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  • 1
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    La formazione del Personale delle Sale Operative INGV (2021)
    Istituto Nazionale di Geofisica e Vulcanologia
    Details
    Publication Date: 2021-01-20
    Description: La continua attività di formazione del personale a tempo indeterminato e determinato coinvolto nelle attività di sorveglianza H24 all’Osservatorio Etneo (OE), all’Osservatorio Nazionale Terremoti (ONT) e all’Osservatorio Vesuviano (OV), costituisce uno degli obiettivi istituzionali dell’Ente. Per questa ragione, le attività formative previste devono essere necessariamente coerenti sia con gli obiettivi istituzionali rappresentati dal Piano Triennale delle Attività, sia con le finalità concordate nell’Accordo Quadro con il Dipartimento della Protezione Civile (DPC). L’attività formativa nell’ambito dei servizi di sorveglianza riveste, dunque, una specifica rilevanza strategica in continua evoluzione, anche alla luce dell’aggiornamento delle procedure e dello sviluppo tecnologico in atto nelle Sale Operative dell’OE, dell’ONT e dell’OV. Nell’ambito del progetto “S.O.I.R. monitoraggio futuro”, sono stati progettati e realizzati dei corsi di formazione e aggiornamento per il personale operante nelle tre Sale Operative con l’obiettivo principale di i) consolidare il livello delle conoscenze di base; ii) migliorare l’interazione tra le Sale; iii) standardizzare e ottimizzare le procedure e iv) approfondire la conoscenza dei nuovi parametri che, nell’ambito del presente progetto, saranno introdotti nelle Sale Operative (geomagnetici, ionosferici, da osservatori sottomarini, geochimici, ecc.).
    Description: Published
    Description: 145-149
    Description: 1TM. Formazione
    Description: N/A or not JCR
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    The location of the Earth's magnetic poles from circum‐terrestrial observations (2021)
    Wiley Agu
    Details
    Publication Date: 2021-02-23
    Description: The magnetic poles or dip poles are the points on the Earth's surface and circum‐terrestrial area where the magnetic field is vertical, so the horizontal component vanishes. They are not coincident with geomagnetic poles, which are the points where the dipole axis, obtained by analytic models, intersects the Earth's surface, and their instrumental sampling determination from ad hoc ground surveys is difficult due to the harsh environmental conditions and remoteness of the areas where they are located. In this work, we use magnetic field measurements from ESA's Swarm satellites covering 5 years (2015‐2019), and determine the position of the magnetic poles by modelling the yearly average horizontal magnetic field component through analytic 2D Taylor polynomial fit and finding the locations where this component is minimum. The yearly dip poles positions at average satellites geocentric altitudes are also projected at ground level based on WGS84 geodetic reference system. Reliability of our method is evaluated by an optimized Monte Carlo test applied to combined IGRF model and Swarm data. The availability of several years of data allows us to investigate the long term variation and dynamics of the magnetic poles, also in comparison with the results provided by IGRF model (both IGRF12 and IGRF13). Our results agree with the model, in better accordance in the north hemisphere with IGRF13, indicating that both magnetic poles move in the north‐west direction, with a speed of ∼37‐72 km/y (lower in year 2016) for the north dip pole and of ∼5‐9 km/y for the south one.
    Description: Published
    Description: e2020JA028513
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Description: JCR Journal
    Keywords: Magnetic poles location ; Swarm satellites ; Magnetic poles drift ; Magnetic anomalies ; Antarctic and Arctic polar regions ; Monte Carlo test ; 04.05. Geomagnetism ; 05.01. Computational geophysics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    “A view from geomagnetic observation points along the 80°S parallel in Antarctica” (2020)
    Details
    Publication Date: 2020-10-02
    Description: Contributions to the knowledge of the Earth’s magnetism from polar regions is extremely important to understand themagnetospheric dynamics because local field lines reach extreme magnetospheric regions where the interactions with the solar wind occurs.The Earth’s magnetic field shows temporal variations which go from seconds to hundreds of thousands of years.We study low frequency fluctuations(approximately in the Pc5 range, ~1-7 mHz). INGV has a consolidatedexperience inAntarctic research activitiesand in management of permanent geomagnetic observatories as Mario Zucchelli (MZS, at Terra Nova Bay)and Concordia (DMC, at DomeC) stations, as well as temporary installations as Talos Dome (TLD),installed during 2007-2008 Antarctic campaign and working for a few months.The availability of simultaneous measurements from MZS, TLD andSBA (Scott Base), allows to make an interesting comparison in that the three stations are located approximately at the same geomagnetic latitude (~ 80°S), with approximately 2 hours total displacement in magnetic local time. This location is particularly useful to study the signal propagation in the azimuthal direction.We review the results obtained so far from the analysis of diurnal variation, coherence, power and propagation direction of Pc5 pulsations observed along the 80°S geomagnetic parallel, underlying the importance of such observational point, in anticipation of the future installation of a new geomagnetic station at TLD.
    Description: Published
    Description: Davos
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Keywords: geomagnetism
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 4
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    On the validation of K index values at Italian geomagnetic observatories (2020)
    EGU - Copernicus
    Details
    Publication Date: 2020-09-07
    Description: Local K index and the consequent global Kp index are well established three-hour range indices used to characterize the geomagnetic activity. K index is one of the parameters which INTERMAGNET observatories can provide and it’s widely used since several decades, although many other activity indices have been proposed in the meanwhile. The method for determining the K values has to be the same for all observatories. INTERMAGNET consortium recommends the use of one of the 4 methods endorsed by the International Service of Geomagnetic Indices ( ISGI) in close cooperation and agreement with the ad-hoc working group of International Association of Geomagnetism and Aeronomy (IAGA). INTERMAGNET provides the software code KASM, designed for an automatic calculation of K index according to the Adaptive Smoothed method. K values should be independent on the local dynamic response, therefore for their determination each observatory has its own specific scale regulated by the L9 lower limit, which represents the main input parameter for KASM. The determination of an appropriate L9 value for any geomagnetic observatory is then fundamental. In this work we statistically analyze the K values estimated by means of KASM code for the Italian geomagnetic observatories of Duronia (corrected geomagnetic latitude λ~36° N) and Lampedusa (λ~28° N) comparing them with the German observatories of Wingst and Niemegk. Our comparative analysis is finalized to establish the best estimation of the L9 lower limit for these two stations. A comparison of L9 lower limits found for the Italian observatories with results from a previous empirical method was also applied and used to verify the consistency and reliability of our outcomes.
    Description: Published
    Description: 105–115
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Description: JCR Journal
    Keywords: 04.05. Geomagnetism
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
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    Preliminary results from the first geomagnetic deep sounding in the Western sector of the Anti Atlas region, Southern Morocco (2010)
    Details
    Publication Date: 2017-04-04
    Description: An array of vector magnetometers was temporarily installed in the Western sector of the Anti Atlas chain, Morocco in the frame of the Geomagnetic Depth Sounding (GDS) technique. As a fruitful collaboration between Italy and Morocco, the joint project “Terremagnet”, funded by the Italian Ministry of the Foreign Affair, was aimed to local observations of the Earth’s magnetic field in order to define electric conductivity horizontal and vertical contrasts in a tectonic active region. The analysis in time and frequency-domain for tests on the induced EM field dimension, computations of single site and coupled site Transfer Functions (TFs) and induction vectors configuration are shown. Recorded data are compared to Averroes geomagnetic observatory (Morocco) (IAGA code: AVE, lat. 33° 17’ 53” N, long. 7° 24’ 48” W, altitude: 230 m a.s.l.). The preliminary results from Morocco are really encouraging and pointed out good data samplings that will allow shedding up light on the tectonic setting of this peculiar region of the Anti-Atlas.
    Description: Published
    Description: Hosted by the U.S. Geological Survey’s (USGS) Geomagnetism Program, the workshop’s measurement session was held at the Boulder Observatory and the scientific session was held on the campus of the Colorado School of Mines in Golden, Colorado
    Description: 1.6. Osservazioni di geomagnetismo
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: 3.4. Geomagnetismo
    Description: open
    Keywords: Absolute measurements ; Magnetic Anomalies ; GDS ; Morocco ; 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 6
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    Ionosphere Monitoring in South East Asia in the ERICA Study (2018)
    Details
    Publication Date: 2019-12-18
    Description: The ERICA study aims to find out signatures of the interplay between the magnetosphere‐geomagnetic field and the ionosphere that degrade trans‐ionospheric signals such as those transmitted by GNSS satellites. The project activity focuses on the characterization of the ionospheric variability of the Equatorial Ionospheric Anomaly in the South East Asian region through the analysis of datasets collected with an ad hoc measurements campaign. The campaign has been conducted with ground‐based instruments located in the footprints of the Equatorial Ionospheric Anomaly and Equatorial Ionospheric Trough. This paper presents some of the relevant results achieved by the project, in terms of ionospheric climatology and weather assessment over the interested area. In particular, the paper describes the average condition of the Equatorial Ionospheric Anomaly recorded during the entire campaign and provides interesting insights on relevant scintillation events.
    Description: Published
    Description: 273-287
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Description: 2A. Fisica dell'alta atmosfera
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
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    InSEA Project: Initiatives in Supporting the consolidation and enhancement of the EMSO infrastructure and related Activities (2020)
    Details
    Publication Date: 2020-04-06
    Description: The observation of the phenomena occurring on our planet was in the past based mainly on ground monitoring with both temporal and spatial approaches. On the other hand, in the part covered by the oceans until a few years ago the monitoring was carried out through discrete measurement campaigns in time and space with the disadvantage of not having information on the variability of oceanic processes. Only more recently, since the 90s of the last century, technology has allowed the installation of multidisciplinary systems on the seabed for long periods (years), even at great depths (thousands of meters). From the circumscribed campaigns in space and time, we have therefore moved on to the installation of observatories on the seabed, to record in a continuous way the physical and chemical parameters, in order to know the state of the oceans and of the whole planet. This produces two advantages: A spatial improvement of the observations, because they extend from land to the 1. previously less known and more extensive part of the planet, i.e. the oceans that cover seventenths of the Earth’s surface; A scientific improvement, because the oceans represent a fundamental element in the 2. processes at the base of the Earth’s climate, whose knowledge on large time scales makes it possible to understand the future evolution of these processes [e.g. Favali et al., 2015].
    Description: Published
    Description: Rome
    Description: 6IT. Osservatori non satellitari
    Keywords: Marine Infrastructure ; Seafloor Observatory ; Ocean Bottom Seismometer ; Multidisciplinary Seafloor Observation Station ; 05.04. Instrumentation and techniques of general interest
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 8
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    Space observations to determine the location of locally vertical geomagnetic field (2019)
    Cambridge University Press
    Details
    Publication Date: 2019-01-28
    Description: The points where the horizontal component of the geomagnetic field vanishes are located in polar areas, far away from the geomagnetic (analytic) poles and the poles of rotation of the Earth and, differently from the geomagnetic poles, can be found experimentally with a magnetic survey to determine where the field is vertical. The experimental determination of the area where the total field is perfectly vertical, commonly known as dip pole, is not simple, due to the remoteness and harsh climatic conditions; another difficulty is related to the short term geomagnetic field variations, due to the interaction with the external solar wind, which causes the magnetospheric dynamics, particularly evident at high latitude, and as a consequence a displacement of the dip pole. Actually, the study of the dip pole displacements over short time scales can be an important tool for monitoring the magnetospheric dynamics at high latitude. In this study we present the updated location of the the dip poles, using data from the Swarm ESA’s constellation of satellites along their almost polar orbits. We also analyse the spatial shift of these areas during different seasons and interplanetary magnetic field orientations.
    Description: Published
    Description: 135-138
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Description: N/A or not JCR
    Keywords: 01.03. Magnetosphere
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 9
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    Yearbook magnetic results 2018 Geomagnetic observatory of Castello Tesino (2019)
    Details
    Publication Date: 2019-06-14
    Description: Istituto Nazionale di Geofisica e Vulcanologia
    Description: Published
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Keywords: Earth's magnetic field Magnetic observatories
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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  • 10
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    Il nuovo manuale degli osservatori geomagnetici (2018)
    Details
    Publication Date: 2018-03-02
    Description: Il nostro pianeta è sede di un campo magnetico generato principalmente da correnti elettriche di origine interna alla Terra, che fluiscono nel nucleo esterno fluido, a cui si sovrappone un contributo dovuto a correnti elettriche presenti nella ionosfera e nella magnetosfera. Oggi sono sempre più numerosi i siti permanenti di misura del campo magnetico terrestre, sia per il crescente interesse in questo settore scientifico, che apporta importanti e autonomi contributi alle altre discipline della geofisica, che per la maggiore disponibilità di strumentazione, tecnologicamente migliorata e miniaturizzata a costi ridotti. I geomagnetisti hanno un interesse particolare allo studio del campo magnetico terrestre poiché nella magnetosfera si innescano una serie di fenomeni ancora poco noti e per questo particolarmente attraenti. Sulla scia di questo interesse sono stati installati molti punti di osservazione, gli osservatori geomagnetici, dove effettuare misure di campo magnetico con continuità e per lunghi intervalli temporali. Anche l’Italia rientra in questa tradizione. Già nel 1958, con il Prof. Franco Molina, veniva installato il primo osservatorio geomagnetico moderno su suolo italiano, a Preturo, a pochi km da L’Aquila. Oggi l’Istituto Nazionale di Geofisica e Vulcanologia gestisce 3 osservatori sulla penisola e 2 in Antartide. La storia dell’evoluzione di questi siti di osservazione è lunga e ricca di aneddoti e fatti interessanti. In questo manuale gli autori vogliono fare il punto della situazione su quello che gli osservatori geomagnetici sono oggi (settembre 2016) in Italia. Vengono descritti brevemente gli osservatori, la strumentazione ivi installata e alcune accortezze messe a punto negli anni per gestire al meglio la strumentazione. Questo manuale non può certamente essere esaustivo, né tantomeno pretende di ricostruire interamente la storia dei nostri osservatori, che pure sarebbe interessante. Si vuole lasciare una traccia dello stato dell’arte riassumendo in particolare il percorso seguito in questi ultimi due anni di lavoro, dando così uno strumento a chi lavora e lavorerà presso gli osservatori gestiti dall’INGV. Gli autori ci tengono a sottolineare che il lavoro svolto presso gli osservatori è portato avanti da un gruppo di persone costituito da personale ricercatore, tecnologo e tecnico. Il contributo di tutti è stato ed è fondamentale per la realizzazione e la manutenzione di tutto quello che oggi abbiamo a disposizione.
    Description: ingv
    Description: Published
    Description: 5IT. Osservatori
    Keywords: osservatori geomagnetici, geomagnetismo ; osservatori geomagnetici
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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