Item: Observations of an Increase in Slab Thickness After Fracture
Title: Observations of an Increase in Slab Thickness After Fracture
Proceedings: Proceedings of the 2004 International Snow Science Workshop, Jackson Hole, Wyoming
- Robbie Fuller [ Smoky Hollow Enterprises, Wilson, WY ]
Abstract: In the fracturing of snow peripheral to avalanches and in events where slabs have fractured but did not slide, the failed, or downslope, part of the slab often is taller than the uphill, or unreleased, part. This is especially evident in deep or hard slabs. Even with an obvious collapse within a weak layer, when the two sides are compared separately from this layer, the released part is higher. If this phenomenon is viewed as an arrested motion avalanche, then this is a window into the sequence of slab failure. What is causing this difference? Is this evidence of elastic rebound? If so, then this would appear to be the result of some latent elastic strain. This paper poses an hypothesis and a model of this process.
Language of Article: English
Keywords: strain, elastic, rebound
Digital Abstract Not Available