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142 Debris Flow

Part 12. Open-Channel Flow

  1. Aronne Armanini,
  2. Luigi Fraccarollo,
  3. Michele Larcher

Published Online: 15 APR 2006

DOI: 10.1002/0470848944.hsa149

Encyclopedia of Hydrological Sciences

Encyclopedia of Hydrological Sciences

How to Cite

Armanini, A., Fraccarollo, L. and Larcher, M. 2006. Debris Flow. Encyclopedia of Hydrological Sciences. 12:142.

Author Information

  1. University of Trento, CUDAM and Department of Civil and Environmental Engineering, Trento, Italy

Publication History

  1. Published Online: 15 APR 2006


The principal features of debris flow are described. One section is devoted to debris-flow triggering, accounting for the geomechanical criteria by Takahashi (1978) and for most recent hydrological distributed models. In a second section, the rheology of debris flows is described: the theory of dispersive stresses by Bagnold, the kinetic theories of dense gases, and some recent experimental observations about debris flows in equilibrium. A section is devoted to mathematical models and the final section discusses debris flows countermeasures.


  • countermeasures;
  • debris flow;
  • kinetic theories;
  • mathematical modelling;
  • rheology;
  • risk mitigation