Self-similar slip pulses during rate-and-state earthquake nucleation
نویسندگان
چکیده
منابع مشابه
Self-similar slip pulses during rate-and-state earthquake nucleation
[1] For a wide range of conditions, earthquake nucleation zones on rateand statedependent faults that obey either of the popular state evolution laws expand as they accelerate. Under the ‘‘slip’’ evolution law, which experiments show to be the more relevant law for nucleation, this expansion takes the form of a unidirectional slip pulse. In numerical simulations these pulses often tend to appro...
متن کاملRubin and Ampuero: Slip Pulses during Earthquake Nucleation
For a wide range of conditions, earthquake nucleation zones 6 on rate-and state-dependent faults that obey either of the popular state evo-7 lution laws expand as they accelerate. Under the " slip " evolution law, which 8 experiments show to be the more relevant law for nucleation, this expansion 9 takes the form of a unidirectional slip pulse. In numerical simulations these 10 pulses often ten...
متن کاملEarthquake 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...
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[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...
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We examine the development of a frictional instability, with diverging sliding rate, at the interface of elastic bodies in contact. Evolution of friction is determined by a slip rate and state dependence. Following Viesca (2016 Phys. Rev. E93, 060202(R). (doi:10.1103/PhysRevE.93.060202)), we show through an appropriate change of variable, the existence of blow-up solutions that are fixed points...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 2009
ISSN: 0148-0227
DOI: 10.1029/2009jb006529