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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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.
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Language:English
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Continental interfaces, environment
Earth Sciences
Ocean, Atmosphere
Sciences of the Universe
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Lapenna, V.
Lovallo, M.
description 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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subjects Continental interfaces, environment
Earth Sciences
Ocean, Atmosphere
Sciences of the Universe
title Information entropy analysis of seismicity of Umbria-Marche region (Central Italy)
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