A5001728655- Earthquake Detection and Analysis
- Geomagnetism and Paleomagnetism Studies
- earthquake and tectonic studies
- Seismic Waves and Analysis
- Geological and Geochemical Analysis
- Seismology and Earthquake Studies
- Geophysics and Gravity Measurements
- Geophysical and Geoelectrical Methods
- CO2 Sequestration and Geologic Interactions
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- Geophysics and Sensor Technology
- High-pressure geophysics and materials
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Methane Hydrates and Related Phenomena
- Structural Health Monitoring Techniques
- Seismic Imaging and Inversion Techniques
- Planetary Science and Exploration
- Maritime and Coastal Archaeology
- Geological and Geophysical Studies
- Computational Physics and Python Applications
- Geophysical Methods and Applications
- Neural Networks and Applications
- Advancements in Materials Engineering
- Advanced Fiber Optic Sensors
Istituto Nazionale di Geofisica e Vulcanologia
2010-2023
INGV Osservatorio Etneo
2010-2022
Osservatorio Astrofisico di Catania
2022
Radiotelevisione Italiana (Italy)
2020
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2011
University of Calabria
2000-2002
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...
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...
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...
Long-term and high temporal resolution gravity deformation data move us toward a better understanding of the behavior Mt Etna during June 1995 – December 2011 period in which volcano exhibited magma charging phases, flank eruptions summit crater activity. Monthly repeated measurements were coupled with time series using Differential Synthetic Aperture Radar Interferometry (DInSAR) technique on two sequences interferograms from ERS/ENVISAT COSMO-SkyMed satellites. Combining spatiotemporal...
Thermal and pore-pressure variations induced by the circulation of hydrothermal-magmatic fluids in porous permeable media contribute to ground deformation volcanic areas. Here, we use solutions for calculation displacements temperature changes simplified geometry sources embedded an elastic half-space with homogeneous mechanical properties. The analytical solution a spherical source is reviewed, semi-analytical approach displacement cylindrical presented. Both models were used inversion...
A 14‐year‐long microgravity data set (October 1994 to September 2007) collected along a 24‐km east‐west trending profile of 19 stations was analyzed detect underground mass redistributions related the volcanic activity involving southern flank Mt Etna (Italy). multiresolution wavelet analysis applied separate volcano‐related anomalies from unwanted components. The residual image having both spatial extension and temporal duration evidenced two complete gravity increase/decrease cycles mainly...
Accurate detection of time gravity changes attributable to the dynamics volcanoes requires high-precision measurements. With aim improving quality data from Mount Etna network, we used both absolute and relative gravimeters in a hybrid method. In this report, some techniques for surveys are reviewed, results related each method compared. We show how total uncertainty estimated measurements performed with combined use is roughly comparable that calculated when acquired using only (the...
3-D magneto-elastic models based on finite element method (FEM) have been developed to compute piezomagnetic fields caused by magmatic overpressure sources. We solved separately (i) the elastostatic equation for stress field and (ii) coupled Poisson's magnetic potential field. The numerical computations were focused a more realistic modelling of Etna volcano, where remarkable changes observed during eruptive events. evaluated effects topography medium heterogeneities considering different...
A ground magnetic study was performed on the northern upper flank of Mt. Etna to provide new insights into subsurface volcano-tectonic structures. The high resolution survey focused main structures Piano delle Concazze, a large flat area dominated by North- East crater and bounded rim Valle del Leone depression extremity Rift. More than 2,500 measurements were gathered with sampling step about 3 m covering an 0.2 km2. total-intensity anomaly field shows presence intense South- North aligned...
Abstract Volcano-hydrothermal systems are governed by complex interactions between fluid transport, and geochemical mechanical processes. Evidence of this close interplay has been testified distinct spatial temporal correlations in geophysical observations at Vulcano Island (Italy). To understand the interaction circulation manifestations, we perform a parametric study to explore different scenarios implementing hydro-geophysical model based on equations for heat mass transfer porous medium...
Motivated by ongoing efforts to understand the nature and energy potential of geothermal resources, we devise a coupled numerical model (hydrological, thermal, mechanical), which may help in characterization monitoring hydrothermal systems through computational experiments. Hydrothermal areas volcanic regions arise from unique combination geological hydrological features regulate movement fluids vicinity magmatic sources capable generating large quantities steam hot water. Numerical...
Gravity time sequences collected at Etna volcano by continuously recording spring-based relative gravimeters showed significant variations in temporal correspondence with paroxysmal eruptions. Since the observed gravity can only be partially related to subsurface mass redistribution phenomena, we investigated instrumental effects due ground vibrations such as those that accompany explosive activity. We simulated performances of laboratory experiments estimate their response vertical and...
Potential CO2 leakage from deep geologic reservoirs requires evaluation on a site-specific basis to assess risk and arrange mitigation strategies. In this study, heterogeneous realistic numerical model was developed investigate migration pathways uprising time in shaly overburden, located the Malaysian off-shore. Fluid flow reactive transport simulations were performed by TOUGHREACT evaluate the: (1) seepage through caprock; (2) CO2-rich brine fault connecting reservoir with seabed. The...