Methods of the fractal theory were applied to study the structure of epicenter fields of representative earthquakes (energy class K_p≥ 8) recorded from 1964 to 2002 in the Baikal region, including three subregions and six sectors. We show that the shock epicenter field in the Baikal region, subregions 2 and 3, and sectors 2, 3, and 5 is self-similar and similar, while the fractal estimates of the structure of the shock epicenter field in sectors 1 and 6 located at the flanks of the Baikal Rift Zone (BRZ) differ strongly. A tendency to a decrease in the cell dimension D_0 from southwest to northeast testifies to the transformation of quasi-areal distribution of epicenters of earthquakes to a quasi-linear structure. The chart of contour lines of D_0 characterizes the shock epicenter field in the BRZ as a structure formed predominantly in the regime of dynamic chaos.
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