Shear and normal load perturbations on a two‐dimensional continuous fault: 1. Static triggering

Perfettini, H.; Schmittbuhl, Jean; Cochard, Alain

doi:10.1029/2002jb001804

Cited by 31 publications

(73 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[6] A rate-and-state friction law is ascribed to slider 1 [Dieterich, 1979;Ruina, 1983] as often assumed in seismic cycle models [Rice, 1993;Lapusta and Rice, 2003;Perfettini et al, 2003aPerfettini et al, , 2003b. The frictional stress is…”

Section: Slider 1: Seismogenic Fault Zonementioning

confidence: 99%

Stress transfer and strain rate variations during the seismic cycle

Perfettini

Avouac

2004

J. Geophys. Res.

Self Cite

View full text Add to dashboard Cite

[1] The balance of forces implies stress transfers during the seismic cycle between the elastobrittle upper crust and the viscoelastic lower crust. This could induce observable time variations of crustal straining in the interseismic period. We simulate these variations using a one-dimensional system of springs, sliders, and dashpot loaded by a constant force. The seismogenic zone and the zone of afterslip below are modeled from rate-and-state friction. The ductile deeper fault zone is modeled from a viscous slider with Newtonian viscosity n. The force per unit length, F, must exceed a critical value F c to overcome friction resistance of the fault system. This simple system produces periodic earthquakes. The recurrence period, T cycle , and the duration of the postseismic relaxation phase, which is driven dominantly by afterslip, then both scale linearly with n. Between two earthquakes, interseismic strain buildup across the whole system is nonstationary with the convergence rates V i , just after each earthquake, being systematically higher than the value V f at the end of the interseismic period. We showwhere Dt is the coseismic stress drop and V 0 is the long-term fault slip rate. It follows that departure from stationary strain buildup is higher if the contribution of viscous forces to the force balance is small compared to the coseismic stress drop (due to a low viscosity or low convergence rate, for example). This simple model is meant to show that the far-field deformation rate in the interseismic period, which can be determined from geodetic measurements, might not necessarily be uniform and equal to the long-term geologic rate.

show abstract

Section: Slider 1: Seismogenic Fault Zonementioning

confidence: 99%

Stress transfer and strain rate variations during the seismic cycle

Perfettini

Avouac

2004

J. Geophys. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The coefficient of friction =, where  and  are the shear and normal stresses on the fault, respectively, can be expressed as (Dieterich, 1981;Perfettini et al, 2003a):…”

Section: Simulation Of the Nucleation And Failure Processes Affected mentioning

confidence: 99%

“…where V(t) is the sliding velocity, t is a state parameter that may be interpreted physically as the evolutionary process of the contact between the two fault surfaces (Dieterich, 1981(Dieterich, , 1994Perfettini et al, 2003a), a and b are frictional parameters of the fault, and V * ,  * ,   are reference values. In this case, the coefficient of friction is expressed as:…”

Section: Simulation Of the Nucleation And Failure Processes Affected mentioning

confidence: 99%

“…A continuous model is used to simulate the source fault of the Ning'er earthquake with variable frictional properties along the strike direction (Perfettini et al, 2003a). According to the result of a rupture process inversion of the 2007 Ning'er earthquake (Zhang et al, 2009), the slip area is about 40 km along the strike direction of the fault plane.…”

Section: Model and Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Effect of tidal stress on fault nucleation and failure of the 2007 M s6.4 Ning’er earthquake

Xie

Lei

et al. 2015

Sci. China Earth Sci.

View full text Add to dashboard Cite

Based on calculations of the tidal Coulomb failure stress and investigations of the correlation between the Earth tide and the Ning'er earthquake sequence, the processes of fault nucleation and failure were simulated. In these simulations we consider the influence of tidal stresses using the rate-and state-dependent friction laws. Furthermore, the effects on tidal triggering due to the stress amplitude and periodic oscillation properties were investigated, and the triggering effects between the tidal normal and tidal shear stresses were compared. The results showed that the Ning'er earthquake sequence was a physical consequence of tidal effects. A transition period T 0 exists between the nucleation and failure processes of a seismic fault. When the period T of stress is equal to or becomes larger than T 0 , the fault response becomes dependent on the periodic features of the loading stress; however, for T < T 0 , the response of the fault is nearly independent of the period. Both the tidal normal and tidal shear stresses have similar effect in the nucleation and failure processes; the clock changes generally increase with the maximum amplitudes of the tidal stresses. Tidal normal and tidal shear stresses with positive amplitudes mainly induce earthquake triggering; however, the triggering effects induced by negative tidal stresses are smaller and faults are not sensitive to negative tidal stresses. Our results primarily reveal the physical mechanisms of tidal stress triggering.tidal Coulomb failure stress, Ning'er earthquake, rate-and state-dependent friction law, tidal period Citation:

show abstract

“…To investigate the external stress perturbation effect, we test a step-like (static) shear stress change during the interseismic period (e.g., Perfettini et al 2003;Cho et al 2009) in additional experiments. The details are described in a later discussion section.…”

Section: Sse Eqmentioning

confidence: 99%

Interval modulation of recurrent slow slip events by two types of earthquake loading

Mitsui

2015

Earth Planet Sp

View full text Add to dashboard Cite

Geodetic studies have discovered recurrent spontaneous slow slip events (SSEs) at major faults. The SSE recurrence intervals should reflect stress states at the faults, including load effects of large earthquakes in neighboring areas. Here, we focus on temporal changes of the SSE recurrence intervals. We perform numerical model experiments with the rate-and state-dependent friction in a three-dimensional elastic medium to simulate the SSE recurrence interval changes by the earthquake loading effects. One result is gradual shortening of the SSE recurrence intervals owing to a nucleation process of a nearby large earthquake, as revealed by several previous studies. This effect reflects magnitude of the elastic interaction between the SSE and earthquake areas. As an example, when the distance between the SSE and earthquake areas is almost zero, a short-term rapid decrease of the SSE recurrence intervals precedes the earthquake occurrence (approximately by a decade). The other result is that external stress perturbation, as large as 0.1 MPa, can reduce the SSE recurrence intervals to a similar extent. Furthermore, the interval modulation by the stress perturbation continues for a prolonged period until the occurrence of the adjacent earthquake. Both effects may be observable, as is advancing at the Boso zone, Japan, but their separation is difficult under the present circumstances.

show abstract

Shear and normal load perturbations on a two‐dimensional continuous fault: 1. Static triggering

Cited by 31 publications

References 42 publications

Stress transfer and strain rate variations during the seismic cycle

Stress transfer and strain rate variations during the seismic cycle

Effect of tidal stress on fault nucleation and failure of the 2007 M s6.4 Ning’er earthquake

Interval modulation of recurrent slow slip events by two types of earthquake loading

Contact Info

Product

Resources

About