Título del libro: Complex Monitoring Of Volcanic Activity: Methods And Results
Título del capítulo: Observation of Vulcanian explosions with seismic and acoustic data at Popocatépetl volcano, Mexico
CARLOS MIGUEL VALDES GONZALEZ; NICHOLAS ROBERT VARLEY MIDDLE;
Autores externos:
Idioma:
Inglés
Año de publicación:
2013
Resumen:
A series of Vulcanian explosions at Popocatépetl volcano during 2008-2012 was studied, with an examination of the associated acoustic-seismic data to improve our knowledge of the generation of this kind of events. The seismic data indicate a complex nature of simultaneous processes associated with the volcanic explosions. Four distinct frequency bands were analysed: very-long-period (VLP), long-period (LP), short-period (SP), and high-frequency (HF). The VLP seismic signals were recorded only for the largest events with seismic energy greater than 115 MJ at Tlamacas (PBMV) station, and of 1691 MJ at Colibrí (PBCV) station. The seismic energy of the 2008-2012 Popocatépetl explosions was comparable with the seismic energy reported for the majority of Vulcanian explosions at andesitic volcanoes around the world. In the case of acoustic energy, it was slightly higher for Popocatépetl explosions as compared to other volcanoes. The Volcanic Acoustic-Seismic Ratio (VASR) was greater than 1 for the majority of the explosions indicating that the acoustic energy of the Popocatépetl explosions was greater than the seismic energy. The delay times between the seismic and the acoustic signals show that the depth of the acoustic-seismic signals sources was shallow, approximately between 0 and 220 m beneath the lava dome or crater floor. © 2009 by Nova Science Publishers, Inc. All rights reserved.
Entidades citadas de la UNAM:
ISBN:
9781624179853
Editorial:
Nova Science Publishers, Inc. Nombre de la publicación:
Observation of Vulcanian explosions with seismic and acoustic data at Popocatépetl volcano, Mexico
Página inicial:
13
Página final:
33
Tipo de producto:
Capítulo de un Libro
