Failure initiation in snow stratifications containing weak layers: Nucleation of whumpfs and slab avalanches

Cold Regions Science and Technology

Volumn 52, Issue 3, 2008, Pages 385-400

  Heierli, Joachim ^a   Zaiser, Michael ^a  

^a UNIVERSITY OF EDINBURGH   (United Kingdom)

Author keywords

Brittleness; Cracks; Fracture; Nucleation

Indexed keywords

CRITICAL CRACK LENGTH; SNOW STRATIFICATIONS; WHUMPFS;

BRITTLENESS; CRACK PROPAGATION; FAILURE ANALYSIS; FRACTURE; MATHEMATICAL MODELS; NUCLEATION; SLOPE STABILITY;

AVALANCHES (SNOWSLIDES);

AVALANCHE; CONTINUUM MECHANICS; CRACK; DISPLACEMENT; FAILURE MECHANISM; NUCLEATION; SLOPE ANGLE; SNOW; VOLUME CHANGE;

EID: 41349102984     PISSN: 0165232X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.coldregions.2007.02.007     Document Type: Article

References (22)

1. Bazant Z.P., Zi G., and McClung D. Size effect law and fracture mechanics of the triggering of dry snow slab avalanches. J. Geophys. Res. 108 (2003) 2119 10.1029/2002JB001884
2. Casassa G., Narita H., and Maeno N. Measurement of friction coefficients of snow blocks. Ann. Glaciol. 13 (1989) 40-44
3. Fyffe, B. (2007), PhD thesis, CMSE, Univ of Edinburgh, Scotland, U.K.
4. Fyffe B., and Zaiser M. The effects of snow variability on slab avalanche release. Cold Reg. Sci. Technol. 40 (2004) 229-242
5. Gauthier D., and Jamieson B. Towards a field-test for fracture propagation propensity in weak snowpack layers. J. Glaciol. 52 176 (2006) 164-168
6. Gauthier, D., B. Jamieson (2007), data presented at ISSW 2006.
7. Griffith A.A. The phenomena of rupture and flow in solids. Philos. Trans. R. Soc. Lond., A 221 (1920) 163-198
8. Heierli J. Solitary fracture waves in metastable snow stratifications. J. Geophys. Res. 110 (2005) F02008 10.1029/2004JF000178
9. Heierli J., and Zaiser M. An analytical model for fracture nucleation in collapsible stratifications. Geophys. Res. Lett. 33 (2006) L06501 10.1029/2005GL025311
10. Jamieson J.B., and Schweizer J. Texture and strength changes of buried surface-hoar layers with implications for dry snow-slab avalanche release. J. Glaciol. 46 (2000) 151-160
11. Johnson B.C., Jamieson J.B., and Stewart R.R. Seismic measurements of fracture speed in a weak snowpack layer. Cold Reg. Sci. Technol. 40 (2004) 41-45 10.1016/j.coldregions.2004.05.003
12. Lee S.-S., Koo J.-S., and Choi J.-M. Variational formulation for Timoshenko beam elements by separation of deformation mode. Commun. Numer. Methods Eng. 10 (1994) 599-610
13. McClung D.M. Shear fracture precipitated by strain softening as a mechanism of dry slab avalanche release. J. Geophys. Res. 84 (1979) 3519-3526
14. McClung D.M. Approximate estimates of fracture speeds for dry slab avalanches. Geophys. Res. Lett. 32 (2005) L08406 10.1029/2005GL022391
15. Palmer A.C., and Rice J.R. The growth of slip surfaces in the progressive failure of overconsolidated clay. Proc. R. Soc. A 332 (1973) 527-548
16. Shapiro L.H., Johnson J.B., Sturm M., and Blaisdell G.L. Snow mechanics review of the state of knowledge and applications. CRREL Rep. 97-3 (1997), U.S. Army CRREL, Hanover, New Hampshire, USA 43pp
17. Sigrist C., and Schweizer J. Critical energy release rates of weak snowpack layers determined in field experiments. Geophys. Res. Lett. 34 (2007) L03502 10.1029/2006GL028576
18. Sigrist C., Schweizer J., Schindler H.J., and Dual J. The energy release rate of mode II fractures in layered snow samples. Int. J. Fract. 139 3-4 (2006) 164-168 10.1007/s10704-006-6580-9
19. Timoshenko S.P. On the correction factor for shear of the differential equation for transverse vibrations of prismatic bars. Philos. Mag. 41 (1921) 125
20. van Herwjinen, A. (2005), Fractures in weak snowpack layers in relation to slab avalanche release, PhD thesis, Dept. Civil Eng., Univ of Calgary, Alberta, Canada.
21. van Herwjinen A., and Jamieson B. High-speed photography of fractures in weak snowpack layers. Cold Reg. Sci. Technol. 43 (2005) 71-82 10.1016/j.coldregions.2005.05.005
22. Zaiser M. Slab avalanche release viewed as interface fracture in a random medium. Ann. Glaciol. 38 (2004) 9-14