by Pica Ciamarra M, Dalton F, de Arcangelis L, Godano C, Lippiello E, Petri A
Abstract:
The presence of impurities between two surfaces may greatly affect their frictional properties. In this article, we investigate the role of the impurities by studying experimental and numerical models of geophysical interest. Both model and experiments are considered to be representative of the dynamics of an earthquake fault and both systems reliably produce salient traits of earthquake dynamics such as stick-slip intermittent dynamics and power-law event distributions. The impurities are granular particles enclosed in the fault, known as fault gouge. We consider the role of the granular particles in the statistics of the slip events, and in the production of acoustic emissions.
Reference:
The Role of Interstitial Impurities in the Frictional Instability of Seismic Fault Models (Pica Ciamarra M, Dalton F, de Arcangelis L, Godano C, Lippiello E, Petri A), In TRIBOLOGY LETTERS, volume 48, 2012. (Articolo in rivista)
Bibtex Entry:
@article{mpc12,
author = {Pica Ciamarra M, and Dalton F, and de Arcangelis L, and Godano C, and Lippiello E, and Petri A,},
pages = {89-94},
title = {The Role of Interstitial Impurities in the Frictional Instability of Seismic Fault Models},
volume = {48},
note = {Articolo in rivista},
issn = {1023-8883},
journal = {TRIBOLOGY LETTERS},
doi = {10.1007/s11249-012-9954-3},
year = {2012},
wosId = {WOS:000308070800010},
scopusId = {2-s2.0-84865647738},
abstract = {The presence of impurities between two surfaces
may greatly affect their frictional properties. In this
article, we investigate the role of the impurities by studying
experimental and numerical models of geophysical interest.
Both model and experiments are considered to be representative
of the dynamics of an earthquake fault and both
systems reliably produce salient traits of earthquake
dynamics such as stick-slip intermittent dynamics and
power-law event distributions. The impurities are granular
particles enclosed in the fault, known as fault gouge. We
consider the role of the granular particles in the statistics of
the slip events, and in the production of acoustic emissions.}
}