Articles | Volume 9, issue 1
https://doi.org/10.5194/npg-9-31-2002
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 Martino, C. Godano, and M. Falanga

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.