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http://hdl.handle.net/2122/5057
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 | Journal: | Geophys. J. Int. | Series/Report no.: | /177(2009) | Publisher: | Blackwell | Issue Date: | 2009 | DOI: | 10.1111/j.1365-246X.2009.04093.x | Keywords: | Numerical solutions Inverse theory Radar interferometry Crustal structure Volcano monitoring |
Subject Classification: | 04. 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. |
Appears in Collections: | Article published / in press |
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