A syn-eruptive ground deformation episode measured by GPS, during the 2001 eruption on the upper southern flank of Mt Etna

2004 ◽  
Vol 66 (4) ◽  
pp. 336-341 ◽  
Author(s):  
Alessandro Bonforte ◽  
Francesco Guglielmino ◽  
Mimmo Palano ◽  
Giuseppe Puglisi
Keyword(s):  
Ground Deformation ◽  
Mt Etna ◽  
Southern Flank ◽  
2001 Eruption

scholarly journals Finite element analysis of ground deformation due to dike intrusion with applications to Mt. Etna volcano

2009 ◽  
Vol 47 (5) ◽  
Author(s):  
A. Occhipinti Amato ◽  
M. Elia ◽  
A. Bonaccorso ◽  
G. La Rosa
Keyword(s):  
Ground Deformation ◽  
Near Field ◽  
Elastic Half Space ◽  
Etna Volcano ◽  
Element Analysis ◽  
Dike Intrusion ◽  
Dislocation Models ◽  
Mt Etna ◽  
Realistic Topography ◽  
2001 Eruption

A 2D finite elements study was carried out to analyse the effects caused by dike intrusion inside a heterogeneous medium and with a realistic topography of Mt. Etna volcano. Firstly, the method (dimension domain, elements type) was calibrated using plane strain models in elastic half-spaces; the results were compared with those obtained from analytical dislocation models. Then the effects caused both by the topographic variations and the presence of multi-layered medium on the surface, were studied. In particular, an application was then considered to Mt. Etna by taking into account the real topography and the stratification deduced from seismic tomography. In these conditions, the effects expected by the dike, employed to model the 2001 eruption under simple elastic half-space medium conditions, were computed, showing that topography is extremely important, at least in the near field.

Intrusive Mechanisms at Mt. Etna Forerunning the July-August 2001 Eruption from Seismic and Ground Deformation Data

2004 ◽  
Vol 161 (7) ◽  
pp. 1469-1487 ◽  
Author(s):  
A. Bonaccorso ◽  
S. D’Amico ◽  
M. Mattia ◽  
D. Patanè
Keyword(s):  
Ground Deformation ◽  
Mt Etna ◽  
2001 Eruption

scholarly journals Combining High- and Low-Rate Geodetic Data Analysis for Unveiling Rapid Magma Transfer Feeding a Sequence of Violent Summit Paroxysms at Etna in Late 2015

2021 ◽  
Vol 11 (10) ◽  
pp. 4630
Author(s):  
Alessandro Bonforte ◽  
Flavio Cannavò ◽  
Salvatore Gambino ◽  
Francesco Guglielmino
Keyword(s):  
Ground Deformation ◽  
High Rate ◽  
Rate Data ◽  
Scale Analysis ◽  
Feeding System ◽  
Magma Sources ◽  
Mt Etna ◽  
Multi Temporal ◽  
Gnss Measurements ◽  
Low Rate

We propose a multi-temporal-scale analysis of ground deformation data using both high-rate tilt and GNSS measurements and the DInSAR and daily GNSS solutions in order to investigate a sequence of four paroxysmal episodes of the Voragine crater occurring in December 2015 at Mt. Etna (Italy). The analysis aimed at inferring the magma sources feeding a sequence of very violent eruptions, in order to understand the dynamics and to image the shallow feeding system of the volcano that enabled such a rapid magma accumulation and discharge. The high-rate data allowed us to constrain the sources responsible for the fast and violent dynamics of each paroxysm, while the cumulated deformation measured by DInSAR and daily GNSS solutions, over a period of 12 days encompassing the entire eruptive sequence, also showed the deeper part of the source involved in the considered period, where magma was stored. We defined the dynamics and rates of the magma transfer, with a middle-depth storage of gas-rich magma that charges, more or less continuously, a shallower level where magma stops temporarily, accumulating pressure due to the gas exsolution. This machine-gun-like mechanism could represent a general conceptual model for similar events at Etna and at all volcanoes.

Petrologic evidence of a complex plumbing system feeding the July–August 2001 eruption of Mt. Etna, Sicily, Italy

2006 ◽  
Vol 69 (4) ◽  
pp. 401-421 ◽  
Author(s):  
Rosa Anna Corsaro ◽  
Lucia Miraglia ◽  
Massimo Pompilio
Keyword(s):  
Plumbing System ◽  
Mt Etna ◽  
2001 Eruption

scholarly journals Long-term dynamics across a volcanic rift: 21 years of microgravity and GPS observations on the southern flank of Mt. Etna volcano

2017 ◽  
Vol 344 ◽  
pp. 174-184 ◽  
Author(s):  
Alessandro Bonforte ◽  
Giovanni Fanizza ◽  
Filippo Greco ◽  
Alfredo Matera ◽  
Roberto Sulpizio
Keyword(s):  
Etna Volcano ◽  
Mt Etna ◽  
Southern Flank ◽  
Gps Observations

scholarly journals Tilt offset associated with local seismicity: the Mt. Etna January 9, 2001 seismic swarm.

2016 ◽  
Vol 8 (1) ◽  
pp. 514-522 ◽  
Author(s):  
Salvatore Gambino
Keyword(s):  
Local Stress ◽  
Tectonic Structure ◽  
Local Seismicity ◽  
Seismic Swarm ◽  
Long Baseline ◽  
Volcanic Source ◽  
Active Tectonic ◽  
Mt Etna ◽  
Measured Deformation ◽  
2001 Eruption

AbstractOn the 9th of January 2001 a seismic swarm on the southeastern flank of Mt. Etna at 3.5 km beside sea level (b.s.l.), caused co-seismic variations on short and long baseline tiltmeters of the Mt. Etna permanent tilt network.Taking account of the geometry and mechanism of the active tectonic structure obtained by seismological studies, the theoretical tilt linked to the faulting source was calculated at multiple different recording stations. It was found that the amount of measured deformation exceeded that which was generated seismically, indicating that much of the deformation along the fault was aseismic.The 9 January 2001 episode represents a shear response to a local stress caused by a volcanic source that acted in the period preceding the 2001 eruption. Tilt data also suggest a marked slip of 70-140 cm along the fault, probably due to the presence of fluids.

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