A5022387081- earthquake and tectonic studies
- Particle Dynamics in Fluid Flows
- Wind and Air Flow Studies
- Earthquake Detection and Analysis
- Meteorological Phenomena and Simulations
- Fluid Dynamics and Turbulent Flows
- Landslides and related hazards
- Geological and Geochemical Analysis
- Ionosphere and magnetosphere dynamics
- Aeolian processes and effects
- Seismology and Earthquake Studies
- Geological formations and processes
- Geochemistry and Geologic Mapping
- Computational Fluid Dynamics and Aerodynamics
- CO2 Sequestration and Geologic Interactions
- Atmospheric aerosols and clouds
- Geology and Paleoclimatology Research
- Atmospheric and Environmental Gas Dynamics
- Rock Mechanics and Modeling
- Geophysics and Gravity Measurements
- Geomagnetism and Paleomagnetism Studies
- Photonic and Optical Devices
- Combustion and Detonation Processes
- Planetary Science and Exploration
- Fluid Dynamics Simulations and Interactions
Istituto Nazionale di Geofisica e Vulcanologia
2016-2025
INGV Sezione di Pisa
2020-2025
Scuola Normale Superiore
2014-2016
University of Pisa
2016
Abstract. A new fluid-dynamic model is developed to numerically simulate the non-equilibrium dynamics of polydisperse gas–particle mixtures forming volcanic plumes. Starting from three-dimensional N-phase Eulerian transport equations for a mixture gases and solid dispersed particles, we adopt an asymptotic expansion strategy derive compressible version first-order model, valid low-concentration regimes (particle volume fraction less than 10−3) particle Stokes number (St – i.e., ratio between...
Abstract The gravitational collapse of eruption columns generates ground-hugging pyroclastic density currents (PDCs) with highly variable temperatures, high enough to be a threat for communities surrounding volcanoes. reasons such great temperature variability are debated in terms eruptive versus transport and emplacement processes. Here, using three-dimensional multiphase model, we show that the initial PDCs linearly correlates percentage collapsing mass, maximum decrease 45% case low...
A full review of the 79 CE Plinian eruption Vesuvius is presented through a multidisciplinary approach, exploiting integration historical, stratigraphic, sedimentological, petrological, geophysical, paleoclimatic, and modelling studies dedicated to this famous devastating natural event. All have critically been reviewed integrated with original data, spanning from proximal ultradistal findings products throughout Mediterranean. The work not only combines different investigation approaches...
The EU Center of Excellence for Exascale in Solid Earth (ChEESE) develops exascale transition capabilities the domain Earth, an area geophysics rich computational challenges embracing different approaches to (capability, capacity, and urgent computing). first implementation phase project (ChEESE-1P; 2018–2022) addressed scientific technical seismology, tsunami science, volcanology, magnetohydrodynamics, order understand phenomena, anticipate impact natural disasters, contribute risk...
Abstract In this study, we combine reconstructions of volcanological data sets and inputs from a structured expert judgment to produce first long‐term probability map for vent opening location the next Plinian or sub‐Plinian eruption Somma‐Vesuvio. past, volcano has exhibited significant spatial variability in location; can exert control on where hazards materialize (particularly pyroclastic density currents). The new mapping been performed through (i) development maps with Gaussian kernel...
We present a benchmark study aimed at identifying the most effective modeling approach for tsunami generation, propagation, and hazard in an active volcanic context, such as island of Stromboli (Italy). take reference scenario 2002 landslide-generated event simulated to assess relative sensitivity numerical predictions landslide wave models, with our analysis limited submarine case. Two codes, different levels approximation, have been compared this study: NHWAVE three-dimensional...
Abstract Destructive tsunamis are most often generated by large earthquakes occurring at subduction interfaces, but also other “atypical” sources—defined as crustal and non-seismic sources altogether—may cause significant tsunami threats. Tsunamis may indeed be different sources, such earthquakes, submarine or coastal landslides, volcano-related phenomena, atmospheric perturbations. The consideration of atypical is important worldwide, it especially prominent in complex tectonic settings the...
Abstract Pyroclastic surges are lethal hazards from volcanoes that exhibit enormous destructiveness through dynamic pressures of 10 0 –10 2 kPa inside flows capable obliterating reinforced buildings. However, to date, there no measurements these currents quantify the dynamics this important hazard process. Here we show, large-scale experiments and first field measurement pressure pyroclastic surges, energy is mostly carried by coherent turbulent structures gravity waves. These perpetuate as...
<title>Abstract</title> Volcanic-induced tsunamis have a potentially devastating impact, especially in densely populated and/or touristic coastal areas. Kolumbo submarine volcano (Greece) experienced 1650 CE an explosive eruption with eyewitnesses’ accounts of major along the coasts Santorini (Thera) and other islands. We present scenario-based tsunami hazard assessment at this based on existing simulations from literature new triggered by less investigated but important mechanism, i.e....
This study focuses on the adaptation and enhancement of Non-hydrostatic Multilayer version Tsunami-HySEA code to better model tsunamis triggered by granular flows. The aim is optimize for operational hazard assessment, particularly Stromboli Island, meet integration requirements early warning systems events occurring along Sciara del Fuoco scarp.&#160;Significant improvements have been achieved, including a 50% reduction in computational time compared previous version. A prototype...
Mass movements at Stromboli volcano (Aeolian islands, Italy) have the capability of generating tsunamis, potentially affecting not only island shores, but whole Aeolian archipelago and Southern Tyrrhenian sea. Such mass can be associated with subaerial subaqueous slope instabilities Sciara del Fuoco, pyroclastic avalanches generated by explosive activity. In this work, we present a wide set volcanic movement scenarios subsequent tsunami generation, propagation inundation on shores. Scenarios...
Thanks to the computational power of modern cluster machines, numerical simulations can provide, with an unprecedented level details, new insights into fluid mechanics. However, taking full advantage this hardware remains challenging since data communication a significant bottleneck reaching peak performances. Reducing floating point precision is simple and effective way reduce movement improve speed most applications. Nevertheless, special care needs be taken ensure quality convergence...
OpenFOAM is a CFD software widely used in both industry and academia. The exaFOAM project aims at enhancing the HPC scalability of OpenFOAM, while identifying its current bottlenecks proposing ways to overcome them. For assessment components code profiling during development, lightweight but significant benchmarks should be used. answer was develop microbenchmarks, with small memory footprint short runtime. name microbenchmark does not mean that they have been prepared smallest possible test...
Abstract Explosive volcanic eruptions are one of the most important driver climate variability. Yet, we still lack a fundamental understanding how change may affect future eruptions. Here, use an ensemble simulations by 1‐D and 3‐D plume models spanning large range eruption source atmospheric conditions to assess changes in dynamics eruptive columns. Our results shed new light on differences between predictions models. Furthermore, both suggest that as result ongoing change, for tropical...
Understanding the generation of tsunamis from landslides at volcanic islands is crucial due to their infrequent, yet potentially catastrophic, impact on coastal communities. We present a sensitivity analysis effects different rheological and geometrical landslide parameters propagation in near field. In particular, we employed MultiLayer-HySEA model simulate generated by occurring along northwestern flank Stromboli volcano, specifically area known as Sciara del Fuoco, which considered most...