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Authors: Patanè, D.*
Barberi, G.*
Cocina, O.*
De Gori, P.*
Chiarabba, C.*
Title: Time-resolved seismic tomography detects magma intrusions at Mt. Etna
Title of journal: Science
Series/Report no.: /313 (2006)
Publisher: American Association for the Advancement of Science
Issue Date: 2006
DOI: 10.1126/science.1127724
Keywords: NONE
Abstract: The continuous volcanic and seismic activity at Mount Etna makes this volcano an important laboratory for seismological and geophysical studies. We used repeated three-dimensional tomography to detect variations in elastic parameters during different volcanic cycles, before and during the October 2002–January 2003 flank eruption. Well-defined anomalous low P- to S-wave velocity ratio volumes were revealed. Absent during the pre-eruptive period, the anomalies trace the intrusion of volatile-rich (Q4 weight percent) basaltic magma, most of which rose up only a few months before the onset of eruption. The observed time changes of velocity anomalies suggest that four-dimensional tomography provides a basis for more efficient volcano monitoring and shortand midterm eruption forecasting of explosive activity.
Appears in Collections:Papers Published / Papers in press
04.06.07. Tomography and anisotropy
04.01.02. Geological and geophysical evidences of deep processes
04.08.06. Volcano monitoring

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