Journal Article10.1146/ANNUREV.EARTH.26.1.643
Laboratory-derived friction laws and their application to seismic faulting
TL;DR: In this article, a review of the relationship between friction and the properties of earthquake faults is presented, as well as an interpretation of the friction state variable, including its interpretation as a measure of average asperity contact time and porosity within granular fault gouge.
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Abstract: This paper reviews rock friction and the frictional properties of earthquake faults. The basis for rate- and state-dependent friction laws is reviewed. The friction state variable is discussed, including its interpretation as a measure of average asperity contact time and porosity within granular fault gouge. Data are summarized showing that friction evolves even during truly stationary contact, and the connection between modern friction laws and the concept of “static” friction is discussed. Measurements of frictional healing, as evidenced by increasing static friction during quasistationary contact, are reviewed, as are their implications for fault healing. Shear localization in fault gouge is discussed, and the relationship between microstructures and friction is reviewed. These data indicate differences in the behavior of bare rock surfaces as compared to shear within granular fault gouge that can be attributed to dilation within fault gouge. Physical models for the characteristic friction distance are discussed and related to the problem of scaling this parameter to seismic faults. Earthquake afterslip, its relation to laboratory friction data, and the inverse correlation between afterslip and shallow coseismic slip are discussed in the context of a model for afterslip. Recent observations of the absence of afterslip are predicted by the model.
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Citations
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References
Foreshocks and pre‐events associated with the nucleation of large earthquakes
TL;DR: In this article, the authors proposed a theoretical model to explain the occurrence of foreshocks and pre-events associated with the nucleation of large earthquakes, and examined the transition process from quasistatic nucleation to high-speed rupture propagation through numerical simulations.
Viscosity determinations of some frictionally generated silicate melts : implications for fault zone rheology at high strain rates
TL;DR: In this paper, the authors used scanning electron microscopy to determine the major element compositions of some natural and artificial silicate glasses and their microcrystalline equivalents derived by the frictional melting of intermediate to acid protoliths.
Displacement on the san andreas fault subsequent to the 1966 parkfield earthquake
Stewart W. Smith,Max Wyss +1 more
TL;DR: In the year following the Parkfield earthquake, a maximum of at least 20 cm of displacement occurred on a 30 km section of the San Andreas fault, which far exceeded the surficial displacement at the time of the earthquake as mentioned in this paper.
Fault zone strength and failure criteria
TL;DR: In this paper, Coulomb failure criteria for brittle deformation of intact rock and fault gouge were discussed and the critical gouge layer thickness required to effect a transition from the standard Coulomb criterion to a modified failure law (referred to as Coulomb plasticity).
Dynamic faulting under rate-dependent friction
Alain Cochard,Raul Madariaga +1 more
TL;DR: In this article, the authors studied the effects of rate-dependent friction on the propagation of seismic rupture on active faults and developed a boundary integral equation method for studying rupture propagation along an antiplane fault in the presence of nonlinear ratedependent friction.