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| Titel |
The seismicity in the L'Aquila area (Italy) with particular regard to 1985 earthquake |
| VerfasserIn |
Fabrizio Bernardi, Maria Grazia Ciaccio, Barbara Palombo |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250042325
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| Zusammenfassung |
| We study moderate-magnitude earthquakes (Ml ≥3.5) occurred in the Aquila region recorded by the Istituto Nazionale di Geofisica e Vulcanologia from 1981 to 2009 (CSI, Castello et al., 2006 - http://www.ingv.it/CSI/ ; and ISIDe, http://iside.rm.ingv.it/iside/standard/index.jsp) as well as local temporary seismic networks
We identify three major sequences (1985, 1994, 1996) occurring before the 6.th April 2009 Mw=6.3 earthquake.
The 1985 earthquake (Ml=4.2) is the larger earthquake occurred in the investigated region till April 2009. The 1994 (Ml=3.9) and 1996 (Ml=4.1) occurred in the Campotosto area (NE to L’Aquila).
We computed the source moment tensor using surface waves (Giardini et al., 1993) for the main shocks of the 1985 (Mw=4.7) and 1996 (Mw=4.4) sequences. The solutions show normal fault ruptures. We do not find a reliable solution for the major 1994 sequence earthquake. This suggests, that the magnitude of this event is probably below Mw≈4.2, which is the minimum magnitude threshold for this method. |
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