A fractal approach to the temporal distribution of microseismicity at the low eastern flank of Mt. Etna during 1989–1994
نویسندگان
چکیده
Seismicity affecting the low eastern flank of Mt. Etna shows clustering in time. We analysed a catalog of microearthquakes recorded by the four stations of the Osservatorio Sismologico di Protezione Civile di Acireale during the period 1989–1994. In general a strong deviation from periodic and random distribution was found. The temporal clustering is scale invariant and a fractal dimension can be derived to characterize it. Fractal dimensions seem to be correlated to the beginning of two major eruptions. q 1998 Elsevier Science B.V. All rights reserved.
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