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Authors: Bagagli, Matteo* 
Montagna, Chiara Paola* 
Papale, Paolo* 
Longo, Antonella* 
Title: Signature of magmatic processes in strainmeter records at Campi Flegrei (Italy)
Issue Date: 2017
Series/Report no.: /44 (2017)
DOI: 10.1002/2016GL071875
Abstract: Volcanic unrest at Campi Flegrei caldera, Southern Italy, is characterized by episodes of ground deformation, seismicity, and enhanced fumarolic activity; whether its origin is purely hydrothermal or magmatic is highly debated. We have identified ground deformation patterns in strainmeter records from a heightened unrest period in late 2006, closely resembling synthetic signals from numerical simulations of shallow magma chamber replenishment and mixing. Together with other recent findings, our results depict a situation whereby periodic arrivals of deep magma feed a shallow intrusion at 3–4 km depth. These results suggest that the analysis of strainmeter records, coupled with advanced numerical simulations of magma dynamics, could lead to new approaches in imaging subsurface dynamic processes in volcanic areas.
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