Information entropy analysis of seismicity of Umbria-Marche region (Central Italy)

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 catalogu...

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Bibliographic Details
Published in:Natural hazards and earth system sciences 2004-01, Vol.4 (5/6), p.691-695
Main Authors: Telesca, L., Lapenna, V., Lovallo, M.
Format: Article
Language:English
Subjects:
Continental interfaces, environment
Earth Sciences
Ocean, Atmosphere
Sciences of the Universe
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Summary: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.
ISSN:1684-9981
1561-8633
1684-9981
DOI:10.5194/nhess-4-691-2004