 10.5194/tc-7-375-2013.
14. Fricker, H. A., and, T. A. Scambos, (2009), Connected subglacial lake activity on lower Mercer and Whillans Ice Streams, West Antarctica, 2003-2008, J. Glaciol., 55 (190), 303-315, doi: 10.3189/002214309788608813.
15. Jezek, K. C., (1999), Glaciological properties of the Antarctic Ice Sheet from RADARSAT-1 synthetic aperture radar imagery, Ann. Glaciol., 29 (1), 286-290, doi: 10.3189/172756499781820969.
16. Joughin, I. R., L. Gray, R. A. Bindschadler, S. F. Price, D. L. Morse, C. L. Hulbe, K. Mattar, and, C. Werner, (1999), Tributaries of West Antarctic ice streams revealed by RADARSAT interferometry, Science, 286 (5438), 283-286, doi: 10.1126/science.286.5438.283.
17. Joughin, I. R., S. M. Tulaczyk, R. A. Bindschadler, and, S. F. Price, (2002), Changes in West Antarctic ice stream velocities: Observation and analysis, J. Geophys. Res., 102 (B11), 2289, doi: 10.1029/2001JB001029.
18. Joughin, I. R., S. M. Tulaczyk, D. R. MacAyeal, and, H. F. Engelhardt, (2004), Melting and freezing beneath the Ross ice streams, Antarctica, J. Glaciol., 50 (168), 96-108, doi: 10.3189/172756504781830295.
19. Joughin, I. R., et al. (2005), Continued deceleration of Whillans Ice Stream, West Antarctica, Geophys. Res. Lett., 32, L22501, doi: 10.1029/2005GL024319.
20. King, M. A., and, S. Aoki, (2003), Tidal observations on floating ice using a single GPS receiver, Geophys. Res. Lett., 30 (3), 1138, doi: 10.1029/2002GL016182.
21. Price, S. F., A. J. Payne, I. M. Howat, and, B. E. Smith, (2011), Committed sea-level rise for the next century from Greenland ice sheet dynamics during the past decade, Proc. Natl. Acad. Sci., 108 (22), 8978-8983, doi: 10.1073/pnas.1017313108.
22. Pritchard, H. D., R. J. Arthern, D. G. Vaughan, and, L. A. Edwards, (2009), Extensive dynamic thinning on the margins of the Greenland and Antarctic ice sheets, Nature, 461 (7266), 971-975, doi: 10.1038/nature08471.
23. Rempel, A. W., (2008), A theory for ice-till interactions and sediment entrainment beneath glaciers, J. Geophys. Res., 113, F01013, doi: 10.1029/2007JF000870.
24. Rignot, E. J., J. L. Bamber, M. van den Broeke, C. Davis, Y. Li, W. J. Van de Berg, and, E. van Meijgaard, (2008), Recent Antarctic ice mass loss from radar interferometry and regional climate modelling, Nat. Geosci., 1 (2), 106-110, doi: 10.1038/ngeo102.
25. Rignot, E., J. Mouginot, and, B. Scheuchl, (2011), Ice flow of the Antarctic ice sheet, Science, 333 (6048), 1427-1430, doi: 10.1126/science. 1208336.
26. Stearns, L. A., K. C. Jezek, and, C. J. Van der Veen, (2005), Decadal-scale variations in ice flow along Whillans Ice Stream and its tributaries, West Antarctica, J. Glaciol., 51 (172), 147-157, doi: 10.3189/172756505781829610.
27. Stephenson, S. N., and, R. A. Bindschadler, (1988), Observed velocity fluctuations on a major Antarctic ice stream, Nature, 334 (6184), 695-697, doi: 10.1038/334695a0.
28. Thomas, R. H., (1973), The creep of ice shelves: Theory, J. Glaciol., 12 (64), 45-53.
29. Thomas, R. H., C. R. Bentley, D. H. Eilers, and, D. R. Gaylord, (1984), Glaciological studies on the Ross Ice Shelf, Antarctica, 1973-1978, in The Ross Ice Shelf: Glaciology and Geophysics, Antarct. Res. Ser., vol. 42, edited by, C. R. Bentley, and, D. E. Hayes, pp. 21-53, AGU, Washington, D. C.
30. Tulaczyk, S. M., W. B. Kamb, and, H. F. Engelhardt, (2000a), Basal mechanics of Ice Stream B, West Antarctica 1. Till mechanics, J. Geophys. Res., 105 (B1), 463-481.
31. Tulaczyk, S. M., W. B. Kamb, and, H. F. Engelhardt, (2000b), Basal mechanics of Ice Stream B, West Antarctica 2. Undrained plastic bed model, J. Geophys. Res., 105 (B1), 483-494.
32. Van der Veen, C. J., (1999), Fundamentals of Glacier Dynamics, Balkema, Rotterdam.
33. Van der Veen, C. J., and, I. M. Whillans, (1989), Force budget: I: Theory and numerical methods, J. Glaciol., 35 (119), 53-80.
34. Van der Veen, C. J., K. C. Jezek, and, L. A. Stearns, (2007), Shear measurements across the northern margin of Whillans Ice Stream, J. Glaciol., 53 (180), 17-29.
35. Walter, J. I., E. E. Brodsky, S. M. Tulaczyk, S. Y. Schwartz, and, R. Pettersson, (2011), Transient slip events from near-field seismic and geodetic data on a glacier fault, Whillans Ice Plain, West Antarctica, J. Geophys. Res., 116, F01021, doi: 10.1029/2010JF001754.
36. Whillans, I. M., J. F. Bolzan, and, S. Shabtaie, (1987), Velocity of ice streams B and C, Antarctica, J. Geophys. Res., 92, 8895-8902.