Options
Benedetti, Giovanni
Loading...
Preferred name
Benedetti, Giovanni
Email
giovanni.benedetti@ingv.it
Staff
staff
ORCID
7 results
Now showing 1 - 7 of 7
- PublicationOpen AccessA New Installation for Geomagnetic Field Monitoring at Talos Dome, a Remote Antarctic Site Away from Permanent Observatories(MDPI, 2023)
; ; ; ; ; ; ; ; ; An automatic geomagnetic station for monitoring the Earth’s magnetic field variations was installed in December 2020 at Talos Dome, a remote site on the Antarctic Plateau, about 300 km away from the permanent geomagnetic observatory at Mario Zucchelli Station (MZS). Designed and assembled at the laboratory of electronics of the Istituto Nazionale di Geofisica e Vulcanologia (INGV) in Rome, this autonomous station is formed by a vector magnetometer specifically manufactured by Lviv Institute (Ukraine) for very low temperatures and a low-power system supplied by batteries charged by a wind generator and solar panel. Data, sampled at 1 Hz, are locally stored and can be downloaded once a year during the Antarctic summer expeditions. The goal was to integrate observatory data for better monitoring the geomagnetic field from an uncovered Antarctic area. In fact, it is well known that the distribution of geomagnetic observatories strongly favors the northern hemisphere, and each new instrumental installation in Antarctica should be considered as a useful attempt to balance the geomagnetic monitoring in the two hemispheres. The achieved goal was to obtain a long data series, keeping the station working even during the austral winter when the temperature can reach −60 ◦C; we recorded almost 11 months of data in one year and the station is still operating. Data from the new station, jointly with data from permanent observatories, improve the analysis of the magnetospheric dynamics and the ionosphere–magnetosphere coupling. Talos Dome, together with the Italian geomagnetic observatory at Mario Zucchelli Station and New Zealand geomagnetic observatory at Scott Base, constitutes a network along the 80◦S geomagnetic parallel, which is interesting for studying the longitudinal propagation of geomagnetic signals of external origin. In this work we present the characteristics of the station and of the data it provides, with the aim of them for analysis in the framework of space weather.99 13 - PublicationOpen AccessGeomagnetic Observation Result, 2014-2015(2017)
; ; ; ; ; ; ; ; ; This report deals with activities undertaken at the Antarctic Italian Geomagnetic Observatory during the austral summer 2014-2015. The coordinates of the Observatory at OASI are the following: Geographic latitude: 74.6936S Geographic longitude: 164.0975E Corrected Geomagnetic latitude (IGRF12): 79.85S Corrected Geomagnetic longitude (IGRF12): 306.57E Magnetic local time midnight: 08:18 UT This report describes the activities performed from October 30, 2014 to November 19, 2014. For the present work H, D and Z INTERMAGNET formatted data from the fluxgate magnetometer EDA have been used. The proton precession magnetometers used to record F total values were Overhauser type; for a description of instruments we refer to geomagnetism text books, for example Parkinson (1983) and Wienert (1970). Since the total intensity F time variations, at polar latitudes, where values of inclination is almost 90, are very close to the vertical component Z time variations, the plots of total intensity time variations are not shown. They can however be obtained from the well known equation:66 27 - PublicationOpen AccessGeomagnetic Activity at Lampedusa Island: Characterization and Comparison with the Other Italian Observatories, Also in Response to Space Weather Events(2021-08-06)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Regular automatic recordings of the time series of the magnetic field, together with routine manual absolute measurements for establishing dynamic baselines at Lampedusa Island—south of Sicily—Italy (geographic coordinates 35°31′N; 12°32′E, altitude 33 m a.s.l.), show a signature of very low electromagnetic noise. The observatory (provisional IAGA code: LMP) lays inside a restricted and remote wildlife reserve, far away from the built-up and active areas of the island, which at present is the southernmost location of the European territory for such observations. The availability of high-quality data from such site, whose survey started in 2005, is valuable for filling the spatial gap due to the lack of observatories in the whole south Mediterranean and North African sectors. We compare observations at Lampedusa, in both time and frequency domains, with those at the other Italian observatories (Castello Tesino and Duronia-L’Aquila), operating since the 1960s of last century, allowing us to report even the secular variation. Using data recorded in the last few years, we investigate higher frequency variations (from diurnal to Pc3-4 pulsations) in order to magnetically characterize the Italian territory and the local response to external forcing. In particular, we present a characterization in terms of diurnal variation and its seasonal dependence for the three observatories. This latter feature is in good agreement with a geomagnetic Sq-model, leading us to speculate about the position of the north Sq-current system vortex and its seasonal displacement with respect to the geographic positions of the observatories. We also study the geomagnetic individual response to intense space weather events by performing Superposed Epoch Analysis (SEA), with an ad-hoc significance test. Magnetic responses in the Ultra Low Frequency range (ULF) from spectral, local Signal-to-Noise Ratio (SNR) analyses under different local time, and polarization rates are computed. These latter studies lead us to search for possible signatures of magnetic field line resonances during intense space weather events, using cross-phase multi-observatory analysis, revealing the promising detection capability of such technique even at low latitudes. The geomagnetic observatories prove to be important points of observation for space weather events occurring at different spatial and time scales, originating in both upstream and ionospheric regions, here analyzed by several well-established methodologies and techniques. The quiet environmental site of LMP, providing high-quality geomagnetic data, allows us such investigations even at inner Earth’s magnetospheric shell.397 20 - PublicationOpen AccessGeomagnetic Observation Result, 2018-2019(2021)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; This report deals with activities undertaken at the Antarctic Italian Geomagnetic Observatory at Stazione Mario Zucchelli during the austral summer 2018-2019.51 30 - PublicationOpen AccessGeomagnetic observation result, 2012-2013(2015)
; ; ; ; ; ; ; ;Benedetti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Cafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Dominici, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Lepidi, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Pietrolungo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Santarelli, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Zirizzotti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia; ; ; ; ; ; 339 185 - PublicationOpen AccessGeomagnetic observation result(2015)
; ; ; ; ; ; ; ;Benedetti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Cafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Dominici, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Lepidi, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Pietrolungo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Zirizzotti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Santarelli, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia; ; ; ; ; ; 226 108 - PublicationRestrictedUn nuovo sistema di alimentazione per l'Osservatorio Geomagnetico di Lampedusa(2011)
; ; ; ;Fois, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Biasini, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Benedetti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia; ; Scopo di questa monografia è quello di fornire una descrizione delle attività svolte per realizzare e perfezionare la funzionalità dell’osservatorio geomagnetico di Lampedusa. A tal fine saranno descritte brevemente le finalità scientifiche di questo osservatorio geomagnetico remoto, le modifiche e le migliorie apportate alla strumentazione dell’osservatorio per risolvere gli iniziali problemi di funzionamento del sistema di misura. Tali modifiche e migliorie hanno riguardato: il software di gestione del sistema di acquisizione, che controlla gli strumenti di misura del campo magnetico; il regolatore di tensione per pannelli solari che fornisce energia a tutti gli apparati. Il modello commerciale di regolatore è stato sostituito da un prototipo progettato e realizzato nei laboratori INGV, che pur meno sofisticato dei tanti modelli in commercio, garantisce il buon funzionamento dei magnetometri scalari ad effetto Overhauser (prodotti dalla GEM System) e quindi la corretta misura assoluta dell’intensità totale del campo magnetico terrestre.181 34