De, Rumi and Ananthakrishna, G (2004) Power laws, precursors and predictability during failure. In: Europhysics Letters, 66 (5). pp. 715-721.
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We investigate the dynamics of a modi.ed Burridge-Knopo. model by introducing a dissipative term to mimic the bursts of acoustic emission (AE) from rock samples. The model explains many features of the statistics of AE signals observed in experiments such as the crossover in the exponent value from relatively small-amplitude AE signals to a larger regime, and their dependence on the pulling speed. Signi.cantly, we .nd that the cumulative energy dissipated identi.ed with acoustic emission can be used to predict a major slip event. We also .nd a data collapse of the acoustic activity for several major slip events describable by a universal stretched exponential with corrections in terms of time to failure.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to EDP Sciences.|
|Keywords:||self-organized criticality;earthquake fault model;acoustic-emission|
|Department/Centre:||Division of Chemical Sciences > Materials Research Centre
Division of Physical & Mathematical Sciences > Physics
|Date Deposited:||01 Dec 2004|
|Last Modified:||17 Jan 2012 06:53|
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