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We proceeded from general physical concepts based, on the one hand, on theUmoff-Poynting theorem, and on the other, on the phenomenological theory ofearthquakes, and formulated the following question: What are the directions ofenergy flows in the earthquake source before and after the formation of a mainrupture in it? A non-standard technique for experimental research of this issuehas been developed. The epicentral zone of the main shock is considered as akind of track detector, and foreshocks and aftershocks are considered as marks(tracers) marking the propagation in the source of some factor that has energyand stimulates the excitation of foreshocks and aftershocks in astressed-strained rock mass. By processing and analyzing a large volume ofobservation data, it was found that over time, foreshocks, on average, approachthe epicenter of the main shock, while aftershocks, on the contrary, move awayfrom the epicenter. A method is indicated for verifying the result by studyingthe magnitude dependence of foreshock convergence and aftershock divergence.Keywords: foreshock, aftershock, main rupture, evolution equation, nonlineardiffusion waves, fault length.

Energy flows in the earthquake source before and after the main shock