Stabilizing feedbacks in glacier-bed erosion

Nature

Volumn 424, Issue 6950, 2003, Pages 758-760

  Alley, R B ^a   Lawson, D E ^b   Larson, G J ^c   Evenson, E B ^d   Baker, G S ^e  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

^b Engineering Research and Development Center   (United States)

^c MICHIGAN STATE UNIVERSITY   (United States)

^d LEHIGH UNIVERSITY   (United States)

^e UNIVERSITY AT BUFFALO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CLIMATOLOGY; EROSION; PERTURBATION TECHNIQUES; SEDIMENTS;

SEDIMENT DEPOSITION;

GLACIERS;

ICE;

AIR-ICE INTERACTION; EROSION RATE; FEEDBACK MECHANISM; GLACIAL EROSION; MODELING;

ARTICLE; EROSION; GEOLOGY; GLACIER; MELTING POINT; PRESSURE; PRIORITY JOURNAL; SEDIMENT; WATER FLOW;

EID: 0041966969     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/nature01839     Document Type: Article

References (30)

1. Hallet, B., Hunter, L. & Bogen, J. Rates of erosion and sediment evacuation by glaciers: a review of field data and their implications. Glob. Planet. Change 12, 213-235 (1996).
2. Mackin, J. H. Concept of the graded river. Geol. Soc. Am. Bull. 59, 463-512 (1948).
3. Easterbrook, D. J. Surface Processes and Landforms 2nd edn (Prentice Hall, Upper Saddle River, NJ, 1999).
4. Montgomery, D. R. Valley formation by fluvial and glacial erosion. Geology 30, 1047-1050 (2002).
5. Alley, R. B., Lawson, D. E., Evenson, E. B. & Larson, G. J. Sediment, glaciohydraulic supercooling, and fast glacier flow. Ann. Glaciol. (in the press).
6. Lawson, D. E. Glaciohydrologic and Glaciohydraulic Effects on Runoff and Sediment Yield in Glacierized Basins (CRREL Monograph 93-2, US Army Cold Regions Research and Engineering Laboratory, Hanover, NH, 1993).
7. Hunter, L. E., Powell, R. D. & Lawson, D. Flux of debris transported by ice at three Alaskan tidewater glaciers. J. Glaciol. 42, 123-135 (1996).
8. Alley, R. B. et al. How glaciers entrain and transport sediment at their beds: Physical constraints. Quat. Sci. Rev 16, 1017-1038 (1997).
9. Iverson, N. R. Potential effects of subglacial water-pressure fluctuations on quarrying. J. Glaciol. 37, 27-36 (1991).
10. Hallet, B. Glacial quarrying: a simple theoretical model. Ann. Glaciol 22, 1-9 (1996).
11. Cuffey, K. M. & Alley, R. B. Erosion by deforming subglacial sediments: Is it significant? (Toward till continuity). Ann. Glaciol 22, 126-133 (1996).
12. Hooke, R. & Le, B. Positive feedbacks associated with erosion of glacial cirques and overdeepenings. Geol. Soc. Am. Bull. 34, 228-231 (1991).
13. Alley, R. B., Strasser, J. C., Lawson, D. E., Evenson, E. B. & Larson, G. J. in Glacial Processes Past and Present (eds Mickelson, D. M. & Attig, J. W.) 1-9 (Geol. Soc. Am. Spec. Pap. 337, Boulder, CO, 1999).
14. Röthlisberger, H. & Lang, H. in GlaciofluviaI Sediment Transfer-An Alpine Perspective (eds Gurnell, A. M. & Clark, M. J.) 207-284 (Wiley, New York, 1987).
15. Hooke, R., Le, B. & Pohjola, V. A. Hydrology of a segment of a glacier situated in an overdeepening, Storglaciaren, Sweden. J. Glaciol. 40, 140-148 (1994).
16. Alley, R. B., Lawson, D. E., Evenson, E. B., Srasser, J. C. & Larson, G. J. Glaciohydraulic supercooling: A freeze-on mechanism to create stratified, debris-rich basal ice. 2. Theory. J. Glaciol. 44, 563-569 (1998).
17. Lliboutry, L. Modifications to the theory of intraglacial waterways for the case of subglacial ones. J. Glaciol. 29, 216-226 (1983).
18. Lawson, D. E. et al. Glaciohydraulic supercooling: A freeze-on mechanism to create stratified, debrisrich basal ice. 1. Field evidence and conceptual model. J. Glaciol 44, 547-562 (1998).
19. Brocklehurst, S. H. & Whipple, K. X. Glacial erosion and relief production in the Eastern Sierra Nevada, California. Geomorphology 42, 1-24 (2002).
20. Roberts, M. J. et al. Glaciohydraulic supercooling in Iceland. Geology 30, 439-442 (2002).
21. Nolan, M., Motyka, R. I., Echelmeyer, K. & Trabant, D. C. Ice-thickness measurements of Taku Glacier, Alaska, USA, and their relevance to its recent behavior. J. Glaciol. 41, 541-553 (1995).
22. Hall, D. K., Benson, C. S. & Field, W. O. Changes of glaciers in Glacier Bay, Alaska, using ground and satellite measurements. Phys. Geogr. 16, 27-41 (1995).
23. Koppes, M. N. & Hallet, B. Influence of rapid glacial retreat on the rate of erosion by tidewater glaciers. Geology 30, 47-50 (2002).
24. Arcone, S. A., Lawson, D. E., Delaney, A. J. & Moran, M. in 8th Int. Conf. Ground-Penetrating Radar (eds Noon, D. A., Stickley, G. F. & Longstaff, D.) 377-382 (SPIE, Bellingham, WA, 2000).
25. Powell, R. D. in Glacimarine Environments, Processes and Sediments (eds Dowdeswell, J. A. & Scourse, J. D.) 53-73 (Geol. Soc. Lond. Spec. Pub. No. 53, London, 1990).
26. Williams, J. R. & Ferrians, O. J. Late Wisconsinan and recent history of the Matanuska Glacier, Alaska. Arctic 14, 82-90 (1961).
27. Lawson, D. E. Sedimentological Analysis of the Western Terminus Region of the Matanuska Glacier, Alaska (CRREL Report 79-9, US Army Cold Regions Research and Engineering Laboratory, Hanover, NH, 1979).
28. Evenson, E. B. et al. in Glacial Processes Past and Present (eds Mickelson, D. M. & Attig, J. W.) 23-25 (Geol. Soc. Am. Spec. Pap. 337, Boulder, CO, 1999).
29. Pearce, J. T. et al. Bedload component of glacially discharged sediment: Insights from the Matanuska Glacier, Alaska. Geology 31, 7-10 (2003).
30. Linker, J. S. et al. Suspended sediment flux as an indicator for rate of glacial erosion at the Matanuska Glacier, south-central Alaska. Geol. Soc Am. Abstr. Prog. 32, A329 (2000).