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Authors: Aloisi, M.* 
Bonaccorso, A.* 
Cannavò, F.* 
Gambino, S.* 
Mattia, M.* 
Puglisi, G.* 
Boschi, E.* 
Title: A new dyke intrusion style for the Mount Etna May 2008 eruption modelled through continuous tilt and GPS data
Issue Date: 2009
Series/Report no.: /21 (2009)
DOI: 10.1111/j.1365-3121.2009.00889.x
Keywords: etna
Subject Classification04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations 
Abstract: After a recharge phase that began in 2007, on 13 May 2008, a new eruption started on Mt. Etna volcano. The final intrusion was very fast, accompanied by a violent seismic swarm and marked by ground deformation recorded at permanent tilt and GPS stations. The violence of the eruptive event generated concern that the eruptive fissures might propagate downslope towards populated areas. The ground deformation modelling explains both the mechanism of the intrusion as well as the attempt of the dyke to propagate in the shallower part of the northern sector of the volcano. We show that the 2008 intrusion was characterized by a mechanism, which is new and different to the ones modelled in previous eruptions, following the path of the central conduit in the first part of the intrusion (below 1.6 km) and then breaking off towards the east in the last shallow part.
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