The 2009 L'Aquila (central Italy) MW6.3 earthquake: Main shock and aftershocks
作者： C. Chiarabba , A. Amato , M. Anselmi , P. Baccheschi , I. Bianchi
DOI: 10.1029/2009GL039627
关键词:
摘要: [1] A M w 6.3 earthquake struck on April 6, 2009 the Abruzzi region (central Italy) producing vast damage in L'Aquila town and surroundings. In this paper we present location geometry of fault system as obtained by analysis main shock aftershocks recorded permanent temporary networks. The distribution aftershocks, 712 selected events with L > 2.3 20 4.0, defines a complex, 40 km long, NW trending extensional structure. segment extends for 15―18 dips at 45° to SW, between 10 2 depth. extent coincides surface trace Paganica fault, poorly known normal that, after event, has been quoted accommodate extension area. We observe migration seismicity north an echelon that can rupture future large earthquakes.
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