The Umbria-Marche region (central Italy) is one of the most seismically active area of Italian Peninsula, and recently it was characterized by the intense earthquake (M = 5.9) occurred on September 26, 1997. We analyzed the time-scaling properties of the seismicity of the area during the 1997-1998 seismic crisis by means of the detrended fluctuation analysis, a method that permits the detection of long-range correlations in time series, possibly influenced by non-stationarities. Our results highlight a persistent feature of the earthquake sequence, that seem independent on the threshold magnitude.
Time-scaling properties of the Umbria-Marche 1997-1998 seismic crisis, investigated by the detrended fluctuation analysis of interevent time series
Telesca L;
2004
Abstract
The Umbria-Marche region (central Italy) is one of the most seismically active area of Italian Peninsula, and recently it was characterized by the intense earthquake (M = 5.9) occurred on September 26, 1997. We analyzed the time-scaling properties of the seismicity of the area during the 1997-1998 seismic crisis by means of the detrended fluctuation analysis, a method that permits the detection of long-range correlations in time series, possibly influenced by non-stationarities. Our results highlight a persistent feature of the earthquake sequence, that seem independent on the threshold magnitude.File in questo prodotto:
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