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Momentum Transfer and Friction in the Debris of Rock Avalanches Open Access
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van Gassen, W.
Cruden, D. M.
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When a mass of loose, dry, purely frictional material slides down an incline after release at a given velocity, the runout (the distance the centre of gravity of the displaced mass moves from its initial position) depends on momentum transfer within the mass. This can be estimated from the profile of the debris accumulation, which also allows more accurate calculation of apparent angles of sliding friction in rockfall avalanches. The apparent extreme mobility of the Elm and Frank slides, typical rockfall avalanches, is explained by momentum transfer in a loose, dry, purely frictional material with an angle of friction of 30°.
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- © 1989 NRC Research Press (Canadian Science Publishing). This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
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Gassen, W. V., & Cruden, D. M. (1989). Momentum transfer and friction in the debris of rock avalanches. Canadian Geotechnical Journal, 26(4), 623-628. doi: 10.1139/t89-075.
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