Space and time clustering properties of seismic activity, affecting Etna Volcano (Italy) during 1981–1991, are investigated by fractal dimension analysis. Very interesting volcanic and seismic activity occurred within this time interval. Temporal evolution of the time fractal dimension Dt calculated on a moving window, reveals correlation with the eruptive processes at different time scales confirming results obtained for a different time span (De Rubeis et al., 1997). Spatial fractal dimension Ds shows to be negatively correlated with the time fractal dimension Dt , suggesting a peculiar dynamic pattern associated with volcanic processes.
Clustering properties of Etna seismicity during 1981-1991
VINCIGUERRA, Sergio Carmelo
2000-01-01
Abstract
Space and time clustering properties of seismic activity, affecting Etna Volcano (Italy) during 1981–1991, are investigated by fractal dimension analysis. Very interesting volcanic and seismic activity occurred within this time interval. Temporal evolution of the time fractal dimension Dt calculated on a moving window, reveals correlation with the eruptive processes at different time scales confirming results obtained for a different time span (De Rubeis et al., 1997). Spatial fractal dimension Ds shows to be negatively correlated with the time fractal dimension Dt , suggesting a peculiar dynamic pattern associated with volcanic processes.
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