Phys. Rev. Lett. 89, 074301 (2002) [4 pages]Development of Grain AvalanchesReceived 15 November 2001; published 30 July 2002 We present a new theoretical approach aimed to describe the dynamical properties of avalanches. Starting from simple microscopic considerations, we propose an analytical derivation accounting for the avalanche growth as a function of time. The solution resembles very closely recent experimental observations. We show in particular that the two observed regimes of growth proceed from a singularity in the rear front velocity as a function of the slope. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.074301
DOI:
10.1103/PhysRevLett.89.074301
PACS:
45.70.Ht, 45.05.+x, 47.50.+d, 83.80.Fg
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