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Authors: Mattia, M.* 
Bruno, V.* 
Caltabiano, T.* 
Cannata, A.* 
Cannavò, F.* 
D'Alessandro, W.* 
Di Grazia, G.* 
Federico, C.* 
Giammanco, S.* 
La Spina, A.* 
Liuzzo, M.* 
Longo, M.* 
Monaco, C.* 
Patanè, D.* 
Salerno, G.* 
Title: A comprehensive interpretative model of slow slip events on Mt. Etna’s eastern flank
Journal: Geochemistry, Geophysics, Geosystems 
Series/Report no.: 3/16 (2015)
Publisher: American Geophysical Union
Issue Date: 5-Mar-2015
DOI: 10.1002/2014GC005585
Keywords: Mt. Etna
monitoring data
flank instability
gas geochemistry
volcanic tremor
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous 
Abstract: Starting off from a review of previous literature on kinematic models of the unstable eastern flank of Mt. Etna, we propose a new model. The model is based on our analysis of a large quantity of multidisciplinary data deriving from an extensive and diverse network of INGV monitoring devices deployed along the slopes of the volcano. Our analysis had a twofold objective: first, investigating the origin of the recently observed slow-slip events on the eastern flank of Mt. Etna; and second, defining a general kinematic model for the instability of this area of the volcano. To this end, we investigated the 2008–2013 period using data collected from different geochemical, geodetic, and seismic networks, integrated with the tectonic and geologic features of the volcano and including the volcanic activity during the observation period. The complex correlations between the large quantities of multidisciplinary data have given us the opportunity to infer, as outlined in this work, that the fluids of volcanic origin and their interrelationship with aquifers, tectonic and morphological features play a dominant role in the large scale instability of the eastern flank of Mt. Etna. Furthermore, we suggest that changes in the strain distribution due to volcanic inflation/deflation cycles are closely connected to changes in shallow depth fluid circulation. Finally, we propose a general framework for both the short and long term modeling of the large flank displacements observed.
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