Statistical similarity between the compression of a porous material and earthquakes.
Phys Rev Lett
; 110(8): 088702, 2013 Feb 22.
Article
em En
| MEDLINE
| ID: mdl-23473208
ABSTRACT
It has long been stated that there are profound analogies between fracture experiments and earthquakes; however, few works attempt a complete characterization of the parallels between these so separate phenomena. We study the acoustic emission events produced during the compression of Vycor (SiO(2)). The Gutenberg-Richter law, the modified Omori's law, and the law of aftershock productivity hold for a minimum of 5 decades, are independent of the compression rate, and keep stationary for all the duration of the experiments. The waiting-time distribution fulfills a unified scaling law with a power-law exponent close to 2.45 for long times, which is explained in terms of the temporal variations of the activity rate.
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2013
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Article