A Model for Scaling Avalanche Speeds

• Published in: Journal of Glaciology
• Main Author: Mcclung, D.M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1990
• Subjects: Journal of Glaciology
• Online Access: http://dx.doi.org/10.1017/s0022143000009436; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000009436

Abstract Snow-avalanche speeds, run-out distances, and the concepts from dense granular flows are combined in a model for prediction of speeds along the incline. Field measurements indicate that speeds and run-out distances are nearly independent of path steepness once a length is chosen to scale them. Application of granular-flow concepts explains these results. The most important feature of the model (and the speed data) is the steep gradient of speeds in the run-out zone. These results emphasize the need for high precision in run-out prediction when construction or defences are contemplated.