A5013611555- Seismic Waves and Analysis
- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Geomagnetism and Paleomagnetism Studies
- Geophysics and Gravity Measurements
- Seismic Imaging and Inversion Techniques
- Geophysics and Sensor Technology
- Landslides and related hazards
- Structural Health Monitoring Techniques
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geophysical and Geoelectrical Methods
- Geophysical Methods and Applications
- CO2 Sequestration and Geologic Interactions
- Geology and Paleoclimatology Research
- Complex Systems and Time Series Analysis
- Advanced Fiber Optic Sensors
- Cryospheric studies and observations
- Planetary Science and Exploration
- Geological and Geophysical Studies
- Methane Hydrates and Related Phenomena
- Rock Mechanics and Modeling
- Hydraulic Fracturing and Reservoir Analysis
Istituto Nazionale di Geofisica e Vulcanologia
2016-2025
INGV Osservatorio Etneo
2007-2024
Radiotelevisione Italiana (Italy)
2020-2023
Osservatorio Astrofisico di Catania
2022
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2003-2016
University of Catania
2003
Understanding physical processes prior to and during volcanic eruptions has improved significantly in recent years. However, uncertainties about subsurface structures distorting observed signals undetected within the volcano prevent volcanologists infer subtle triggering mechanisms of phenomena. Here, we demonstrate that distributed acoustic sensing (DAS) with optical fibres allows us identify events remotely image hidden near-surface structural features. We detect characterize strain...
Volcano-seismic signals can help for volcanic hazard estimation and eruption forecasting. However, the underlying mechanism their low frequency components is still a matter of debate. Here, we show signatures dynamic strain records from Distributed Acoustic Sensing in frequencies at Vulcano Island, Italy. Signs unrest have been observed since September 2021, with CO2 degassing occurrence long period very events. We interrogated fiber-optic telecommunication cable on-shore off-shore linking...
In Earth Sciences there is a growing interest in studies concerning soil-radon activity, due to its potential as tracer of numerous natural phenomena. Our work marks an advance the comprehension interplay between tectonic volcanic eruptions and gas release through faults. Soil-radon measurements, acquired on Mt. Etna volcano 2009-2011, were analyzed. radon probe sensitive changes both seismic activity. Radon data reviewed light meteorological parameters. Soil samples analyzed characterize...
Time‐dependent, or 4‐D, microgravity changes observed at the Laguna del Maule volcanic field, Chile, since 2013, indicate significant (1.5 × 10 11 kg) ongoing mass injection. Mass injection is focused along Troncoso fault, and subparallel structures beneath lake 1.5–2 km depth, best modeled by a vertical rectangular prism source. The low‐density change (156 to 307 kg/m 3 ) limited depth extent suggest mechanism of hydrothermal fluid intrusion into existing voids, voids created substantial...
SUMMARY Elastic finite element models are applied to investigate the effects of topography and medium heterogeneities on surface deformation gravity field produced by volcanic pressure sources. Changes in cannot be interpreted only terms gain mass disregarding ground rocks surrounding source. Contributions changes depend also subsurface redistribution driven dilation Both were firstly evaluated solving a coupled axisymmetric problem estimate heterogeneities. Numerical results show...
Abstract We have modeled the fast dike intrusion that started on 24 December 2018 at Mount Etna. The was accompanied by an intense seismicity swarm also continued following day. Since previous studies did not detail overall chain of events in time during magma ascent, here we propose a combined analytical and FEM modeling all available continuous deformation data, focusing signals over 2 days (24–25 December) when networks recorded clear variations directly related to ascent. High‐rate GPS...
Abstract. We demonstrate the capability of distributed acoustic sensing (DAS) to record volcano-related dynamic strain at Etna (Italy). In summer 2019, we gathered DAS measurements from a 1.5 km long fibre in shallow trench and seismic records conventional dense array comprised 26 broadband sensors that was deployed Piano delle Concazze close summit area. activity during acquisition period gives extraordinary opportunity changes (∼ 10−8 strain) correspondence with volcanic events. To...
[1] Geophysical (tilt, seismic tremor and gravity signals), geochemical (crater SO2flux) infrared satellite measurements are presented discussed to track the temporal evolution of lava fountain episode occurring at Mt Etna volcano on 10 April 2011. The multi-disciplinary approach provides insight into a gas-rich magma source trapped in shallow storage zone inside edifice. This generated fast ascending gas-magma dispersed flow feeding causing depressurization deeper storage. Satellite thermal...
A main challenge in open conduit volcanoes is to detect and interpret the ultra-small strain (<10 –6 ) associated with minor but critical eruptions such as lava fountains. Two years after flank eruption of December 2018, Etna generated a violent spectacular eruptive sequence There were 23 episodes from 13, 2020 March 31, 2021, 17 which brief period 16 February 31 an intensified occurrence rate. The high-precision borehole dilatometer network recorded significant changes forerunning...
Between 13 December 2020 and 21 February 2022, Etna volcano produced a sequence of 66 paroxysmal explosive eruptions, with Strombolian activity at the summit craters climaxing in lava fountains eruption columns extending several kilometers above craters, accompanied by minor short-lasting flows from crater rim. We selected three these episodes that occurred within short space time, between 12 March 2021, different magnitude (i.e., erupted volume) intensity mass rate or instantaneous rate),...
Distributed Dynamic Strain Sensing (DDSS), also known as Acoustic (DAS), is becoming a popular tool in array seismology. A new generation of engineered fibers being developed to improve sensitivity and reduce the noise floor comparison standard fibers, which are conventionally used telecommunication networks. Nevertheless, already have extensive coverage around Earth's surface, so it motivates use existing infrastructure DDSS surveys avoid costs logistics. In this study, we compare data from...
Abstract During February 2023, a total of 32 individual distributed acoustic sensing (DAS) systems acted jointly as global seismic monitoring network. The aim this Global DAS Month campaign was to coordinate diverse network organizations, instruments, and file formats gain knowledge move toward the next generation earthquake networks. campaign, 156 earthquakes magnitude 5 or larger were reported by U.S. Geological Survey contributors shared data for 60 min after each event’s origin time....
During the last twenty years most active crater on Etna has been South-East (SEC), which since 2011 erupted over 100 lava fountains. These events are characterized by violent explosive activity lasting an average of few hours. In addition to this type events, SEC also produced several effusive i.e. with emission flows beyond rim a short duration but longer than that fountains, usually from days (effusive pulses) tens (more prolonged phases). Considering high frequency occurrence these...
The integration of Artificial Intelligence, particularly foundation models and modern Transformer-based architectures, opens up new frontiers for seismic monitoring. In this work, we propose a comprehensive AI-driven framework detection phase picking events. These are designed to exploit the capabilities advanced AI techniques tackle challenges posed by high-frequency, high-density data, noisy environments typically associated with monitoring technologies like Distributed Acoustic Sensing...
Ocean generated low-frequency seismic noise signals called microseisms are linked to the ocean environment, subsurface and atmosphere. The energy associated with is closely related wave amplitude, globally throughout seasons, shows great potential in analysis of climate variability.To comprehend generation propagation mechanisms secondary offshore Sicily, a detailed Distributed Acoustic Sensing (DAS) data being conducted on MEOC fibre optic cable INFN-LNS submarine infrastructure Catania....
Etna volcano (Italy) is one of the most active volcanoes in world with a great variety events leading to effusive and/or explosive eruptions. The eruptive are usually preceded and accompanied by ground deformation, that often so tiny only high-precision borehole strainmeters capable capture. So far, analysis more than 10 years records from strainmeter network has shown importance continuous strain monitoring both for surveillance purposes research advancements. Despite their valuable...
Understanding volcanic processes is fundamental for anticipating impacts of eruptive activity on human activities and environment. Deformation seismicity often precede accompany eruptions. Models magma emplacement ground deformation associated with eruptions are obtained from GNSS InSAR observations seismic source mechanisms observations. While satellite sensing techniques benefit a large spatial coverage but coarse temporal resolution accuracy (mm range), seismometer networks acquire dense...
In recent years, Etna's primary eruptive activity has been marked by extended sequences of lava fountain episodes. Lava fountains are explosive events involving intense jets gas and solid particles, which significantly impact air traffic urban areas due to ash dispersal fallout. The development a at Etna typically follows gradual progression: it begins with weak Strombolian activity, transitions characteristic jet, culminates in the formation sustained column. These generally last from...
Ground response (GR) refers to the amplification and damping of seismic wavefield components under linear nonlinear elastic conditions. While waves are primary triggers GR, other dynamic phenomena, such as explosions strong acoustic waves, can also induce GR once they couple into ground. In volcanic environments, natural frequently interact with unconsolidated near-surface materials, making a critical factor in assessing hazards.To investigate contexts, we selected Mt. Etna study site due...
During the onset of 2008 volcanic crisis at Mt Etna, near‐real time magnetic data provided a continuous updating volcano activity state on northern flank. On morning 13 th May 2008, significant local field changes marked resumption eruptive characterized by opening fracture flank, and an fissure in Valle del Bove. In agreement with northward propagation seismic events, signals 5 stations summit area revealed nearly NNW‐SSE oriented magmatic intrusion, which started about 9:00 GMT, propagated...