| Volumes and Issues Contents of Issue 1 Special Issue |
www.nonlin-processes-geophys.net/11/119/2004/
doi:10.5194/npg-11-119-2004
© Author(s) 2004. This work is licensed
under a Creative Commons License.
Non-linear analysis of geomagnetic time series from Etna volcano
1Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Catania, Italy
2Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi – Universit` a di Catania, Italy
Abstract. An intensive nonlinear analysis of geomagnetic time series from the magnetic network on Etna volcano was carried out to investigate the dynamical behavior of magnetic anomalies in volcanic areas. The short-term predictability of the geomagnetic time series was evaluated to establish a possible low-dimensional deterministic dynamics. We estimated the predictive ability of both a nonlinear forecasting technique and a global autoregressive model by comparing the prediction errors. Our findings highlight that volcanomagnetic signals are the result of complex processes that cannot easily be predicted. There is slight evidence based on nonlinear predictions, that the geomagnetic time series are to be governed by many variables, whose time evolution could be better regarded as arising from complex high dimensional processes.
Full Article (PDF, 427 KB) Special Issue
Citation: Currenti, G., Del Negro, C., Fortuna, L., Napoli, R., and Vicari, A.: Non-linear analysis of geomagnetic time series from Etna volcano, Nonlin. Processes Geophys., 11, 119-125, doi:10.5194/npg-11-119-2004, 2004. Bibtex EndNote Reference Manager XML
