Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/5724
AuthorsAnzidei, M.* 
Boschi, E.* 
Cannelli, V.* 
Devoti, R.* 
Esposito, A.* 
Galvani, A.* 
Melini, D.* 
Pietrantonio, G.* 
Riguzzi, F.* 
Sepe, V.* 
Serpelloni, E.* 
TitleCoseismic deformation of the destructive April 6, 2009 L’Aquila earthquake (central Italy) from GPS data
Issue Date2009
Series/Report no./36 (2009)
DOI10.1029/2009GL039145
URIhttp://hdl.handle.net/2122/5724
KeywordsL'Aquila Earthquake
GPS
Subject Classification04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics 
AbstractOn April 6, 2009, 01:32:39 GMT, the city of L’Aquila was struck by a Mw 6.3 earthquake that killed 307 people, causing severe destruction and ground cracks in a wide area around the epicenter. Four days before the main shock we augmented the existing permanent GPS network with five GPS stations of the Central Apennine Geodetic Network (CaGeoNet) bordering the L’Aquila basin. The maximum horizontal and vertical coseismic surface displacements detected at these stations was 10.39 ± 0.45 cm and 15.64 ± 1.55 cm, respectively. Fixing the strike direction according to focal mechanism estimates, we estimated the source geometry with a non linear inversion of the geodetic data.Our best fitting fault model is a 13 15.7 km2 rectangular fault,SW-dipping at 55.3 ± 1.8 , consistent with the position of observed surface ruptures. The estimated slip (495 ± 29 mm) corresponds to a 6.3 moment magnitude, in excellent agreement with seismological data.
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