Modeling of ALOS and COSMO-SkyMed satellite data at Mt Etna: Implications on relation between seismic activation of the Pernicana fault system and volcanic unrest

2012 ◽  
Vol 125 ◽  
pp. 64-72 ◽  
Author(s):  
Gilda Currenti ◽  
Giuseppe Solaro ◽  
Rosalba Napoli ◽  
Antonio Pepe ◽  
Alessandro Bonaccorso ◽  
...  
Keyword(s):  
Satellite Data ◽  
Fault System ◽  
Volcanic Unrest ◽  
Seismic Activation ◽  
Mt Etna

scholarly journals Application of the Wiener filter to magnetic profiling in the volcanic environment of Mt. Etna (Italy)

1996 ◽  
Vol 39 (1) ◽  
Author(s):  
C. Del Negro
Keyword(s):  
Synthetic Data ◽  
Wiener Filter ◽  
Magnetic Anomalies ◽  
Fault System ◽  
Volcanic Area ◽  
Wiener Filters ◽  
Mt Etna ◽  
Band Pass ◽  
Magnetic Profile ◽  
Mean Square Error Criterion

The frequency-domain Wiener filtering was applied to magnetic anomalies in the volcanic area of Mt. Etna. This filter, under suitable conditions (additive noise, linear processing and mean-square error criterion), can furnish an effective tool for discriminating the geologic feature of interest (the signal) from the noise. The filter was first tested with synthetic data. Afterwards it was applied to a magnetic profile carried out across the principal fault system of the Mt. Etna volcano, that hosted the dykes feeding both the 1989 and the 1991-93 eruptions. The magnetic anomalies linked to the volcanic section and those linked to the contact between the clay basement and the lava coverage show significant spectral overlap. Thus by estimating the power spectrum of the signal, obtained resolving the forward problem, a least-squares Wiener filter has been designed. In such context, it was possible to verify the effectiveness of Wiener filters, whereas traditional band-pass filtering proved inadequate. In fact, analysis of the noise showed that all the meaningful components of the observed magnetic field were resolved. The results put further constraints on location and geometry of the shallow plumbing system of Mt. Etna.

Volcanic unrest leading to the July–August 2001 lateral eruption at Mt. Etna: Seismological constraints

2015 ◽  
Vol 304 ◽  
pp. 11-23 ◽  
Author(s):  
Simona Sicali ◽  
Graziella Barberi ◽  
Ornella Cocina ◽  
Carla Musumeci ◽  
Domenico Patanè
Keyword(s):  
Volcanic Unrest ◽  
Mt Etna

scholarly journals Short-term detection of volcanic unrest at Mt. Etna by means of a multi-station warning system

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Salvatore Spampinato ◽  
Horst Langer ◽  
Alfio Messina ◽  
Susanna Falsaperla
Keyword(s):  
Warning System ◽  
Short Term ◽  
Volcanic Unrest ◽  
Mt Etna

Spectral properties of volcanic materials from hyperspectral field and satellite data compared with LiDAR data at Mt. Etna

2009 ◽  
Vol 11 (2) ◽  
pp. 142-155 ◽  
Author(s):  
Claudia Spinetti ◽  
Francesco Mazzarini ◽  
Ruggero Casacchia ◽  
Laura Colini ◽  
Marco Neri ◽  
...  
Keyword(s):  
Satellite Data ◽  
Spectral Properties ◽  
Lidar Data ◽  
Mt Etna

scholarly journals Seismo-tectonic behavior of the Pernicana Fault System (Mt Etna): A gauge for volcano flank instability?

2013 ◽  
Vol 118 (8) ◽  
pp. 4398-4409 ◽  
Author(s):  
J. Ruch ◽  
S. Pepe ◽  
F. Casu ◽  
G. Solaro ◽  
A. Pepe ◽  
...  
Keyword(s):  
Fault System ◽  
Mt Etna ◽  
Volcano Flank Instability

scholarly journals High-Resolution and Accurate Topography Reconstruction of Mount Etna from Pleiades Satellite Data

2019 ◽  
Vol 11 (24) ◽  
pp. 2983 ◽  
Author(s):  
Monica Palaseanu-Lovejoy ◽  
Marina Bisson ◽  
Claudia Spinetti ◽  
Maria Fabrizia Buongiorno ◽  
Oleg Alexandrov ◽  
...  
Keyword(s):  
High Resolution ◽  
Spatial Resolution ◽  
Satellite Data ◽  
Morphological Changes ◽  
Volcanic Eruptions ◽  
Mount Etna ◽  
Surface Model ◽  
Potential Hazard ◽  
Mt Etna ◽  
Tool Set

The areas characterized by dynamic and rapid morphological changes need accurate topography information with frequent updates, especially if these are populated and involve infrastructures. This is particularly true in active volcanic areas such as Mount (Mt.) Etna, located in the northeastern portion of Sicily, Italy. The Mt. Etna volcano is periodically characterized by explosive and effusive eruptions and represents a potential hazard for several thousands of local people and hundreds of tourists present on the volcano itself. In this work, a high-resolution, high vertical accuracy digital surface model (DSM) of Mt. Etna was derived from Pleiades satellite data using the National Aeronautics and Space Administration (NASA) Ames Stereo Pipeline (ASP) tool set. We believe that this is the first time that the ASP using Pleiades imagery has been applied to Mt. Etna with sub-meter vertical root mean square error (RMSE) results. The model covers an area of about 400 km2 with a spatial resolution of 2 m and centers on the summit portion of the volcano. The model was validated by using a set of reference ground control points (GCP) obtaining a vertical RMSE of 0.78 m. The described procedure provides an avenue to obtain DSMs at high spatial resolution and elevation accuracy in a relatively short amount of processing time, making the procedure itself suitable to reproduce topographies often indispensable during the emergency management case of volcanic eruptions.

New evidence for the form and extent of the Pernicana Fault System (Mt. Etna) from structural and soil–gas surveying

1998 ◽  
Vol 84 (1-2) ◽  
pp. 143-152 ◽  
Author(s):  
Raffaele Azzaro ◽  
Stefano Branca ◽  
Salvatore Giammanco ◽  
Sergio Gurrieri ◽  
Riccardo Rasà ◽  
...  
Keyword(s):  
Soil Gas ◽  
Fault System ◽  
Mt Etna ◽  
New Evidence

scholarly journals Mapping and evaluating kinematics and the stress and strain field at active faults and fissures: a comparison between field and drone data at the NE rift, Mt Etna (Italy)

Solid Earth ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 801-816
Author(s):  
Alessandro Tibaldi ◽  
Noemi Corti ◽  
Emanuela De Beni ◽  
Fabio Luca Bonali ◽  
Susanna Falsaperla ◽  
...  
Keyword(s):  
Stress Field ◽  
Best Practice ◽  
Ground Deformation ◽  
Active Faults ◽  
Fault System ◽  
Normal Faults ◽  
Extension Rate ◽  
Eastern Flank ◽  
Mt Etna ◽  
Ne Rift

Abstract. We collected drone data to quantify the kinematics at extensional fractures and normal faults, integrated this information with seismological data to reconstruct the stress field, and critically compared the results with previous fieldwork to assess the best practice. As a key site, we analyzed a sector of the northeast rift of Mt Etna, an area affected by continuous ground deformation linked to gravity sliding of the volcano's eastern flank and dike injections. The studied sector is characterized also by the existence of eruptive craters and fissures and lava flows. This work shows that this rift segment is affected by a series of NNE- to NE-striking, parallel extensional fractures characterized by an opening mode along an average N105.7∘ vector. The stress field is characterized by a σHmin trending northwest–southeast. Normal faults strike parallel to the extensional fractures. The extensional strain obtained by cumulating the net offset at extensional fractures with the fault heave gives a stretching ratio of 1.003 in the northeastern part of the study area and 1.005 in the southwestern part. Given a maximum age of 1614 CE for the offset lavas, we obtained an extension rate of 1.9 cm yr−1 for the last 406 years. This value is consistent with the slip along the Pernicana Fault system, confirming that the NE rift structures accommodate the sliding of the eastern flank of the volcano.

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