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Authors: Patanè, D.* 
Mattia, M.* 
Di Grazia, G.* 
Cannavò, F.* 
Giampiccolo, E.* 
Musumeci, C.* 
Montalto, P.* 
Boschi, E.* 
Title: Insights into the dynamical processes of the 2007 Stromboli eruption and possible meteorological influences on the magmatic system
Issue Date: 2007
Series/Report no.: / 34 (2007)
DOI: 10.1029/2007GL031730
Keywords: magmatic system
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
Abstract: The unrest of Stromboli volcano leading to the February 27–April 2, 2007 eruptive period and to the March 15 paroxysm is constrained by combining broadband seismic data and 1-Hz GPS (High Rate GPS – hereinafter HRGPS) measurements. During the pre-eruptive stage, the simultaneous examination of seismic and HRGPS data, together with weather parameters, suggests the possible influence of external perturbations on the magmatic system, which evolved toward a critical state after January 2007. Some days after the onset of the eruption, a sudden change of the seismic and eruptive behaviour was recognized, while ground deformation began to show a deflation. The March 15 paroxysm was preceded, about two days before, by a peak of the HRGPS spectral power densities (a small inflation) and by the occurrence of a few VT earthquakes located at depths down to 3.5 km b.s.l.. These findings constrain, for the first time at Stromboli volcano, the deep origin of a fast rising magma batch, rich in gas, that led to a strong explosive event.
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