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Triangular and uphill avalanches of a tilted sandpile

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Abstract

Recent experiments show that an avalanche initiated from a point source propagates downwards by invading a triangular shaped region. The opening angle of this triangle appears to reach 180° for a critical inclination of the pile, beyond which avalanches also propagate upwards. We propose a simple interpretation of these observations, based on an extension of a phenomenological model for surface flows.

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Authors and Affiliations

  1. Service de Physique de lEtat Condensé, CEA, Ormes des Merisiers, 91191 Gif-sur-Yvette, Cedex France e-mail: bouchau@amoco.saclay.cea.fr, , , , , , FR

    J.P. Bouchaud

  2. University of Edinburgh, JCMB Kings Buildings, Mayfield Road, Edinburgh EH9 3JZ, UK, , , , , , GB

    M. E. Cates

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  1. J.P. Bouchaud
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  2. M. E. Cates
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Received: 2 February 1998

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Bouchaud, J., Cates, M. Triangular and uphill avalanches of a tilted sandpile. GM 1, 101–103 (1998). https://doi.org/10.1007/s100350050015

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  • DOI: https://doi.org/10.1007/s100350050015

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