A MODEL OF SEISMICITY IN A BLOCK MEDIUMA. A. Lyubushin, Jr
A shallow-focus seismicity model is suggested, based on the concept of the earth's crust as a hierarchical structure of blocks. Seismicity is qualitatively represented as the result of a dynamic balance between two opposing processes in the hierarchy including (1) the consolidation of small blocks into large ones, and (2) the destruction (deconsolidation) of large blocks which results from aftershocks. The model is represented by a system of simple dynamic equations with random parameters. Results of numerical experiments are presented.