A5032380050- earthquake and tectonic studies
- Seismic Waves and Analysis
- Seismology and Earthquake Studies
- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Seismic Imaging and Inversion Techniques
- Earthquake Detection and Analysis
- Geophysics and Gravity Measurements
- Geophysics and Sensor Technology
- Structural Health Monitoring Techniques
- Geological and Geophysical Studies
- Geological Modeling and Analysis
- Geomagnetism and Paleomagnetism Studies
- Geological and Geophysical Studies Worldwide
- Seismic Performance and Analysis
- Landslides and related hazards
- Meteorological Phenomena and Simulations
- Geological Formations and Processes Exploration
- Maritime and Coastal Archaeology
- Geology and Paleoclimatology Research
- Underwater Acoustics Research
- Geophysical and Geoelectrical Methods
- Planetary Science and Exploration
- Structural Engineering and Vibration Analysis
- Masonry and Concrete Structural Analysis
Istituto Nazionale di Geofisica e Vulcanologia
2016-2025
Ospedale Cannizzaro
2022-2023
INGV Osservatorio Etneo
2007-2022
Universidad de Granada
2012-2017
Instituto Andaluz de Ciencias de la Tierra
2013-2017
Convergence
2011
New Frontier
2011
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2008-2010
University of Catania
1987
The continuous volcanic and seismic activity at Mount Etna makes this volcano an important laboratory for seismological geophysical studies. We used repeated three-dimensional tomography to detect variations in elastic parameters during different cycles, before the October 2002–January 2003 flank eruption. Well-defined anomalous low P - S -wave velocity ratio volumes were revealed. Absent pre-eruptive period, anomalies trace intrusion of volatile-rich (≥4 weight percent) basaltic magma, most...
The 2002 effusive flank eruption at Stromboli volcano started on December 28, after several months of strong explosive activity the summit craters. On 30, seismic network recorded two large failures and associated tsunami waves. This is first time that a collapse tsunami, their phenomena, have been by multi‐disciplinary monitoring system. Volcanological geophysical monitoring, as well thermal surveys performed immediately before failure, allowed us to define interpret sequence events. still...
After a period of deflation during the 1991-1993 flank eruption, Mount Etna underwent rapid inflation. Seismicity and ground deformation show that since 1994, huge volume magma intruded beneath volcano, producing from 1998 onward series eruptions at summit on volcano. The last these, started 27 October 2002, is still in progress can be considered one most explosive volcano recent times. Here we how geodetic data seismic deformation, between 1994 2001, indicate radial compression around an...
Abstract Since the second half of 1990s, eruptive activity Mount Etna has provided evidence that both explosive and effusive eruptions display periodic variations in discharge eruption style. In this work, a multiparametric approach, consisting comparing volcanological, geophysical, geochemical data, was applied to explore volcano's dynamics during 2009–2011. particular, temporal and/or spatial seismicity (volcano‐tectonic earthquakes, volcanic tremor, long‐period very long period events),...
Seismic, deformation, and volcanic gas observations offer independent complementary information on the activity state dynamics of quiescent eruptive volcanoes thus all contribute to risk assessment. In spite their wide use, there have been only a few efforts systematically integrate compare results these different monitoring techniques. Here we combine seismic (volcanic tremor long‐period seismicity), deformation (GPS), geochemical plume CO 2 /SO ratios) measurements in an attempt interpret...
Abstract A detailed 3D image of the Calabro-Ionian subduction system in central Mediterranean was obtained by means a seismic tomography, exploiting large dataset local earthquakes and computing algorithms able to build dense grid measure nodes. Results show that slab is continuous below southern sector Calabro-Peloritan Arc, but deformation processes developing at its edges are leading progressive narrowing, influencing tectonics magmatism surface, with possible stress concentration tip...
On July, 12, 2001, Mt. Etna experienced a sudden increase of seismic activity heralding one the most intense eruptions past 30 years. Between July 12 and 18, when eruption started, thousands small magnitude earthquakes occurred were recorded by dense network run Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania (INGV‐CT). Hypocentral depths very shallow, mostly located above 3 km b.s.l. clustered near summit area. The high quality dataset gives us unique opportunity to study...
A fundamental goal of volcano seismology is to understand the dynamics active magmatic systems in order assess eruptive behavior and associated hazard. Imaging magma conduits, quantification transport, investigation long‐period seismic sources, together with their temporal variations, are crucial for comprehension eruption‐triggering mechanisms. At Mt. Etna volcano, several intense episodes tremor activity were recorded during 2007, association strombolian and/or fire fountaining occurring...
Starting off from a review of previous literature on kinematic models the unstable eastern flank Mt. Etna, we propose new model. The model is based our analysis large quantity multidisciplinary data deriving an extensive and diverse network INGV monitoring devices deployed along slopes volcano. Our had twofold objective: first, investigating origin recently observed slow-slip events Etna; second, defining general for instability this area To end, investigated 2008–2013 period using collected...
This study presents the results of an experimental investigation conducted on a 2:3 scale model two-story stone masonry building. We tested UniKORE L.E.D.A. lab shake table, simulating Mw 6.3 earthquake ground motion that struck L’Aquila, Italy, 6 April 2009, with progressively increasing peak acceleration levels. installed network accelerometric sensors to capture its structural behaviour under seismic excitation. Medium-to lower-cost MEMS accelerometers (classes A and B) were compared...
After the 1982–1984 subsidence phase, ground uplift at Campi Flegrei Caldera resumed in 2005, while volcanic-tectonic earthquakes have steadily increased frequency and intensity since 2020, with a significant intensification observed 2023. This rise seismic activity enabled us to conduct new tomography using data collected from 2020 June 2024. In this work, we used 4,161 local (41,272 P-phases 14,683 S-phases) processed tomoDDPS code, considering 388,166 P 107,281 S differential times...
After the subsidence phase that followed 1982–1984 bradyseismic crisis, a gradual ground uplift at Campi Flegrei caldera resumed in 2005, while volcanic-tectonic earthquakes have steadily increased frequency and intensity since 2018, with significant intensification observed 2023. This rise seismic activity enabled new tomographic study using data collected from 2020 to June 2024. In this work, 4161 local (41,272 P-phases 14,683 S-phases) were processed tomoDDPS code, considering 388,166 P...
In this study we present the three‐dimensional Qp structure of Mount Etna volcano (Italy), obtained by using local earthquake data. The attenuation along ray paths ( t *), computed from high‐frequency decay velocity spectra, is used to reconstruct deep down 15 km depth. tomographic images reveal two broad low‐ anomalies at 0 and 3 depth, located south southwest summit area extending depth west a central high‐ anomaly between 6 joint analysis P wave allows us better constrain physics plumbing...
The persistent occurrence of long period (LP) events at Mt Etna became apparent with the installation first fixed broad‐band seismic network in late 2003. Repeating similar LP from Nov. ‘03 to Sept. ‘04 indicate a non‐destructive source process. We perform moment tensor (MT) inversions on stacked high S/N ratio representative signal, conducting grid search for geometry and L2‐inversion time function. Results NNW‐SSE oriented resonating sub‐vertical crack as most probable source. This result...
In this paper we report seismological evidence regarding the emplacement of dike that fed July 18 - August 9, 2001 lateral eruption at Mt. Etna volcano. The shallow intrusion and opening eruptive fracture system, which mostly occurred during 12, 18, were accompanied by one most intense seismic swarms last 20 years. A total 2694 earthquakes (1 £ Md 3.9) recorded from beginning swarm (July 12) to end (August 9). Seismicity shows upward migration basement relatively thin volcanic pile. clear...
Abstract From December 2005 to January 2006, an anomalous degassing episode was observed at Mount Etna, well‐correlated with increase in volcanic tremor, and the almost complete absence of eruptive activity. In same period, more than 10,000 very long period (VLP) events were detected. Through moment tensor inversion analyses VLP pulses, we obtained quantitative estimates volumetric variations associated these events. This allowed a investigation relationship between seismic activity, gas...
<p>In the Sicily Channel, volcanic activity has been concentrated mainly on Pantelleria and Linosa islands, while minor submarine volcanism took place in Adventure, Graham Nameless banks. The spanned mostly during Plio-Pleistocene, however, historical eruptions occurred 1831 Bank 1891 offshore Island. On Bank, 25 miles SW of Sciacca, eruption formed short-lived Ferdinandea Island that represents only Italian volcano active times currently almost completely unknown not yet monitored....
The seismic and deformation patterns observed on Mount Etna before during the 1991–1993 eruption, third largest since seventeenth century in terms of lava volume, are consistent with regional tectonic framework eastern Sicily. pattern stress field acting intermediate lower crust was defined at local scale by focal mechanisms microearthquakes occurring depths between 10 25 km beneath volcano. They provide evidence for a strike‐slip compressional regime maximum compressive component...
We estimated the attenuation laws of high-frequency seismic waves in shallow crust (depth 5 km) and earthquake source parameters by using a se- lected data set 320 events (2.6 MD 4.2), recorded at Mt. Etna volcano during last two flank eruptions occurring 2001 2002-2003. The quality factor (Q) was from spectra P S for 24 stations local permanent network applying spectral ratio technique. results show varia- tions both QP QS as function frequency, according to power law Q Q0f n , with ranging...
Volcanic tremor and low frequency events, together with infrasound signals, can represent important precursory phenomena of eruptive activity because their strict relationship mechanisms fluid flows through the volcano's feeding system. Important variations these seismo‐volcanic recorded at Mt. Etna volcano, occurred both in medium‐ short‐term before eruption, that took place on 13 May 2008. The most significant changes were observed content location LP as well volcanic location, allowed us...
We present the first application of a time reverse location method in volcanic setting, for family long-period (LP) events recorded on Mt Etna. Results are compared with locations determined using full moment tensor grid search inversion and cross-correlation method. From 2008 June 18 to July 3, 50 broad-band seismic stations were deployed Etna, Italy, close proximity summit. Two families LP detected dominant spectral peaks around 0.9 Hz. The large number summit allowed us locate all both...