Bubbling and large-scale structures in avalanche dynamics.
Using a simple lattice model for granular media, we present a scenario of self-organization that we term self-organized structuring where the steady state has several unusual features: (1) large-scale spatial and/or temporal inhomogeneities and (2) the occurrence of a nontrivial peaked distribution of large events which propagate like "bubbles" and have a well-defined frequency of occurrence. We discuss the applicability of such a scenario for other models introduced in the framework of self-organized criticality.
Krishnamurthy
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P. M. M. H.-Ecole Superieure de Physique et Chimie Industrielles, 10 rue Vauquelin, 75231 Paris cedex 05, France.
Loreto
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Roux
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