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www.nat-hazards-earth-syst-sci.net/4/691/2004/
doi:10.5194/nhess-4-691-2004
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Information entropy analysis of seismicity of Umbria-Marche region (Central Italy)
Institute of Methodologies for Environmental Analysis, National Research Council, Tito, Italy
Abstract. We investigated by means of nonlinear tools the temporal distribution of 1983-2003 seismicity of the Umbria-Marche region, Central Italy, that was struck by a strong event (M=5.8) on 26 September 1997. Information entropy analysis has been performed over the full and the aftershock-depleted catalogue. We analysed the series of the interevent times between successive earthquakes and the series of their magnitudes. The time evolution of this measure shows a clear anomalous behaviour in correspondence with the stronger event, more evident in the full catalogue than in the aftershock-depleted one.
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Citation: Telesca, L., Lapenna, V., and Lovallo, M.: Information entropy analysis of seismicity of Umbria-Marche region (Central Italy), Nat. Hazards Earth Syst. Sci., 4, 691-695, doi:10.5194/nhess-4-691-2004, 2004. Bibtex EndNote Reference Manager XML
