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| Titel |
Holocene activity of the Subequana Valley-Middle Aterno Valley normal fault system, south of the epicentral area of the April 6, 2009 "L'Aquila" earthquake (Mw 6.3): Implications for seismic hazard in central Italy |
| VerfasserIn |
Emanuela Falcucci, Stefano Gori, Marco Moro, Fabrizio Galadini, Anna Rita Pisani, Paola Fredi |
| 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 |
250041916
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| Zusammenfassung |
| Geological and paleoseismological analyses led along the 10 km long Subequana Valley fault, in central Apennines, located about 40 km S of the epicentre of the earthquake that struck central Italy in April 6, 2009 (Mw 6.3), indicate that this structure ruptured twice during the late Holocene, resulting in surface displacement with a slip per event of about 70-80 cm. The last activation occurred after the IV-II century b.C. and before the past millennium (perhaps during the II century b.C.), while the penultimate event occurred between 6381±30BP and 3511±37 PB. The presence of transtensive faults connecting the SVF with the 15 km long (at least) Middle Aterno Valley fault indicate that these structures belong to the same fault system, ≥26 km long, that probably ruptures during M≥6.7 earthquakes. Lastly, we analyse the possible influence of the Coulomb stress diffusion induced by the April 6 seismic event on the earthquake probability related to the analysed fault system. |
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