Avalanche Statistics of Driven Granular Slides in a Miniature Mound

Details Avalanche Statistics of Driven Granular Slides in a Miniature Mound Avalanche Statistics of Driven Granular Slides in a Miniature Mound

2008-05-12

arxiv.org/abs/0805.1582v2

Geophys. Res. Lett., 35, L19403 (2008)

Nonlinear Sciences

Adaptation and Self-Organizing Systems

4 pages, 3 figures, 1 table

Scientific paper

10.1029/2008GL035567

We examine avalanche statistics of rain- and vibration-driven granular slides in miniature sand mounds. A crossover from power-law to non power-law avalanche-size statistics is demonstrated as a generic driving rate $\nu$ is increased. For slowly-driven mounds, the tail of the avalanche-size distribution is a power-law with exponent $-1.97\pm 0.31$, reasonably close to the value previously reported for landslide volumes. The interevent occurrence times are also analyzed for slowly-driven mounds; its distribution exhibits a power-law with exponent $-2.670\pm 0.001$.

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