Volume 72, Number 3, November 2005
|Page(s)||493 - 498|
|Section||Geophysics, astronomy, and astrophysics|
|Published online||05 October 2005|
Statistics of inter-time of Strombolian explosion-quakes
Dipartimento di Scienze Ambientali, Seconda Università di Napoli Via Vivaldi, 43, Caserta, Italy
2 Dipartimento di Fisica, Università di Salerno - Via S. Allende 84081 Baronissi (SA), Italy
3 INFM unità di Salerno - 84081 Baronissi (SA), Italy
4 INFN, sezione di Napoli, gruppo coordinato di Salerno - 84081 Baronissi (SA), Italy
Accepted: 13 September 2005
We consider long-time recorded seismic signals of Stromboli volcano to determine the inter-time distribution function of the Strombolian explosion-quakes. We show that it is Poissonian. Hence, the apparently observed periodic recurrence of the explosions is actually described by the constant rate of a Poisson process. Moreover, combining a diffusive model with the experimental inter-time distribution, we can determine the size distributions of the bubbles and infer the observed slug sizes.
PACS: 91.40.-k – Volcanology / 02.50.-r – Probability theory, stochastic processes, and statistics / 05.45.Tp – Time series analysis
© EDP Sciences, 2005
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