Discrete Fault Models

Abstract Fault surfaces are characterized by an inhomogeneous friction distribution, that can be represented with asperity models. mechanics is dominated asperities, so a fruitful approach to use discrete models, where asperities the basic elements and state of fault described average values stress, slip on each asperity. Under reasonable assumptions, equations motion solved analytically, deeper understanding behavior system. dynamics has sticking mode, stationary, number slipping modes, corresponding separate or simultaneous asperities. Any seismic event sequence modes large variety source functions possible. Many earthquakes observed consequence failure two asperities: two-asperity model shows rich allows detailed study interaction between In this framework, evolution during coseismic interseismic intervals calculated in terms slip, stress state, energy release spectrum, including viscoelastic relaxation, creep perturbations from other faults. Discrete models may include neighboring faults, allowing assess conditions for occurrence sequences A review recent work subject presented applications real earthquakes.