Shifts in the eruptive styles at Stromboli in 2010–2014 revealed by ground-based InSAR data

Scientific Reports
By: , and 

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Abstract

Ground-Based Interferometric Synthetic Aperture Radar (GBInSAR) is an efficient technique for capturing short, subtle episodes of conduit pressurization in open vent volcanoes like Stromboli (Italy), because it can detect very shallow magma storage, which is difficult to identify using other methods. This technique allows the user to choose the optimal radar location for measuring the most significant deformation signal, provides an exceptional geometrical resolution, and allows for continuous monitoring of the deformation. Here, we present and model ground displacements collected at Stromboli by GBInSAR from January 2010 to August 2014. During this period, the volcano experienced several episodes of intense volcanic activity, culminated in the effusive flank eruption of August 2014. Modelling of the deformation allowed us to estimate a source depth of 482 ± 46 m a.s.l. The cumulative volume change was 4.7 ± 2.6 × 105 m3. The strain energy of the source was evaluated 3–5 times higher than the surface energy needed to open the 6–7 August eruptive fissure. The analysis proposed here can help forecast shifts in the eruptive style and especially the onset of flank eruptions at Stromboli and at similar volcanic systems (e.g. Etna, Piton de La Fournaise, Kilauea).

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Shifts in the eruptive styles at Stromboli in 2010–2014 revealed by ground-based InSAR data
Series title Scientific Reports
DOI 10.1038/srep13569
Issue 5
Year Published 2015
Language English
Publisher Nature Publishing Group (NPG)
Contributing office(s) Volcano Science Center
Description 11 p.
Country Italy
Other Geospatial Stromboli
Online Only (Y/N) N
Additional Online Files (Y/N) N