Large scale interaction of seismically active tectonic provinces: The example of Southern California

A typical feature of the large scale interaction of seismic active tectonic provinces of Southern California, which is expressed in a relatively fast jump change in the stress state of the crust over 0.5 month, is revealed on the basis of a geomechanical model and the results of instrumental observations for displacements of the crust. This provides us with new possibilities for the short-term prediction of significant seismic events for a period of a week to a month.