Seismological Monitoring of Mount Vesuvius (Italy): More than a Century of Observations

Giudicepietro, Flora; Orazi, M.; Scarpato, Giovanni; Peluso, R.; D’Auria, Luca; Ricciolino, Patrizia; Bascio, Domenico Lo; Esposito, Antonietta M.; Borriello, G.; Capello, Marco; Caputo, Antonio Casimiro; Buonocunto, Ciro; Cesare, W. De; Vilardo, G.; Martini, M.

doi:10.1785/gssrl.81.4.625

Cited by 23 publications

(24 citation statements)

References 13 publications

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“…In addition, the monitoring system includes four tide gauges, a gravimetric network, a leveling network, and several geochemical stations, which together represent a complete, high-level monitoring system (Berrino et al, 2013;Chiodini et al, 2010;D'Auria et al, 2011;Giudicepietro et al, 2010). Although observations of the deformations that have occurred on land are available since the Ancient Roman era and instrumental measurements have been performed since the beginning of the last century, no measurements were available until 2008 for the submarine part of the caldera.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Seafloor Deformation in the Marine Sector of the Campi Flegrei Caldera (Italy)

et al. 2018

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We present an assessment of vertical seafloor deformation in the shallow marine sector of the Campi Flegrei caldera (southern Italy) obtained from GPS and bottom pressure recorder (BPR) data, acquired over the period April 2016 to July 2017 in the Gulf of Pozzuoli by a new marine infrastructure, MEDUSA. This infrastructure consists of four fixed buoys with GPS receivers; each buoy is connected by cable to a seafloor multisensor module hosting a BPR. The measured maximum vertical uplift of the seafloor is about 4.2 ± 0.4 cm. The MEDUSA data were then compared to the expected vertical displacement in the marine sector according to a Mogi model point source computed using only GPS land measurements. The results show that a single point source model of deformation is able to explain both the GPS land and seafloor data. Moreover, we demonstrate that a network of permanent GPS buoys represents a powerful tool to measure the seafloor vertical deformation field in shallow water. The performance of this system is comparable to on‐land high‐precision GPS networks, marking a significant achievement and advance in seafloor geodesy and extending volcano monitoring capabilities to shallow offshore areas (up to 100 m depth). The GPS measurements of MEDUSA have also been used to confirm that the BPR data provide an independent measure of the seafloor vertical uplift in shallow water.

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Section: Introductionmentioning

confidence: 99%

Measurement of Seafloor Deformation in the Marine Sector of the Campi Flegrei Caldera (Italy)

et al. 2018

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“…Since 1944 to 1964, the seismicity of Vesuvius was very low. In 1964 it was observed a sudden increase in the occurrence rate and in the magnitude of the earthquakes, which persists until nowadays [ Giudicepietro et al , ]. During the last decades the seismicity rate has shown an unsteady behavior with at least four episodes of increased strain release rate, occurrence rate, and event magnitude [ D'Auria et al , ].…”

Section: Introductionmentioning

confidence: 99%

The stress field beneath a quiescent stratovolcano: The case of Mount Vesuvius

D’Auria

Massa

Matteo

2014

J. Geophys. Res. Solid Earth

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We have analyzed a focal mechanism data set for Mount Vesuvius, consisting of 197 focal mechanisms of events recorded from 1999 to 2012. Using different approaches and a comparison between observations and numerical models, we have determined the spatial variations in the stress field beneath the volcano. The main results highlight the presence of two seismogenic volumes characterized by markedly different stress patterns. The two volumes are separated by a layer where the seismic strain release shows a significant decrease. Previous studies postulated the existence, at about the same depth, of a ductile layer allowing the spreading of the Mount Vesuvius edifice. We interpreted the difference in the stress pattern within the two volumes as the effect of a mechanical decoupling caused by the aforementioned ductile layer. The stress pattern in the top volume is dominated by a reverse faulting style, which agrees with the hypothesis of a seismicity driven by the spreading process. This agrees also with the persistent character of the seismicity located within this volume. Conversely, the stress field determined for the deep volume is consistent with a background regional field locally perturbed by the effects of the topography and of heterogeneities in the volcanic structure. Since the seismicity of the deep volume shows an intermittent behavior and has shown to be linked to geochemical variations in the fumaroles of the volcano, we hypothesize that it results from the effect of fluid injection episodes, possibly of magmatic origin, perturbing the pore pressure within the hydrothermal system.

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“…Etna is well documented by a large amount of sources that have reported the seismic and volcanic phenomena occurring on the volcano since the late 1600s (Azzaro et al 2000;Branca and Del Carlo 2005). Such a large dataset of historical information is not common and is comparable, in Italy, to that of Vesuvius (Giudicepietro et al 2010). As for long-term seismicity known through macroseismic data, the first release of the historical catalog of Mt.…”

Section: Introductionmentioning

confidence: 99%

Estimating the Magnitude of Historical Earthquakes from Macroseismic Intensity Data: New Relationships for the Volcanic Region of Mount Etna (Italy)

Azzaro

D’Amico

Tuvè

2011

Seismological Research Letters

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Seismological Monitoring of Mount Vesuvius (Italy): More than a Century of Observations

Cited by 23 publications

References 13 publications

Measurement of Seafloor Deformation in the Marine Sector of the Campi Flegrei Caldera (Italy)

Measurement of Seafloor Deformation in the Marine Sector of the Campi Flegrei Caldera (Italy)

The stress field beneath a quiescent stratovolcano: The case of Mount Vesuvius

Estimating the Magnitude of Historical Earthquakes from Macroseismic Intensity Data: New Relationships for the Volcanic Region of Mount Etna (Italy)

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