Articles | Volume 8, issue 4
Nat. Hazards Earth Syst. Sci., 8, 789–794, 2008
https://doi.org/10.5194/nhess-8-789-2008
Nat. Hazards Earth Syst. Sci., 8, 789–794, 2008
https://doi.org/10.5194/nhess-8-789-2008

  31 Jul 2008

31 Jul 2008

Near-Real time analysis of seismic data of active volcanoes: Software implementations of time sequence data analysis

J. Vila2,1, R. Ortiz3, M. Tárraga3, R. Macià4,2, A. García3, D. Kumar5, and A. M. Correig2,1 J. Vila et al.
  • 1Departament d'Astronomia i Meteorologia, Facultat de Física, Universitat de Barcelona, Martí Franquès, 1, 08028 Barcelona, Spain
  • 2Laboratori d'Estudis Geofísics "Eduard Fontserè", Institut d'Estudis Catalans, Carme, 47, 08001 Barcelona, Spain
  • 3Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
  • 4Departament de Matemàtica Aplicada II, Universitat Politècnica de Catalunya, Pla de Palau, 18, 08003 Barcelona, Spain
  • 5Centre for Informatics and Systems, University of Coimbra, Polo II - Pinhal de Marrocos, 3030-290, Coimbra, Portugal

Abstract. This paper presents the development and applications of a software-based quality control system that monitors volcano activity in near-real time. On the premise that external seismic manifestations provide information directly related to the internal status of a volcano, here we analyzed variations in background seismic noise. By continuous analysis of variations in seismic waveforms, we detected clear indications of changes in the internal status. The application of this method to data recorded in Villarrica (Chile) and Tungurahua (Ecuador) volcanoes demonstrates that it is suitable to be used as a forecasting tool. A recent application of this developed software-based quality control to the real-time monitoring of Teide – Pico Viejo volcanic complex (Spain) anticipated external episodes of volcanic activity, thus corroborating the advantages and capacity of the methodology when implemented as an automatic real-time procedure.

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