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Authors: | Falcucci, E.* Gori, S.* Peronace, E.* Fubelli, G.* Moro, M.* Saroli, M.* Giaccio, B.* Messina, P.* Naso, G.* Scardia, G.* Sposato, A.* Voltaggio, M.* Galli, P.* Galadini, F.* |
Title: | The Paganica Fault and surface coseismic ruptures caused by the 6 april 2009 earthquake (L’Aquila, central Italy) | Journal: | Seismological Research Letters | Series/Report no.: | 6/80 (2009) | Publisher: | Seismological Society of America | Issue Date: | Nov-2009 | DOI: | 10.1785/gssrl.80.6.940 | Keywords: | Surface coseismic ruptures Paganica Fault earthquake |
Subject Classification: | 04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology 04. Solid Earth::04.04. Geology::04.04.09. Structural geology 04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution 04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics |
Abstract: | On 6 April 2009, at 01:32 GMT, an Mw 6.3 seismic event hit the central Apennines, severely damaging the town of L’Aquila and dozens of neighboring villages and resulting in approximately 300 casualties (Istituto Nazionale di Geofisica e Vulcanologia, http://www.ingv.it; MedNet, http://mednet.rm.ingv.it/proce- dure/events/QRCMT/090406_013322/qrcmt.html). This earth- quake was the strongest in central Italy since the devastating 1915 Fucino event (Mw 7.0). The INGV national seismic net- work located the hypocenter 5 km southwest of L’Aquila, 8–9 km deep. Based on this information and on the seismotectonic framework of the region, earthquake geologists traveled to the field to identify possible surface faulting (Emergeo Working Group 2009a, 2009b). The most convincing evidence of pri- mary surface rupture is along the Paganica fault, the geometry of which is consistent with seismological, synthetic aperture radar (SAR) and GPS data. Investigation of other known nor- mal faults of the area, i.e., the Mt. Pettino, Mt. San Franco, and Mt. Stabiata normal faults suggested that these structures were not activated during the April 6 shock (Emergeo Working Group 2009a, 2009b). In this report, we first describe the seismotectonic frame- work of the area, and then we present the field information that supports the occurrence of surficial displacement on the Paganica fault. |
Appears in Collections: | Article published / in press |
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Falcucci et al.,2009 proof.pdf | 129.44 kB | Adobe PDF | View/Open |
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