Surface ice motion deviating toward the margins during speed-up events at Gornergletscher, Switzerland

Journal of Geophysical Research: Earth Surface

Volumn 115, Issue 3, 2010, Pages

  Sugiyama, S ^a,b   Bauder, A ^b   Riesen, P ^b   Funk, M ^b  

^a HOKKAIDO UNIVERSITY   (Japan)

^b ETH ZURICH   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

GROUND MOTION; ICE FLOW; ICE MOVEMENT; ICE-DAMMED LAKE; OUTBURST; OVERBURDEN; SUBGLACIAL DEPOSIT; AZIMUTH; FLOW MODELING; GLACIOLOGY; GPS; ICE MARGIN; MELTING; TWO-DIMENSIONAL MODELING;

GORNER GLACIER; SWITZERLAND; VALAIS;

EID: 77955195296     PISSN: None     EISSN: 21699011     Source Type: Journal    
DOI: 10.1029/2009JF001509     Document Type: Article

References (42)

1. Amundson, J. M., M. Truffer, and M. P. Lüthi (2006), Time-dependent basal stress conditions beneath Black Rapids Glacier, Alaska, inferred from measurements of ice deformation and surface motion, J. Glaciol., 52(178), 347-357.
2. Anderson, R. S., S. P. Anderson, K. R. MacGregor, E. D. Waddington, S. O'Neel, C. A. Riihimaki, and M. G. Loso (2004), Strong feedbacks between hydrology and sliding of a small alpine glacier, J. Geophys. Res., 109, F03005, doi:10.1029/2004JF000120.
3. Balise, M. J., and C. F. Raymond (1985), Transfer of basal sliding variations to the surface of a linearly viscous glacier, J. Glaciol., 31(109), 308-318.
4. Bartholomaus, T. C., R. S. Anderson, and S. P. Anderson (2008), Response of glacier basal motion to transient water storage, Nat. Geosci., 1, 33-37.
5. Bauder, A., M. Funk, and M. Huss (2007), Ice volume changes of selected glaciers in the Swiss Alps since the end of the 19th century, Ann. Glaciol., 46, 145-149.
6. Bindschadler, R. (1983), The importance of pressurized subglacial water in separation and sliding at the glacier bed, J. Glaciol., 29(101), 3-19.
7. Eisen, O., A. Bauder, M. Lüthi, P. Riesen, and M. Funk (2009), Deducing the thermal structure in the tongue of Gornergletscher, Switzerland, from radar surveys and borehole measurements, Ann. Glaciol., 50, 63-70.
8. Glen, J. W. (1955), The creep of polycrystalline ice, Proc. R. Soc. London, Ser. A, 228(1175), 519-538.
9. Gudmundsson, G. H. (1999), A three-dimensional numerical model of the confluence area of Unteraargletscher, Bernese Alps, Switzerland, J. Glaciol., 45(150), 219-230.
10. Gudmundsson, G. H. (2002), Observations of a reversal in vertical and horizontal strain-rate regime during a motion event on Unteraargletscher, Bernese Alps, Switzerland, J. Glaciol., 48(163), 566-574.
11. Gudmundsson, G. H., A. Bassi, M. Vonmoos, A. Bauder, U. H. Fischer, and M. Funk (2000), High-resolution measurements of spatial and temporal variations in surface velocities of Unteraargletscher, Bernese Alps, Switzerland, Ann. Glaciol., 31, 63-68.
12. Hooke, R. L., P. Calla, P. Holmlund, M. Nilsson, and A. Stroeven (1989), A 3 year record of seasonal variations in surface velocity, Storglaciären, Sweden, J. Glaciol., 35(120), 235-247.
13. Hubbard, A., H. Blatter, P. Nienow, D. Mair, and B. Hubbard (1998), Comparison of a three-dimensional model for glacier flow with field data from Haut Glacier d'Arolla, Switzerland, J. Glaciol., 44(147), 368-378.
14. Huss, M., A. Bauder, M. Werder, M. Funk, and R. Hock (2007), Glacierdammed lake outburst events of Gornersee, Switzerland, J. Glaciol., 53(181), 189-200.
15. Iken, A., and R. A. Bindschadler (1986), Combined measurements of subglacial water pressure and surface velocity of Findelengletscher, Switzerland: Conclusions about drainage system and sliding mechanism, J. Glaciol., 32(110), 101-119.
16. Iken, A., H. Röthlisberger, A. Flotron, and W. Haeberli (1983), The uplift of Unteraargletscher at the beginning of the melt season-A consequence of water storage at the bed?, J. Glaciol., 29(101), 28-47.
17. Jansson, P. (1995), Water pressure and basal sliding on Storglaciären, northern Sweden, J. Glaciol., 41(138), 232-240.
18. Kamb, B., and H. Engelhardt (1987), Waves of accelerated motion in a glacier approaching surge: The mini-surges of Variegated Glacier, Alaska, U.S.A., J. Glaciol., 33(113), 27-46.
19. Magnússon, E., H. Rott, H. Björnsson, and F. Pálsson (2007), The impact of jökulhlaups on basal sliding observed by SAR interferometry on Vatnajökull, Iceland, J. Glaciol., 53(181), 232-240.
20. Mair, D., P. Nienow, I. Willis, and M. Sharp (2001), Spatial patterns of glacier dynamics during a high-velocity event: Haut Glacier d'Arolla, Switzerland, J. Glaciol., 47(156), 9-20.
21. Mair, D., M. Sharp, and I. Willis (2002), Evidence for basal cavity opening from analysis of surface uplift during a high-velocity event: Haut Glacier d'Arolla, Switzerland, J. Glaciol., 48(161), 208-216.
22. Mogi, K. (1958), Relations between the eruptions of various volcanoes and the deformations of the ground surfaces around them, Bull. Earthquake Res. Inst. Univ. Tokyo, 36, 99-134.
23. Naruse, R., H. Fukami, and M. Aniya (1992), Short-term variations in flow velocity of Glacier Soler, Patagonia, Chile, J. Glaciol., 38(128), 152-156.
24. Nienow, P. W., M. J. Sharp, and I. C. Willis (1998), Seasonal changes in the morphology of the subglacial drainage system, Haut Glacier d'Arolla, Switzerland, Earth Surf. Processes Landforms, 23, 825-843.
25. Nienow, P. W., A. L. Hubbard, B. P. Hubbard, D. M. Chandler, D. W. F. Mair, M. J. Sharp, and I. C. Willis (2005), Hydrological controls on diurnal ice flow variability in valley glaciers, J. Geophys. Res., 110, F04002, doi:10.1029/2003JF000112.
26. Pattyn, F., et al. (2008), Benchmark experiments for higher-order and full? Stokes ice sheet models (ISMIP-HOM), Cryosphere, 2, 95-108.
27. Raymond, C. F., and S. Malone (1986), Propagating strain anomalies during mini-surges of Variegated Glacier, Alaska, U.S.A., J. Glaciol., 32(111), 178-191.
28. Riesen, P., T. Strozzi, A. Bauder, A. Wiesmann, and M. Funk (2009), Anomalous surface ice motion during the 2008 drainage of Gornersee, Switzerland, Geophys. Res. Abstr., 11, EGU2009-11362-1.
29. Röthlisberger, H., and A. Iken (1981), Plucking as an effect of waterpressure variations at the glacier bed, Ann. Glaciol., 2, 57-61.
30. Ryser, C. (2008), The polythermal structure of Grenzgletscher, Valais, Switzerland, Master's thesis, Lab. of Hydraul. Hydrol. and Glaciol., ETH Zurich, Zurich, Switzerland.
31. Sugiyama, S., and G. H. Gudmundsson (2003), Diurnal variations in vertical strain observed in a temperate valley glacier, Geophys. Res. Lett., 30(2), 1090, doi:10.1029/2002GL016160.
32. Sugiyama, S., and G. H. Gudmundsson (2004), Short-term variations in glacier flow controlled by subglacial water pressure at Lauteraargletscher, Bernese Alps, Switzerland, J. Glaciol., 50(170), 353-362.
33. Sugiyama, S., G. H. Gudmundsson, and J. Helbing (2003), Numerical investigation of the effects of temporal variations in basal lubrication on englacial strain-rate distribution, Ann. Glaciol., 37, 49-54.
34. Sugiyama, S., A. Bauder, P. Weiss, and M. Funk (2007), Reversal of ice motion during the outburst of a glacier-dammed lake on Gornergletscher, Switzerland, J. Glaciol., 53(181), 172-180.
35. Sugiyama, S., A. Bauder, M. Huss, P. Riesen, and M. Funk (2008), Triggering and drainage mechanisms of the 2004 glacier-dammed lake outburst in Gornergletscher, Switzerland, J. Geophys. Res., 113, F04019, doi:10.1029/2007JF000920.
36. Truffer, M., K. Echelmeyer, and W. D. Harrison (2001), Implications of till deformation on glacier dynamics, J. Glaciol., 47(156), 123-134.
37. Vieli, A., J. Jania, H. Blatter, and M. Funk (2004), Short-term velocity variations on Hansbreen, a tidewater glacier in Spitsbergen, J. Glaciol., 50(170), 389-398.
38. Walsh, J. B., and R. W. Decker (1971), Surface deformation associated with volcanism, J. Geophys. Res., 76(14), 3291-3302.
39. Walter, F., N. Deichmann, and M. Funk (2008), Basal icequakes during changing subglacial water pressures beneath Gornergletscher, Switzerland, J. Glaciol., 54(186), 511-521.
40. Werder, M., and M. Funk (2009), Dye tracing a jökulhlaup: II. Testing a jökulhlaup model against flow speeds inferred from measurements, J. Glaciol., 55(193), 899-908.
41. Werder, M., A. Loye, and M. Funk (2009), Dye tracing a jökulhlaup: I. Subglacial water transit speed and water-storage mechanism, J. Glaciol., 55(193), 889-898.
42. Zwally, H. J., W. Abdalati, T. Herring, K. Larson, J. Saba, and K. Steffen (2002), Surface melt-induced acceleration of Greenland ice-sheet flow, Science, 297(5579), 218-222.