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| Titel |
Co-seismic velocity changes during the 2009, Mw 6.3 L'Aquila earthquake inferred from seismic noise cross-correlations |
| VerfasserIn |
Lucia Zaccarelli, Nikolai Shapiro, Licia Faenza, Gaia Soldati, Alberto Michelini |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250047334
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| Zusammenfassung |
| We retrieved the crustal velocity variations by analyzing the cross-correlations of more than 2 years of continuous seismic records. The studied period includes the 6th of April, 2009, when a Mw 6.3 L'Aquila earthquake stroke the area under study.
Our estimates show evidence of a decrease of seismic velocities at the time of the occurrence of the earthquake's mainshock.
By performing the analysis for different frequency bands between 0.1 and 1 Hz, we observe that the velocity change is strongest at relatively short periods (0.5-1 Hz) suggesting that it is mainly related to the damaging of shallow soft layers by the co-seismic shaking. |
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