Research Article| September 01, 2015 Stratigraphy, structure, and volcano-tectonic evolution of Solfatara maar-diatreme (Campi Flegrei, Italy) Roberto Isaia; Isaia † 1Istituto Nazionale di Geofisica e Vulcanologia, Sezione Napoli Osservatorio Vesuviano, Via Diocleziano 328, 80124 Napoli, Italy †roberto.isaia@ingv.it Search for other works by this author on: GSW Google Scholar Stefano Vitale; Vitale 2Dipartimento Scienze della Terra, dell'Ambiente delle Risorse (DiSTAR), Università Federico...

Campi Flegrei collapse caldera (Italy) is a high-risk volcanic area located close to Naples and includes part of the densely populated city. This characterised by large up down ground displacements. The last uplift episode caused 3.5 m cumulative vertical displacement at centre town Pozzuoli, during period 1969-1984. Up movements in this often occur without intercurring eruptions are similar what observed other calderas worldwide. Here, however, they appear more evident amplified....

Abstract Phreatic and hydrothermal eruptions are small energetic explosive events that generally have few to no precursors represent a considerable hazard in tourist urban areas. At the Campi Flegrei caldera, these occurred at Solfatara volcano likely nearby Pisciarelli site, where most powerful phenomena located. Here, increased activity has caused relevant morphological changes led local authorities deny access site. Stratigraphic, structural, geophysical investigations allowed us...

The island of Pantelleria, located in the Sicily Channel, is a volcanic system characterized by peralkaline (pantelleritic) magmatism and recurrent explosive eruptions, which have produced prominent caldera structures. Active geothermal manifestations, including gas emissions, hot springs, elevated temperatures detected deep boreholes, underscore its potential as resource.To elucidate island's subsurface enhance understanding structures, reservoirs, pathways hydrothermal fluid circulation,...

This study aims to identify and characterize structures through geophysical investigations within a sector of the central Apennines (Central Italy). The research focuses on L’Aquila-Scoppito Basin (ASB), which constitutes western part larger L’Aquila intermontane basin. area is notable for its high density Quaternary faults urban settlements significant historical value. ASB bounded by active normal responsible recent seismicity, with events magnitude up M 6.5-7,...

The island of Vulcano, part the Aeolian Archipelago, is a significant volcanic edifice in Italy. Its active geothermal system and frequent unrest, particularly ongoing phase, since September 2021, marked by high fumarole temperatures, changes gas composition, ground deformation, micro-seismicity, underscore importance understanding subsurface processes driving phenomena.The present study, using TOUGH2 code (Pruess et al., 1999), aims to enhance our Vulcano. A highly constrained petrophysical...

Abstract The central sector of the Campi Flegrei volcano, including Solfatara maar and Pisciarelli fumarole field, is currently most active area caldera as regards seismicity gaseous emissions it plays a significant role in ongoing unrest. However, general volcano-tectonic reconstruction entire still missing. This work aims to depict, for first time, architecture through application deep Electrical Resistivity Tomography. We reconstructed three-dimensional resistivity model sector. Results...

The Campi Flegrei caldera experienced an unrest phase dating to 2005, which primary expression is the impressive ground uplift, accompanied by increasing degassing and seismic activities. Such last two phenomena developed mainly in central sector, including Solfatara-Pisciarelli complex. However, inner structure of such area still not defined, this originates a poor understanding ongoing unrest. This paper describes results new magnetotelluric survey performed sector. Through inversion data...

Abstract We report, for the first time, evidence of seismically induced soft‐sediment deformations in central area active Campi Flegrei caldera (southern Italy). analyzed marine‐transitional and continental sequences located along coastal La Starza cliffs several stratigraphic logs exposed during excavation a 1‐km‐long tunnel Pozzuoli area. The successions host structures including sand dikes volcanoes, which are largely dated within 4.55‐ to 4.28‐kyr BP interval. volcano‐sedimentary...

Abstract Despite its known reconstructed volcanic history, the structural setting and present state of Astroni Volcano Campi Flegrei caldera in Italy are still poorly defined. Through structural, geophysical, geochemical investigations, we elucidate structure activity Volcano, which hosts tuff cones, scoriae lava domes, lakes on crater floor. A volcano‐tectonic analysis focused entire volcano edifice, coupled with electrical resistivity tomography shallower part crater, revealed main rock...

A controlled source audiofrequency magnetotelluric (CSAMT) survey has been undertaken in the Pantano di San Gregorio Magno faulted basin, an earthquake prone area of Southern Apennines Italy. dataset from 11 soundings, distributed along a nearly N-S 780 m long profile, was acquired basin's easternmost area, where fewest data are available as to faulting shallow features. preliminary skew analysis allowed prevailing 2D nature be ascertained. Then, using single-site multi-frequency approach,...

Fluid injection in and withdrawal from wells are basic procedures mining activities deep resources exploitation, such as oil gas extraction, permeability enhancement for geothermal exploitation waste fluid disposal. All of these have the potential to induce seismicity, exemplified by 2006 Basel earthquake (ML 3.4). Despite several decades experience, mechanisms induced seismicity not known detail, which prevents effective risk assessment and/or mitigation. In this study, we provide an...

Magnetotelluric (MT) soundings performed in the past volcanic area of Mt. Vesuvius by two independent research groups showed same places MT apparent resistivity curves with very similar shape, but statically shifted one order magnitude, at least. To try to resolve this ambiguity new controlled source audio-magnetotelluric (CSAMT) measurements have been carried out sites. The interpretation CSAMT dataset, combined that shallow dipole-dipole geoelectrical tomographies previously allowed a...

Abstract This paper presents the results of an original short-period magnetotelluric survey performed on Vulcano Island (Italy). The obtained three-dimensional resistivity model details structures up to 2.5 km depth, hitherto unexplored. La Fossa caldera area corresponds a moderate resistive anomaly, which extends down resolved depth and likely represents “conduit-like” structure along magmatic fluids stall ascend. Other anomalies characterize volcanic edifices, craters, conduits, and/or...

Small-scale buried structures in volcanic environments could present an extreme relevance, due to their link the eruptive activity of individual monogenetic edifices, but require, be detected, a high-resolution geophysical imaging. In such context, Electrical Resistivity Tomography is often able recover primary knowledge about heterogeneity layers, despite reduced investigation depth. this paper example matter proposed, concerning Posillipo hill, southeastern sector Campi Flegrei Caldera...