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  • 1
    Publication Date: 2021-05-12
    Description: The Istituto Nazionale di Geofisica e Vulcanologia (INGV) is an Italian research institution with focus on earth sciences. Moreover, the INGV is the operational center for seismic surveillance and earthquake monitoring in Italy and is a part of the civil protection system as a center of expertise on seismic, volcanic, and tsunami risks.INGV operates the Italian National Seismic Network and other networks at national scale and is a primary node of the European Integrated Data Archive for archiving and distributing strong‐motion and weak‐motion seismic recordings. In the control room in Rome, INGV staff performs seismic surveillance and tsunami warning services; in Catania and Naples, the control rooms are devoted to volcanic surveillance. Volcano monitoring includes locating earthquakes in the regions around the Sicilian (Etna, Eolian Islands, and Pantelleria) and the Campanian (Vesuvius, Campi Fregrei, and Ischia) active volcanoes. The tsunami warning is based on earthquake location and magnitude (M) evaluation for moderate to large events in the Mediterranean region and also around the world. The technologists of the institute tuned the data acquisition system to accomplish, in near real time, automatic earthquake detection, hypocenter and magnitude determination, and evaluation of several seismological products (e.g., moment tensors and ShakeMaps). Database archiving of all parametric results is closely linked to the existing procedures of the INGV seismic surveillance environment and surveillance procedures. Earthquake information is routinely revised by the analysts of the Italian seismic bulletin. INGV provides earthquake information to the Department of Civil Protection (Dipartimento di Protezione Civile) to the scientific community and to the public through the web and social media. We aim at illustrating different aspects of earthquake monitoring at INGV: (1) network operations; (2) organizational structure and the hardware and software used; and (3) communication, including recent developments and planned improvements.
    Description: FISR SOIR DPC
    Description: Published
    Description: 1659–1671
    Description: 1SR TERREMOTI - Sorveglianza Sismica e Allerta Tsunami
    Description: JCR Journal
    Keywords: Seismic surveillance ; earthquake location and magnitude
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2020-12-14
    Description: The MURAVES (MUon RAdiography of VESuvius) project is a joint activity participated by INGV, INFN and the Universities of Naples “Federico II” and Florence. The collaboration, following the experience gained within the previous INFN R&D project Mu-Ray, is currently completing the production of a robust four square meter low power consumption detector to be installed on the flank of Mount Vesuvius, an active volcano located on the western coast of Italy. The detector is supposed to collect data for at least one year, thus allowing performing a scan of the structure of the Vesuvius volcanic cone. In this work the status of the project and some parallel activities on muon radiography are presented.
    Description: Published
    Description: id 02015
    Description: 7TM. Sviluppo e Trasferimento Tecnologico
    Description: N/A or not JCR
    Keywords: Muon radiography ; Vesuvius muon radiography ; MURAVES
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
    Publication Date: 2021-03-09
    Description: Ischia is a volcanic island, west of the caldera of Campi Flegrei, southern Italy. Since the deployment of a modern seismic network in 1970, until the 21 August 2017 earthquake, the seismicity of Ischia has been characterized by low-magnitude (Md ≤ 2:3) earthquakes located in the northern part of the island, mostly beneath the town of Casamicciola Terme at very shallow depths (∼500 m). Some of these events seem to have occurred on the same seismogenetic structure in the northern part of the island. This area coincides with that where the devastating events of 1881 and 1883 occurred and where the small-magnitude seismicity recorded between 1927 and 1936 was located. The August 2017 seismic sequence affected the same area. The current network configuration is able to locate shallow events with Md ≥ 1:0 and to detect smaller earthquakes or other types of natural and artificial events (e.g., blast fishing, geothermal well explosions; see The Seismic Network section). Here, we present the catalog of earthquakes recorded on Ischia between 1999 and February 2018 and compare the August 2017 seismic sequence with the background seismicity. Furthermore, we identified a sequence of events possibly linked to the explosion of a geothermal well on the island.
    Description: This work benefited of the project “Sale operative integrate e reti di monitoraggio del futuro: l’INGV 2.0,” Fondo integrativo speciale per la ricerca (FISR) anni 2016 e 2017 (Delibera n. 78/2017). Furthermore, this work benefited of the agreement between Istituto Nazionale di Geofisica e Vulcanologia and Italian Department of Civil Protection (DPC).
    Description: Published
    Description: 1750-1760
    Description: 6V. Pericolosità vulcanica e contributi alla stima del rischio
    Description: JCR Journal
    Keywords: Ischia ; Seismic Network ; Seismicity
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
    Publication Date: 2021-04-28
    Description: I vulcani sono sistemi estremamente complessi e la loro investigazione è resa ancora più difficile dal fatto che i principali processi si verificano al loro interno e che poi portano ad eruzioni vulcaniche, non sono direttamente accessibili all’osservazione. Nondimeno i vulcani meritano una grande attenzione non solo per gli aspetti strettamente legati alla fisica dei processi eruttivi ma anche, e soprattutto, per la grande preoccupazione legata al loro potenziale enorme potere distruttivo. Questo è particolarmente vero nella regione Campania dove due dei vulcani più pericolosi al mondo, Vesuvio e Campi Flegrei, rappresentano una minaccia per milioni di abitanti. La sorveglianza dei vulcani campani è portata avanti dall’Osservatorio Vesuviano, sede INGV di Napoli, attraverso reti sismiche, e non solo, che si sono sviluppate nel corso degli anni. Questi vulcani sono quindi già sorvegliati multiparametrici; su di essi infatti sono presenti, giusto per dare qualche esempio, reti sismiche/accelerometriche [Orazi et al., 2013, 2018, Galluzzo et al., 2018, La Rocca and Galluzzo, 2015], reti tiltmetriche [Ricco et al., 2013] e reti geodetiche [De Martino et al., 2014a e b; Iannaccone et al., 2018]. Lo sviluppo nel tempo delle reti di monitoraggio però è avvenuto in modo quasi indipendente per motivi di natura tecnologica e/o di natura logistica. Avere siti multiparametrici sui vulcani è di fondamentale importanza perché ci permette di osservare in uno stesso punto l’evoluzione nel tempo di tipi diversi di segnali, e di conseguenza di comprendere meglio la dinamica del vulcano. Mentre non è sempre semplice trovare un sito che soddisfi le esigenze di ciascuna rete (trasmissione, accesso ai satelliti, esposizione, e così via), è più immaginabile trovare soluzioni tecnologiche comuni che permettano di utilizzare strumentazioni e protocolli unici per acquisire più tipi di segnali in un unico punto. Una soluzione tecnologica di questo tipo è stata trovata nel corso delle attività previste all’interno del progetto FISR “Sale operative integrate e reti di monitoraggio del futuro: l'INGV 2.0”, obiettivo WP2, che prevedeva l’irrobustimento e lo sviluppo della rete di rilevamento multiparametrico a scala nazionale anche aumentando il monitoraggio geochimico, attraverso le installazioni di radonometri. Per l’Osservatorio Vesuviano, dunque, una stazione multiparametrica è rappresentata dalla coesistenza di una stazione sismo-tiltmetrica, una stazione GNSS ed una stazione di misurazione del Radon, installate in logica di alta affidabilità.
    Description: Published
    Description: 81-85
    Description: 1IT. Reti di monitoraggio e sorveglianza
    Description: N/A or not JCR
    Keywords: Stazione sismica multiparametrica ; Rete di monitoraggio
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
    Publication Date: 2021-05-12
    Description: L'Istituto Nazionale di Geofisica e Vulcanologia (INGV) è componente del Servizio Nazionale di Protezione Civile, ex articolo 6 della legge 24 febbraio 1992 n. 225 ed è Centro di Competenza per i fenomeni sismici, vulcanici e i maremoti per il Dipartimento della Protezione Civile Nazionale (DPC). L’Osservatorio Vesuviano, Sezione di Napoli dell’INGV, ha nei suoi compiti il monitoraggio e la sorveglianza H24/7 delle aree vulcaniche attive campane (Vesuvio, Campi Flegrei e Ischia). Tali attività sono disciplinate dall’Accordo-Quadro (AQ) sottoscritto tra il DPC e l’INGV per il decennio 2012-2021 e sono dettagliate negli Allegati A e B del suddetto AQ. Il presente Rapporto sul Monitoraggio dei Vulcani Campani rappresenta l’attività svolta dall’Osservatorio Vesuviano e dalle altre Sezioni INGV impegnate nel monitoraggio dell’area vulcanica campana nel primo semestre 2019.
    Description: Istituto Nazionale di Geofisica e Vulcanologia
    Description: Unpublished
    Description: 4V. Processi pre-eruttivi
    Description: 6SR VULCANI – Servizi e ricerca per la società
    Description: 1IT. Reti di monitoraggio e sorveglianza
    Keywords: Campi Flegrei ; Vesuvio ; Ischia ; Volcano Monitoring ; 04.06. Seismology ; 04.03. Geodesy ; 04.08. Volcanology ; 05.04. Instrumentation and techniques of general interest
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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  • 6
    Publication Date: 2020-11-30
    Description: Fumaroles are known to generate seismic and infrasonic tremor, but this fumarolic tremor has so far received little attention. Seismic records taken near the Pisciarelli fumarole, a vigorously degassing vent of the restless Campi Flegrei volcano in Italy, reveal a fumarolesourced tremor whose amplitude has recently intensified. We use independent geochemical evidence to interpret this fumarolic tremor for the first time quantitatively. We find that the temporal increase in fumarolic tremor RSAM (real-time seismic-amplitude measurement) quantitatively correlates with increases in independent proxies of fumarole activity, including the CO2 concentrations in the fumarole’s atmospheric plume, the fumarole composition (CO/CO2 and H2/H2O ratios), and temperature (T) and pressure (P) conditions of the source hydrothermal system. This association between RSAM and geochemical data suggests that the current escalation in fumarolic tremor is driven by increased gas transport and venting from a hydrothermal system that evolves toward higher T-P conditions. More widely, our results suggest that monitoring the tremor generated by fumaroles can pave the way to real-time tracking and interpreting the evolution of an ongoing hydrothermal-magmatic unrest, thus complementing information from periodic gas surveys. Our novel method of fumarole monitoring, based on well-established seismic techniques, is potentially suitable for capturing signals of unrest at any active volcano, including those in remote regions.
    Description: Published
    Description: 1131-1134
    Description: 4V. Dinamica dei processi pre-eruttivi
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
    Publication Date: 2020-11-12
    Description: On August 21, 2017, at 18:57 UTC, an earthquake of MD 4.0 occurred in Casamicciola, district of Ischia island. The damage caused by the earthquake was massive, with two victims and several buildings collapsed, and circumscribed to the areas of uptown Casamicciola, particularly in the Piazza Maio-La Rita area, and in a small area, called Fango, in Lacco Ameno. Medium and minor damages occurred in Piazza Bagni, in the area around the town hall of Casamicciola and in the Sentinella area. Even assuming the poor quality constructions and/or not in compliance with the anti-seismic regulations, such a level of damage has induced the scientific community to analyse the effects of local site amplifications, that usually are not negligible in volcanic areas. As a matter of fact the seismic station IOCA, located very close to the high damage areas, recorded a peak ground acceleration (PGA) of 2.6 m/s2. This paper is aimed to study the possible site amplification in the areas heavily affected by the August 21 earthquake in order to better understand the causes of these macroseismic effects and high damage levels already observed in the past.
    Description: Published
    Description: Centro Congressi della Stazione Marittima, Trieste, Italy
    Description: 6V. Pericolosità vulcanica e contributi alla stima del rischio
    Keywords: Site effects ; Polarization analysis ; Ischia Island ; Seismic noise
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 8
    Publication Date: 2020-12-18
    Description: On August 21, 2017, at 18:57 UTC, an earthquake of MD 4.0 occurred in Casamicciola, district of Ischia island at about 2 Km km depth. In volcanic areas, such as the Ischia Island, the precise localization of the earthquakes requires specific velocity models, both for the wide lithological variability and for the high geothermal gradient. These models are available, for example, for the Vesuvius and for the Campi Flegrei areas, but not for the Island of Ischia because they need to use the local seismicity. Since 1999, at least 78 earthquakes have been recorded on Ischia (updated to 21 February 2018) (D’Auria et al., 2018) and have been localized using the model used for the Campi Flegrei, on the basis of the similar geological and volcanological context of the two volcanoes. Therefore, the aim of this work is the definition of average 1-D shear-wave velocity model of the shallower crust of Ischia using ambient noise array techniques and spectral ratios evaluated on broad band seismic signals recorded by mobile and permanent networks deployed in the last year.
    Description: Published
    Description: Bologna
    Description: 1T. Struttura della Terra
    Keywords: Ischia Island ; Shear Wave ; Velocity model ; Seismic noise
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 9
    Publication Date: 2021-01-26
    Description: Geophysical and geochemical networks are routinely deployed on active volcanoes to observe and monitor unrest periods. However, changes of the physical parameters with time are related to either magma/fluid movement or variations occurring in the hydrothermal systems hosted in the volcanic edifice. Here we use four years of ambient seismic noise recorded at the Stromboli volcano to reconstruct its shallow structure using the ambient noise cross-correlation method. At the same time, we detect temporal variations of the seismic velocities associated with the volcanic activity. We correlated the most reliable variations both in space and in time with other seismic and geochemical information in order to identify lapses of time of general unrest. We also implemented a method to enhance their spatial visualization for the interpretation. We found that the spatial mapping of the seismic velocity temporal variations obtained processing the data at high frequency (1.5–2.5 Hz) match with the location of the main hydrothermal reservoirs of the volcano. This suggests that there is a relationship between volcanic activity and hydrothermal areas that can be detected and monitored for a better understanding of the volcanic phenomena
    Description: Published
    Description: 107177
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: JCR Journal
    Keywords: Hydrothermal systems ; Stromboli volcano
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 10
    Publication Date: 2021-01-26
    Description: . The definition of the network resolution power is an important parameter to be considered when evaluating most of the seismic analysis, being connected to the location quality and earthquakes detectability. We estimated the resolving power of the seismic network of Campi Flegrei. The results show that the actual moment magnitude threshold is 0.5 in the Solfatara area, center of the caldera, but increases sharply going away from the center. We also estimated the theoretical resolution power of the actual seismic network of Campi Flegrei plus 5 hypothetical borehole stations, moving the borehole stations into 3 different wells. As expected, big improvements in the location parameters come from the use of borehole stations. The results show that a 3000 m deep borehole located close to the actual hypocentral area would allow to detect and locate the very low magnitude earthquakes, probably connected to the hydrothermal system characterizing the Campi Flegrei caldera. Finally, we performed an optimization analysis of the permanent seismic network of Campi Flegrei finding the best 3 station positions that would increase the resolution power of the network to locate earthquakes in the South and offshore part of the caldera. We evidenced that the actual network has an improvable resolution in the South and West part of the caldera
    Description: Published
    Description: 49-55
    Description: 1IT. Reti di monitoraggio e sorveglianza
    Description: JCR Journal
    Keywords: Campi Flegrei
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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