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Título: On data reduction methods for volcanic tremor characterization: the 2012 eruption of Copahue volcano, Southern Andes
Autor(es): Melchor, Iván
Almendros, Javier
Carniel, Roberto
Konstantinou, Kostas I.
Hantusch, Marcia
Caselli, Alberto Tomás
Fecha de publicación: 2020
Editorial: Springer Open
Citación: Melchor, I., Almendros, J., Carniel, R., Konstantinou, K. I., Hantusch, M., & Caselli, A. (2020). On data reduction methods for volcanic tremor characterization: the 2012 eruption of Copahue volcano, Southern Andes. Earth, Planets and Space; 72 (134); 1-10.
Revista: Earth, Planets and Space
Abstract: Improving the ability to detect and characterize long-duration volcanic tremor is crucial to understand the longterm dynamics and unrest of volcanic systems. We have applied data reduction methods (permutation entropy and polarization degree, among others) to characterize the seismic wave feld near Copahue volcano (Southern Andes) between June 2012 and January 2013, when phreatomagmatic episodes occurred. During the selected period, a total of 52 long-duration events with energy above the background occurred. Among them, 32 were classifed as volcanic tremors and the remaining as noise bursts. Characterizing each event by averaging its reduced parameters, allowed us to study the range of variability of the diferent events types. We found that, compared to noise burst, tremors have lower permutation entropies and higher dominant polarization degrees. This characterization is a suitable tool for detecting long-duration volcanic tremors in the ambient seismic wave feld, even if the SNR is low.
Resumen: -
URI: http://rid.unrn.edu.ar/handle/20.500.12049/7385
Identificador DOI: https://doi.org/10.1186/s40623-020-01270-7
ISSN: 1880-5981
Otros enlaces: https://earth-planets-space.springeropen.com/articles/10.1186/s40623-020-01270-7#Sec18
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