TY  - JOUR
PY  - 2008//
TI  - The July 2007 rock and ice avalanches at Mount Steele, St. Elias Mountains, Yukon, Canada
JO  - Landslides
A1  - Lipovsky, Panya
A1  - Evans, Stephen
A1  - Clague, John
A1  - Hopkinson, Chris
A1  - Couture, Réjean
A1  - Bobrowsky, Peter
A1  - Ekström, Göran
A1  - Demuth, Michael
A1  - Delaney, Keith
A1  - Roberts, Nicholas
A1  - Clarke, Garry
A1  - Schaeffer, Andrew
SP  - 445
EP  - 455
VL  - 5
IS  - 4
N2  - A large rock and ice avalanche occurred on the north face of Mount Steele, southwest Yukon Territory, Canada, on July 24, 2007. In the days and weeks preceding the landslide, several smaller avalanches initiated from the same slope. The ice and rock debris traveled a maximum horizontal distance 5.76 km with a maximum vertical descent of 2,160 m, leaving a deposit 3.66 km 2 in area on Steele Glacier. The seismic magnitude estimated from long-period surface waves ( M s ) is 5.2. Modeling of the waveforms suggests an estimated duration of approximately 100 s and an average velocity of between 35 and 65 m/s. This landslide is one of 18 large rock avalanches known to have occurred since 1899 on slopes adjacent to glaciers in western Canada. We describe the setting, reconstruct the event chronology and present a preliminary characterization of the Mount Steele ice and rock avalanches based on field reconnaissance, analysis of seismic records and an airborne LiDAR survey. We also present the results of a successful dynamic simulation for the July 24 event.<p /> 
LA  - 
SN  - 1612-510X
UR  - http://dx.doi.org/10.1007/s10346-008-0133-4
ID  - ref1
ER  -