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Statistical Similarity between the Compression of a Porous Material and Earthquakes
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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 (SiO2). 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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BARÓ I URBEA, Jordi, CORRAL, Álvaro, ILLA I TORTÓS, Xavier, PLANES VILA, Antoni, SALJE, Ekhard k. h., SCHRANZ, Wilfried, SOTO-PARRA, Daniel e., VIVES I SANTA-EULÀLIA, Eduard. Statistical Similarity between the Compression of a Porous Material and Earthquakes. _Physical Review Letters_. 2013. Vol. 110, núm. 8, pàgs. 088702-088702. [consulta: 25 de gener de 2026]. ISSN: 0031-9007. [Disponible a: https://hdl.handle.net/2445/133442]