Articles | Volume 9, issue 1
Nonlin. Processes Geophys., 9, 31–35, 2002
https://doi.org/10.5194/npg-9-31-2002
Nonlin. Processes Geophys., 9, 31–35, 2002
https://doi.org/10.5194/npg-9-31-2002

  28 Feb 2002

28 Feb 2002

Self-sustained oscillator as a model for explosion quakes at Stromboli Volcano

S. De Martino1,3, C. Godano2, and M. Falanga1,3 S. De Martino et al.
  • 1Department of Physics, Salerno University, Via S. Allende, Baronissi (SA) 84084 Italy
  • 2Dipartimento di Scienze Ambientali, II Universita’ di Napoli, Caserta, Italy
  • 3INFM unita’ di Salerno, 84081 Baronissi (SA), Italy

Abstract. We analyze seismic signals produced by explosion-quakes at Stromboli Volcano. We use standard nonlinear procedures to search a low-order effective dynam-ics. The dimension of the reconstructed phase space depends on the number of samples. Namely larger time lengths cor-respond to dynamical systems of different complexity. If we restrict the analysis to the signal associated directly to the source (Chouet et al., 1997), we obtain a phase space dimen-sion equal to two. We reproduce this part of the signal with a simple single self-sustained oscillator.