A5012433558- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- Earthquake Detection and Analysis
- Solar and Space Plasma Dynamics
- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Seismic Waves and Analysis
- earthquake and tectonic studies
- Geophysical Methods and Applications
- Astro and Planetary Science
- Seismic Imaging and Inversion Techniques
- Geophysical and Geoelectrical Methods
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Planetary Science and Exploration
- Spacecraft Design and Technology
- Distributed and Parallel Computing Systems
- Polar Research and Ecology
- Radar Systems and Signal Processing
- Geotechnical Engineering and Soil Stabilization
- Stellar, planetary, and galactic studies
- Seismology and Earthquake Studies
- Geotechnical Engineering and Underground Structures
- Advanced Data Storage Technologies
- Astronomical Observations and Instrumentation
Istituto Nazionale di Geofisica e Vulcanologia
2018-2024
Radiotelevisione Italiana (Italy)
2021
European Space Research Institute
2016
National Institute for Astrophysics
2005-2011
National Academies of Sciences, Engineering, and Medicine
2006
University of Siena
2005
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
2001
University of Pavia
2001
On 8 May 2024, the solar active region AR13664 started releasing a series of intense flares. Those class X released between 9 and 11 2024 gave rise to chain fast Coronal Mass Ejections (CMEs) that proved be geoeffective. The Storm Sudden Commencement (SSC) resulting geomagnetic storm was registered on 10 it is, date, strongest event since November 2003. storm, named hereafter Mother’s Day peaked with Dst –412 nT stands out as “standard candle” affecting modern era technologies prone Space...
Abstract. Swarm is the European Space Agency (ESA)'s first Earth observation constellation mission, which was launched in 2013 to study geomagnetic field and its temporal evolution. Two Langmuir probes aboard each of three satellites provide situ measurements plasma parameters, contribute ionospheric dynamics. To maintain a high data quality for scientific technical applications, products are continuously monitored validated via science-oriented diagnostics. This paper presents an overview...
Preliminary Swarm Langmuir probe measurements recorded during March 2015, a period of time including the St. Patrick storm, are considered. Specifically, six periods identified: two quiet before onset main phase and recovery storm. electron density values then compared with corresponding output given by International Reference Ionosphere (IRI) model, according to its three different options for modelling topside ionosphere. Since still undergoing thorough validation, comparison IRI in terms...
Abstract Geomagnetically induced currents (GICs), occurring as a result of space weather events, represent hazard for the secure and safe operation electrical power grids oil/gas pipelines. The most exposed countries are those at high latitudes where, in past, occurrence intense GICs has seriously damaged part their networks. However, very powerful events have resulted also middle low latitudes. G I C index is proxy geoelectric field, it can be estimated straightforwardly from magnetic...
This study focuses on the open question of electron temperature (Te) variation with solar activity in topside ionosphere at mid- and high latitudes. It takes advantage situ observations taken over a decade (2014–2023) from Langmuir probes board low-Earth-orbit Swarm B satellite spanning an altitude range 500–530 km. The also includes comparison Te values modeled using International Reference Ionosphere (IRI) model Millstone Hill (42.6° N. 71.5° W) incoherent scatter radar observations....
Abstract Electron density ( N e ) and electron temperature T observations collected by Langmuir Probes on board the European Space Agency (ESA) Swarm B satellite are used to characterize their correlation in topside ionosphere at an altitude of about 500 km. Spearman coefficient values R calculated joint probability distributions between for selected conditions. The large data set 2‐Hz rate, covering years 2014–2022, allowed investigating properties ionospheric plasma a global scale,...
Abstract The scaling features of electron density fluctuations during the St. Patrick's magnetic storm (17 March 2015) are analyzed to try characterize possible turbulent nature ionosphere development geomagnetic storm. values recorded by two three satellites Swarm constellation a period 7 days (16–22 around peak at middle‐ and high‐latitude regions in both hemispheres. analysis reveals interesting patterns properties explanation for occurrence high Rate change Of Density Index (RODI)....
Context. Turbulence dominated by large-amplitude, nonlinear Alfvén-like fluctuations mainly propagating away from the Sun is ubiquitous in high-speed solar wind streams. Recent studies have demontrated that slow streams may also show strong Alfvénic signatures, especially inner heliosphere. Aims. The present study focuses on characterisation of an interval observed Solar Orbiter between 14 and 18 July 2020 at a heliocentric distance 0.64 AU. Methods. Our analysis based plasma moments...
Abstract The present work focuses on the analysis of scaling features electron density fluctuations in mid- and high-latitude topside ionosphere under different conditions geomagnetic activity. aim is to understand whether it possible identify a proxy that may provide information properties physical mechanisms at their origin, as for instance, turbulence phenomena. So, we selected about 4 years (April 2014–February 2018) 1 Hz measurements recorded on-board ESA Swarm A satellite. Using...
The global statistical median behavior of the electron temperature (Te) in topside ionosphere was investigated through in-situ data collected by Langmuir Probes on-board European Space Agency Swarm satellites constellation from beginning 2014 to end 2020. This is first time that such an analysis, based on a large window, has been carried out globally, encompassing more than half solar cycle, activity peak minimum results show can help understanding main features Te way never achieved before....
Abstract Rapid increases in solar wind dynamic pressure, known as pressure pulses, compress the Earth's magnetosphere and can rapidly restructure electrodynamics within. The propagation of pulse effects into is a geomagnetic sudden commencement (SC). SCs be further subdivided compressions which are followed by storm (a commencement, SSC) those not impulse, SI). In this paper, SSCs SIs compared contrasted, we examine particular differences between pulses that drive SSCs/SIs, explore physical...
The China Seismo-Electromagnetic Satellite (CSES-01) provides in situ electron density (Ne) observations through Langmuir probes (LPs) the topside ionosphere since February 2018. CSES-01 is a sun-synchronous satellite probing around two fixed local times (LTs), 14 LT daytime sector and 02 night-time sector, at an altitude of about 500 km. Previous studies evidenced that seems to underestimate Ne measurements with respect those acquired by similar satellites or obtained from different...
This paper presents the project Comprehensive spAce wEather Studies for ASPIS prototype Realization (CAESAR), which aims to tackle relevant aspects of Space Weather (SWE) science and develop a scientific data centre Italian Agency (ASI) called (ASI SPace InfraStructure). To this end, CAESAR involves majority SWE community, bringing together 10 institutions as partners, total 92 researchers. The approach encompasses whole chain phenomena from Sun Earth up planetary environments in...
Abstract Recent findings on the nature of magnetic field fluctuations in high‐latitude ionospheric regions have suggested existence scaling features, which are signature occurrence turbulence. These features mainly characterize those where field‐aligned currents flow. Here, we investigate Earth's using high‐resolution (50 Hz) measurements from European Space Agency observation mission Swarm. Our study indicates that spatiotemporal anomalous low‐frequency at spatial scales range 0.8–80 km...
We examine the characteristics of a train ULF waves observed in magnetosphere and at ground after sudden impulse (SI) onset 8 June 2000. A highly monochromatic large‐amplitude wave f = 3.3 mHz was between 9:10 9:50 UT GOES8 orbit (on dawn flank magnetosphere) across wide longitudinal range stations from low to high latitudes. The combination long period these pulsations (5 min), their extended duration (∼40 latitude‐independent frequency, small azimuthal number suggests occurrence global...
Abstract We provide the first 3‐D resistivity image of Pian Grande di Castelluccio basin, main Quaternary depocenter in hangingwall Mt.Vettore–Mt. Bove normal fault system (VBFS), responsible for October 30, 2016 M w 6.5 Norcia earthquake (central Italy). The subsurface structure basin is poorly known, and its relation with VBFS remains debated. Using recent Fullwaver technology, we carried out a high‐resolution 2‐D transect crossing coseismic ruptures coupled an extensive survey aim of: (a)...
This paper discusses the occurrence of Global Positioning System (GPS) loss lock events obtained by considering total electron content (TEC) measurements carried out three satellites European Space Agency Swarm constellation from December 2013 to 2020, which represents longest dataset ever used perform such an analysis. After describing approach classify a GPS lock, corresponding is analyzed as function latitude, local time, season, and solar activity identify well-defined patterns....
In the framework of space weather, understanding physical mechanisms responsible for generation ionospheric irregularities is particularly relevant their effects on global positioning and communication systems. Ionospheric equatorial plasma bubbles are one possible irregularities. this work, using data from ESA Swarm mission, we investigate scaling features electron density fluctuations characterizing bubbles. Results strongly support a turbulence character these structures suggest existence...
Abstract Ionospheric irregularities may affect electromagnetic signals propagating through the ionosphere and consequently contribute to malfunctioning of Global Navigation Satellite Systems hindering their accuracy reliability. In this study, we use data recorded on board two three satellites Swarm constellation (namely, A B) from 15 July 2014 31 December 2021 assess possible dependence Positioning System (GPS) loss lock presence a specific kind ionospheric irregularities. To accomplish...
The storm onset on 7 September 2017, triggered several variations in the ionospheric electron density, causing severe phase fluctuations at polar latitudes both hemispheres. In addition, although quite rare high latitudes, clear amplitude scintillations were recorded by two Global Navigation Satellite System receivers during main of storm. This work attempted to investigate physical mechanisms triggering observed scintillations, with aim identifying conditions favoring such events. We...
We present observations of ionospheric convection in the Northern Hemisphere made by SuperDARN radar network during a 3 h period on December 2001. The interplanetary magnetic field (IMF) time is predominately northward with B y component changing from positive to slightly negative. During this Cluster skimming southern high latitude dusk magnetopause and reveals that reconnection going quasi‐continuously site being most tailward cusp always near satellite location (Retinò, et al., 2005)....
Major geomagnetic storms drive rapid intensification and variability of magnetospheric iono- spheric current systems that give rise to large ground-induced currents (GIC). Space weather as- sociated GIC pose a serious threat the reliability power-transmission other elec- trically conducting infrastructure such as oil gas pipelines. The most severe effects are ob- served at high latitudes due ionospheric associated with aurora. However, power transmission grid pipeline continues grow middle...
Abstract Our knowledge of the physical properties topside ionosphere is still incomplete. A key point not fully understood how field‐aligned currents are generated, evolve and dissipate in ionosphere. Answering to this question fundamental for a better understanding mechanisms regulating coupling between magnetosphere shed light on processes inherent space weather events occurring Earth's In framework relevant role played by ionospheric conductivity. The purpose study analyze main electrical...