Models of seismotectonic systems with dry friction

Several models of a seismic regime and block dynamics that are based on frictional self-oscillations in systems with nonlinear dry friction are considered. The set of Burridge-Knopoff models is presented to describe the generation of earthquakes with the relative movement of the fault sides. The disk model, which describes rotary dynamics of the crustal blocks, and the model of the block dynamics in the foredeeps, are examined. It is established that a regime of chaotic oscillations exists in a certain range of parameters (frictional force, the velocity of leading blocks, etc.) in the considered systems. This limits the predictability of these systems.