scholarly journals Tomographic images and 3D earthquake locations of the seismic swarm preceding the 2001 Mt. Etna eruption: Evidence for a dyke intrusion

2002 ◽  
Vol 29 (10) ◽  
pp. 135-1-135-4 ◽  
Author(s):  
Domenico Patane ◽  
Claudio Chiarabba ◽  
Ornella Cocina ◽  
Pasquale De Gori ◽  
Milena Moretti ◽  
...  
Keyword(s):  
Tomographic Images ◽  
Earthquake Locations ◽  
Seismic Swarm ◽  
Dyke Intrusion ◽  
Mt Etna

scholarly journals Large dyke intrusion and small eruption: The December 24, 2018 Mt. Etna eruption imaged by Sentinel‐1 data

Terra Nova ◽  
2019 ◽  
Vol 31 (4) ◽  
pp. 405-412 ◽  
Author(s):  
Alessandro Bonforte ◽  
Francesco Guglielmino ◽  
Giuseppe Puglisi
Keyword(s):  
Dyke Intrusion ◽  
Mt Etna

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.

Intrusive mechanism of the 2008–2009 Mt. Etna eruption: Constraints by tomographic images and stress tensor analysis

2012 ◽  
Vol 229-230 ◽  
pp. 50-63 ◽  
Author(s):  
Salvatore Alparone ◽  
Graziella Barberi ◽  
Ornella Cocina ◽  
Elisabetta Giampiccolo ◽  
Carla Musumeci ◽  
...  
Keyword(s):  
Stress Tensor ◽  
Tensor Analysis ◽  
Tomographic Images ◽  
Mt Etna

scholarly journals GPS tomography tests for DInSAR applications on Mt. Etna

2015 ◽  
Vol 58 (3) ◽  
Author(s):  
Massimo Aranzulla ◽  
Giuseppe Puglisi
Keyword(s):  
Electromagnetic Waves ◽  
A Priori ◽  
Geodetic Network ◽  
Atmospheric Model ◽  
Volcanic Area ◽  
Random Choice ◽  
Gps Receivers ◽  
Tomographic Images ◽  
Mt Etna ◽  
Radar Wave

<p>Tropospheric artifacts of SAR images in a volcanic area like Mt. Etna cause ambiguity in the interpretation of deformations with such technique. It would be useful to measure the delay caused by tropospheric anomalies in synthetic aperture radar (SAR) satellite signals (phase of the back-scattered radar wave) that could be interpreted as deformation. From the delay estimated through the GPS data processing, the tropospheric tomography of electromagnetic waves refractivity, has been performed using the SIMULps12 software. The aim of this study was to perform software synthetic tests by using SIMULps12 applied to atmospheric tomography and to verify the influence of the different GPS geodetic network configurations on obtaining a reliable tomography. Three different anomalies of increasing complexity have been investigated in order to understand the representative parameters of a correct tomography, the best spatial resolution and the portions of space in which the tomography is reliable. The tests also focused on fixing/establishing the a-priori atmospheric model and the critical values of the main parameters involved in the tomographic inversion. To this end, we made a random choice of two days, necessary to define the tomographic problem. Three different network configurations with 15, 30 and 90 GPS receivers were studied. The results indicate that the well-resolved area of tomographic images increases with the number of GPS receivers not linearly, and that the actual GPS network of 42 receivers is capable of revealing/detecting the atmospheric anomalies.</p>

scholarly journals Intrusive Seismic Swarms as Possible Precursors of Destructive Earthquakes on Mt. Etna’s Eastern Flank

2021 ◽  
Author(s):  
Salvatore Gambino ◽  
Giovanni Distefano
Keyword(s):  
Seismic Moment ◽  
Occurrence Frequency ◽  
Fault System ◽  
Seismic Events ◽  
Seismic Parameters ◽  
Eastern Flank ◽  
Seismic Swarm ◽  
Shallow Earthquakes ◽  
Mt Etna ◽  
Seismic Swarms

Abstract The Timpe Fault System (TFS) represents the source of shallow earthquakes that strike numerous towns and villages on Mt. Etna eastern flank. In the last 40 years, three destructive seismic events reached I0 = VIII EMS (heavily damaging) - in 1984 (October 25), 2002 (October 29) and 2018 (December 26). These events followed a few days after the occurrence of strong seismic swarms and the sudden acceleration of the eastern flank seaward. However, if the 2002 and 2018 events were caused by stress induced by eruptive dike propagation, in October 1984 no eruption occurred. In this work, parameters such as localization, cumulative seismic moment and hourly occurrence frequency of the 1984 seismic swarm, have been analyzed and shown to have typical values of Mt. Etna intrusive seismic swarms. This suggests that the 1984 episode may have been an aborted intrusive magma episode that triggered similar processes (long and powerful intrusions with acceleration of the eastern flank movement and destructive earthquakes), as in 2002 and 2018. These three episodes suggest that an evaluation of some seismic parameters during future intrusive swarms may furnish indications of a possible re-activation of the TFS.

Identification of Radon Anomalies at Mt. Etna (Sicily) by Using Three Different Methods

2010 ◽  
Vol 3 (1) ◽  
pp. 1-16 ◽  
Author(s):  
S. La Delfa ◽  
F. Vizzini ◽  
G. Patanè
Keyword(s):  
Mt Etna
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