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A dynamical analysis of the seismic activity of Villarrica volcano (Chile) during September–October 2000

Author

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  • Tárraga, Marta
  • Carniel, Roberto
  • Ortiz, Ramon
  • García, Alicia
  • Moreno, Hugo

Abstract

Although Villarrica volcano in Chile is one of the most active in the southern Andes, the literature studying its seismic activity is relatively scarce. An interesting problem recently tackled is the possibility for a regional tectonic event to trigger a change in the volcanic activity of this basaltic to basaltic-andesitic volcano, which is in turn reflected in the time evolution of the properly volcanic seismicity, especially in the form of a continuous volcanic tremor. In this work, we conduct a spectral, dynamical and statistical analysis of the tremor recorded during September and October 2000, in order to characterize the anomalous behaviour of the volcano following a tectonic event recorded on 20th September 2000. The observed dynamical transitions are compared with remote sensing and visual observations describing the changes in the eruptive style of the volcano.

Suggested Citation

  • Tárraga, Marta & Carniel, Roberto & Ortiz, Ramon & García, Alicia & Moreno, Hugo, 2008. "A dynamical analysis of the seismic activity of Villarrica volcano (Chile) during September–October 2000," Chaos, Solitons & Fractals, Elsevier, vol. 37(5), pages 1292-1299.
    • Handle: RePEc:eee:chsofr:v:37:y:2008:i:5:p:1292-1299
    DOI: 10.1016/j.chaos.2006.10.062
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    References listed on IDEAS

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    1. Oliveros, Anggi Quintero & Carniel, Roberto & Tárraga, Marta & Aspinall, Willy, 2008. "On the application of Hidden Markov Model and Bayesian Belief Network to seismic noise at Las Cañadas Caldera, Tenerife, Spain," Chaos, Solitons & Fractals, Elsevier, vol. 37(3), pages 849-857.
    2. Currenti, Gilda & Negro, Ciro Del & Lapenna, Vincenzo & Telesca, Luciano, 2005. "Fluctuation analysis of the hourly time variability of volcano-magnetic signals recorded at Mt. Etna Volcano, Sicily (Italy)," Chaos, Solitons & Fractals, Elsevier, vol. 23(5), pages 1921-1929.
    3. Del Pin, Enrico & Carniel, Roberto & Tárraga, Marta, 2008. "Event recognition by detrended fluctuation analysis: An application to Teide–Pico Viejo volcanic complex, Tenerife, Spain," Chaos, Solitons & Fractals, Elsevier, vol. 36(5), pages 1173-1180.
    4. Carniel, Roberto & Pin, Enrico Del & Budai, Riccardo & Pascolo, Paolo, 2005. "Identifying timescales and possible precursors of the awake to asleep transition in EOG time series," Chaos, Solitons & Fractals, Elsevier, vol. 23(4), pages 1259-1266.
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