منابع مشابه
Earthquake nucleation on rate and state faults – Aging and slip laws
[1] We compare 2-D, quasi-static earthquake nucleation on rate-and-state faults under both ‘‘aging’’ and ‘‘slip’’ versions of the state evolution law. For both versions mature nucleation zones exhibit 2 primary regimes of growth: Well above and slightly above steady state, corresponding respectively to larger and smaller fault weakening rates. Well above steady state, aging-law nucleation takes...
متن کاملEarthquake nucleation on (aging) rate and state faults
[1] We obtain quasi-static, two-dimensional solutions for earthquake nucleation on faults obeying Dieterich’s ‘‘aging’’ version of the rate and state friction equations. Two distinct nucleation regimes are found, separated by roughly a/b 0.5, where a and b are the constitutive parameters relating changes in slip rate V and state q to frictional strength. When fault healing is unimportant (Vq/Dc...
متن کاملStress-Breakdown Time and Slip-Weakening Distance Inferred from Slip-Velocity Functions on Earthquake Faults
We estimate the critical slip-weakening distance on earthquake faults by using a new approach, which is independent of the estimate of fracture energy or radiated seismic energy. The approach is to find a physically based relation between the breakdown time of shear stress Tb, the time of peak slip-velocity Tpv, and the slip-weakening distance Dc, from the time histories of shear stress, slip, ...
متن کاملThe Dynamics of Strike-Slip Step-Overs with Linking Dip-Slip Faults
Fault step-overs with linking dip-slip faults are common features on long strike-slip fault systems worldwide. It has been noted by various researchers that under some circumstances, earthquakes can jump across fault step-overs to cascade into large events, while under other circumstances rupture is arrested at stepovers. There is also evidence that fault step-overs may be preferential location...
متن کاملSlip complexity in dynamic models of earthquake faults.
We summarize recent evidence that models of earthquake faults with dynamically unstable friction laws but no externally imposed heterogeneities can exhibit slip complexity. Two models are described here. The first is a one-dimensional model with velocity-weakening stick-slip friction; the second is a two-dimensional elastodynamic model with slip-weakening friction. Both exhibit small-event comp...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 2004
ISSN: 0148-0227
DOI: 10.1029/2003jb002894