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Authors: Trasatti, E.* 
Cianetti, S.* 
Giunchi, C.* 
Bonafede, M.* 
Piana Agostinetti, N.* 
Casu, F.* 
Manzo, M.* 
Title: Bayesian source inference of the 1993–1997 deformation atMount Etna (Italy) by numerical solutions
Issue Date: 2009
Series/Report no.: /177(2009)
DOI: 10.1111/j.1365-246X.2009.04093.x
Keywords: Numerical solutions
Inverse theory
Radar interferometry
Crustal structure
Volcano monitoring
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
Abstract: Deformation data collected at Mount Etna from 1993 to 1997 show that the inflation of the volcano edifice is accompanied by instability of the eastern flank. We propose a 3-D finite element model including topography and lateral variations of elastic constants. Source parameters of the inflating source are constrained by a direct search followed by an appraisal stage of the sampled solutions. The instability of the eastern flank is addressed using a kinematic approach, consisting of a rigid-body translation over a prescribed area. The aim is to evaluate how source parameters are affected by sliding of the eastern flank. When sliding is accounted for, the inferred source location shifts ∼1 km SE and its strength decreases by ∼20 per cent.
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