Strombolian volcanic activity as an intermittent phenomenonM. Bottiglieri1, S. De Martino2, 3, M. Falanga4, 3 and C. Godano1
1 Dipartimento di Scienze Ambientali, Seconda Università di Napoli - Via Vivaldi 43, I-81100 Caserta, Italia
2 Dipartimento di Matematica e Informatica, Università di Salerno - Via Ponte Don Melillo, I-84084 Fisciano (SA), Italia
3 INFN, gruppo collegato di Salerno - Via S. Allende, I-84081 Baronissi (SA), Italia
4 Dipartimento di Fisica, Università di Salerno - Via S. Allende, I-84081 Baronissi (SA), Italia
received 15 June 2007; accepted in final form 14 December 2007; published February 2008
published online 22 January 2008
Considering the characteristics of the Strombolian behaviour and the classical intermittency, we suggest that the well-known superposition of tremor and explosion-quakes of the volcanic activity can be described as an intermittent phenomenon. Indeed, a slightly modified non-linear map of Venkataramani et al. (Phys. Rev. Lett., 77 (1996) 5361), characterized by an intermittent behaviour, reproduces the statistical features of the experimental time series associated with the Strombolian activity, matching the distributions of the amplitude (size) and of the inter-times between two successive explosions.
91.40.-k - Volcanology.
02.50.-r - Probability theory, stochastic processes, and statistics.
05.45.Tp - Time series analysis.
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