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http://hdl.handle.net/2122/2524
Authors: | Piccinini, D.* Chiarabba, C.* Augliera, P.* |
Title: | Compression along the northern Apenninines? Evidence from the Mw 5.3 Monghidoro earthquake | Journal: | Terra Nova | Series/Report no.: | 2 / 18 (2006) | Publisher: | Blackwell | Issue Date: | 2006 | DOI: | 10.1111/j.1365-3121.2005.00667.x | Keywords: | seismological data | Subject Classification: | 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 |
Abstract: | In this paper, we present the seismological data recorded during the deployment of a dense three-component seismic network installed a few hours after the 2003 Mw 5.3 Monghidoro earthquake, in northern Apennines. The main shock focal solutions derived from polarities distribution and body wave modelling of regional broadband data show a NE–SW striking reverse mechanism. Accurate relative locations of aftershocks and the inversion of focal mechanisms show that earthquakes occurred on a NW-dipping backthrust within the Adria lithosphere under a NW-trending horizontal compression. The observed compression is a secondary process possibly explained by differential motion within the Adriatic lithosphere. Fault geometry and kinematics is controlled by pre-existing structures. |
Appears in Collections: | Article published / in press |
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