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- PublicationOpen AccessThe seismic network of Ischia island from 1993 to 2021(Geological Society of London, 2024)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;; ; ; ; ; ; ; ; ; ; ; ; ; The volcanic island of Ischia has shown to have an important seismogenic potential, being the location of several destructive earthquakes, e.g. 1881, 1883 and 2017. The damage caused by these earthquakes was more connected to the proximity of the source to the surface than to their magnitude (Mw < 5.2). The need to monitor and model this seismicity required the installation of a dense and modern seismic network. The first modern seismic station on the island was installed in 1993, and the network was successively increased with time. A meaningful improvement to the network was made after the earthquake that occurred on the 21 of August 2017. The network currently has 11 sites with velocimeters and some of them with accelerometers installed too. We analysed the seismic network configuration in comparison with the seismicity that characterizes the area to mark a starting point for future seismological analysis. The network is currently able to locate shallow earthquakes with duration magnitude greater or equal to 0 in the whole island.23 9 - PublicationOpen AccessReconstruction of the 2002 tsunami at Stromboli using the non-hydrostatic WAVE model (NHWAVE)(Geological society of London, 2021)
; ; ; ; ; In December 2002, two landslides along the Sciara del Fuoco at Stromboli triggered large tsunami waves that caused significant damage on the coast of the island up to an elevation of about 10 mabove sea-level. In this work, we report in detail the items and the methods used to reconstruct the 2002 tsunami at Stromboli highlighting their strengths and limits. In particular, we describe: (1) the non-hydrostatic WAVE model used to simulate the triggering landslide, the wave propagation and the inundation/runup on the land; (2) the data and methods used to generate the topo-bathymetric computational grid; and (3) the field data acquired on Stromboli after the 2002 tsunami used as ground truth for checking the simulation outputs. Our results show that the most severe damage on the coast of Stromboli could have been caused by the interaction of successive waves triggered by the same landslide. In addition, we also describe the influence that the bathymetry had on the waves propagation and interaction.16 5 - PublicationOpen AccessThe Hydrothermal System of the Campi Flegrei Caldera, Italy(Springer, 2022)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;; ; ; ;; ; ; ; ;In this chapter, we review the state-of-the-art of the Campi Flegrei caldera (Naples) hydrothermal system, and its behaviour during the last decades. The Campi Flegrei caldera has been undergoing unrest since 1950, as evidenced by recurrent bradyseismic episodes accompanied by manifest changes in the degassing budget, degassing patterns and in the composition of the fumarolic fluids. caldera. We propose a conceptual model of the hydrothermal system feeding Solfatara fumaroles, where geochemical information is integrated with Audio Magneto Telluric measurements, which yields a realistic picture of the geometry of the system up to a depth of 2.5 km. The model identifies a 2 km elongated vertical high resistivity structure in axis with the Solfatara fumaroles, which represents a relatively high permeability zone allowing hot fluid ascent from depth to the shallower portions of the hydrothermal system. Pulsed injections of hot magmatic fluids (CO2-rich and CH4-poor oxidised fluids) at the bottom of the hydrothermal system is thought to be one of the key processes that has controlled the evolution of the system during the last 40 years. The episodes of injection of magmatic fluids changed in frequency and intensity during time, ultimately causing an overall heating and pressurisation of the system since the early 2000s, as reflected by escalating degassing flux, increase in areal extension of the degassing areas, and in the composition of the fumaroles. In particular, the CO2/CH4 and He/CH4 ratios of fumarolic fluids exhibited recurrent peaks, marking the episodes of injection of magmatic fluids. Moreover, the quasi-monotonic increasing trend of the fumarolic CO2/H2O ratio, from 0.15 to 0.18 in 2000 to 0.4 in 2018–2019, has been interpreted as due to the combined action of partial steam condensation, and CO2 addition from a magmatic source and possibly from de-carbonation of hydrothermal calcite favoured by the heating of the hydrothermal reservoir. These changes strongly suggest that the ongoing (since 2000) unrest is triggered by a degassing magma source, but also that the system’s response is modulated by dynamics and structures of the overlying hydrothermal envelope. This evolution clearly requires careful scientific scrutiny and intensified monitoring in the years to come.44 30 - PublicationOpen AccessNatural disasters and the European Printed News NetworkThe circulation of news about natural calamities in early modern Europe can be analysed from different points of view. This text will concentrate on the development of the news network about natural disasters in the context of the history of the circulation of news, from its beginning with manuscript newssheets or avvisi through to the complex and more fully articulated network developed throughout Europe in the eighteenth century. In particular, I will focus on the news that crossed political or linguistic borders. It is no easy task to consider this subject exhaustively. One of the crucial points is the quantities to consider: the volume of sources, which is to say handwritten news, news pamphlets (relations, broadsheets) and newspapers (or gazettes) on the one hand; on the other, the number of events. For instance, the European Archive of Historical Earthquakes Data (ahead) counts 204 ‘large’ and ‘extra large’ events in Europe and western Turkey between 1501 and 1750.1 Digital humanities helps significantly in this area of research through the digitisation and the uploading of more and more documents, but the corpus is not yet large enough to cover the whole mass of news and events. The calamities selected are those caused by geophysical activity like earthquakes, volcanic eruptions, landslides, floods, and storms. Each type of event has different spatiotemporal development and this affects the ways in which they were communicated.
21 3 - PublicationRestrictedLettera inedita di Nicola Covelli a Teodoro Monticelli con riferimenti al << Prodromo della mineralogia vesuviana>>(Associazione Storica del Caiatino, 2023)
; La missiva di Nicola Covelli a Teodoro Monticelli fa parte del materiale raccolto negli anni del prof. Antonio Parascandola in possesso del nipote Pasquale che gentilmente mi ha omaggiato...39 1