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2 Acta Geophysica Polonica

2 2000

2 Senatorski P.

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Model of earthquake cycles with a slip-dependent constitutive law. Part I - Theory

100%

Senatorski P.

2000

tom Vol. 48, nr 3

299-316

3D model of interacting faults is presented The use of the slip-weakening friction law, tectonic loading from the sides of a fault zone, and continuous time formulation of governing equations are its major ingredients. The model can be used for simulations of seismic activity both in time scales of single earthquakes, earthquake cycles, and a long-term system evolution. It allows to study time variations of energy release and tectonic stresses, as well as patterns of slips, slip rates and internal stresses measured at individual locations. Results of such an analysis are presented in Part II of this paper.

Model of earthquake cycles with a slip-dependent constitutive law. Part II - Simulations

88%

Senatorski P.

2000

tom Vol. 48, nr 4

423-453

Long-term seismic activity is simulated using a 3D model of interacting faults presented in Part I of this paper. It is show that the system can generate complex behavior, with earthquakes of all sizes, characteristic earthquake cycles with features changing from one cycle to another, and interrelations between local quantities in qualitative agreement with laboratory data. By comparison of a single, two distant and two close fault behavior the role of fault interactions is studied. Interactions with a secondary fault, despite its low activity, change patterns of seismicity generated by the system.