Sea gravity data in the Gulf of Naples: a contribution to delineating the structural pattern of the Vesuvian area

Berrino, Giovanna; Corrado, G.; Riccardi, Umberto

doi:10.1016/s0377-0273(97)00061-9

Cited by 82 publications

(63 citation statements)

References 20 publications

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“…NE-SW and subordinate NW-SE extensional structures predominate, controlling the shape of the Caldera and resurgence at Ischia [Orsi et al, 1996;. NE-SW systems border the Plio-Quaternary Acerra Depression, $3 km deep, to the west of the Caldera [Scandone et al, 1991;Berrino et al, 1998]. Somma-Vesuvio District (0.3 Ma to Present) mainly erupted phonolites and trachybasalts at the intersection among NW-SE, NE-SW, and, subordinately, N-S structures (Figure 4e) [Santacroce, 1987;Piochi et al, 2005, and references therein].…”

Section: Main Volcanic Edificesmentioning

confidence: 99%

“…These control the emplacement of the fissures on the volcano slopes. Gravity and seismic data show that Vesuvio lies along a major NE-SW structure, offsetting NW-SE normal faults [Berrino et al, 1998;Bruno et al, 1998]. …”

Section: Main Volcanic Edificesmentioning

confidence: 99%

“…The transverse basins lie to the SW of the volcanoes (Vulsini, Sabatini, Colli Albani, Roccamonfina), except Acerra, to the NE. The known depth of the transverse basins is 1.3-3 km [Mariani and Prato, 1988;Berrino et al, 1998] and the onset of sedimentation is 2 -3 Ma older than the onset of the nearby volcanic activity [Mariani and Prato, 1988;Faccenna et al, 1994a].…”

Section: Main Volcanic Edificesmentioning

confidence: 99%

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Transverse systems along the extensional Tyrrhenian margin of central Italy and their influence on volcanism

2006

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[1] The Tyrrhenian margin of central Italy has undergone Plio-Quaternary extension, developing NW-SE normal faults and NE-SW faults. The NE-SW faults decrease in frequency toward NE with the stretching factor b, becoming negligible for b < 1.3. Plio-Quaternary volcanoes, aligned NW-SE, formed at the intersection among NE-SW and NW-SE faults; fissure eruptions are mostly controlled by NE-SW faults. Structural field data show normal motions for 76% of NW-SE Quaternary faults and transtensive for 73% of NE-SW Quaternary faults. Analogue experiments simulating the NE-SW Tyrrhenian extension show that transverse transtensive faults form with differential extension Db > 0.21. These data suggest that the NE-SW transtensive structures are transfer faults of the NW-SE normal faults due to relevant differential extension (Db > 0.21) within a stretched crust (b > 1.3). The minor dip-slip and strikeslip components of the NE-SW and NW-SE faults, respectively, possibly result from the NW-SE extension due to the southeastward slab retreat beneath the Calabrian arc. The NE-SW and NW-SE extensions in the central southern Tyrrhenian Sea account for the composite kinematics of the NE-SW structures, which, in turn, exert a twofold role in controlling volcanism. Where their dip-slip component forms basins, the associated decompression induces magma accumulation (developing central volcanoes) at the intersection among NW-SE and NE-SW systems. Where transfer faults are mainly strike slip, their inferred subvertical attitude enhances their permeability to magma, accounting for the observed NE-SW fissure eruptions. Regional extension, forming NW-SE faults, enhances the overall generation and rise of magma along the margin, but NE-SW structures focus magma rise and emplacement at shallower levels. Citation: Acocella, V., and R.

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Section: Main Volcanic Edificesmentioning

confidence: 99%

Section: Main Volcanic Edificesmentioning

confidence: 99%

Section: Main Volcanic Edificesmentioning

confidence: 99%

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Transverse systems along the extensional Tyrrhenian margin of central Italy and their influence on volcanism

2006

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“…It was derived from the integration of quality checked and reanalyzed previously measured on-land data [Berrino et al, 1998] with new gravity data collected offshore and along selected profiles in the Vesuvian area (TOMOVES Group).…”

Section: Datamentioning

confidence: 99%

“…It is characterized by a strip of high gradients which follows the Appenines, runs almost parallel to the Sorrento peninsula, and turns southwest at the southern sector of the Gulf of Pozzuoli, in a broad gravity minimum [Berrino et al, 1998]. The Somma-Vesuvius is situated on the southern edge of a large gravity minimum north of Naples, corresponding to the Acerra graben [Cassano and La Torre, 1987].…”

Section: Sequential Integrated Inversionmentioning

confidence: 99%

Three‐dimensional modeling of Mount Vesuvius with sequential integrated inversion

Tondi

Franco

2003

J. Geophys. Res.

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.[1] A new image of Mount Vesuvius and the surrounding area is recovered from the tomographic inversion of 693 first P wave arrivals recorded by 314 receivers deployed along five profiles which intersect the crater, and gravity data collected in 17,598 stations on land and offshore. The final three-dimensional (3-D) velocity model presented here is determined by interpolation of five 2-D velocity sections obtained from sequential integrated inversion (SII) of seismic and gravity data. The inversion procedure adopts the ''maximum likelihood'' scheme in order to jointly optimize seismic velocities and densities. In this way we recover velocity and density models both consistent with seismic and gravity data information. The model parameterization of these 2-D models is chosen in order to keep the diagonal elements of the seismic resolution matrix in the order of 0.2-0.8. The highest values of resolution are detected under the volcano edifice. The imaged 6-km-thick crustal volume underlies a 25 Â 45 km 2 area. The interpolation is performed by choosing the right grid for a smoothing algorithm which prepares optimum models for asymptotic ray theory methods. Hence this model can be used as a reference model for a 3-D tomographic inversion of seismic data. The 3-D gravity modeling is straightforward. The results of this study clearly image the continuous structure of the Mesozoic carbonate basement top and the connection of the volcano conduit structure to two shallow depressions, which in terms of hazard prevention are the regions through which magma may more easily flow toward the surface and cause possible eruptions.

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Assessing future vent opening locations at the Somma‐Vesuvio volcanic complex: 1. A new information geodatabase with uncertainty characterizations

et al. 2017

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This study presents new and revised data sets about the spatial distribution of past volcanic vents, eruptive fissures, and regional/local structures of the Somma‐Vesuvio volcanic system (Italy). The innovative features of the study are the identification and quantification of important sources of uncertainty affecting interpretations of the data sets. In this regard, the spatial uncertainty of each feature is modeled by an uncertainty area, i.e., a geometric element typically represented by a polygon drawn around points or lines. The new data sets have been assembled as an updatable geodatabase that integrates and complements existing databases for Somma‐Vesuvio. The data are organized into 4 data sets and stored as 11 feature classes (points and lines for feature locations and polygons for the associated uncertainty areas), totaling more than 1700 elements. More specifically, volcanic vent and eruptive fissure elements are subdivided into feature classes according to their associated eruptive styles: (i) Plinian and sub‐Plinian eruptions (i.e., large‐ or medium‐scale explosive activity); (ii) violent Strombolian and continuous ash emission eruptions (i.e., small‐scale explosive activity); and (iii) effusive eruptions (including eruptions from both parasitic vents and eruptive fissures). Regional and local structures (i.e., deep faults) are represented as linear feature classes. To support interpretation of the eruption data, additional data sets are provided for Somma‐Vesuvio geological units and caldera morphological features. In the companion paper, the data presented here, and the associated uncertainties, are used to develop a first vent opening probability map for the Somma‐Vesuvio caldera, with specific attention focused on large or medium explosive events.

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Sea gravity data in the Gulf of Naples: a contribution to delineating the structural pattern of the Vesuvian area

Cited by 82 publications

References 20 publications

Transverse systems along the extensional Tyrrhenian margin of central Italy and their influence on volcanism

Transverse systems along the extensional Tyrrhenian margin of central Italy and their influence on volcanism

Three‐dimensional modeling of Mount Vesuvius with sequential integrated inversion

Assessing future vent opening locations at the Somma‐Vesuvio volcanic complex: 1. A new information geodatabase with uncertainty characterizations

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