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  • 2015-2019  (21)
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  • 1
    Publication Date: 2024-02-17
    Description: The Ischia island (Italy) is largely occupied by a resurgent caldera characterized by one of the highest uplift of its floor ever recognized, that is in the order of 1000 m over at least 55-33 ka. This process produced an asymmetric fault-bounded block, whose northern side experienced several shallow (〈 2 km depth) and destructive earthquakes in 1881, 1883 and 2017 (M4.0) (Selva et al., 2019). Presently the area is characterized by differential ground movements, generally dominated by subsidence of the resurgent block. This phenomenon is well constrained by the following levelling measurements. Vertical ground deformations of Ischia have been monitored by means of periodic measurements along a complex and dense leveling network, which was first established by Istituto Geografico Militare in 1913, following the 1881-1883 earthquakes and the intense flood of 1910. The present network, implemented through time, is 110 km long and includes 260 benchmarks. The reference benchmark for all measurements is installed along the northeastern coast, at Porto d'Ischia (Church of S. Maria di Portosalvo, elevation = 3.0360 m; Del Gaudio et al., 2011). The network is mainly arranged in loops because such a configuration permits to minimize and check the errors associated to the leveling measurements. The orthometric height of all benchmarks, computed with respect to the reference site, is obtained by minimizing the misclosures of each loop by means of a least-squares compensation applied to the measured elevation differences between successive benchmarks (Del Gaudio et al., 2011). Measurements were carried out in 1978, 1984, 1987, 1990, 1994, 1997, 2001, 2003, 2006, 2010 and 2017 (Database). The data have been analyzed and modelled by Trasatti et al., 2019. For the analysis the authors selected the more complete time series of 1987, 1990, 1994, 1997, 2001, 2003 and 2010. The last leveling of 2017 was carried out only along a small portion of the northern part of the network (Ricco et al., 2018) and does not permit a complete evaluation of the deformation field of the island. The complete dataset is presented in this database.
    Keywords: 1; 10; 100A; 100B; 100C; 101A; 101B; 102; 103; 103N; 104; 105; 106; 107; 108; 109; 11; 110; 111; 112; 113; 114; 115; 116; 117; 118; 119; 120; 121; 122; 123; 124; 125; 126; 127; 128; 129; 12A; 12B; 13; 130A; 130B; 131A; 132; 133; 134; 135; 136; 137; 138; 139A; 139B; 14; 140; 141; 142; 143; 144; 145; 146; 147; 148; 149; 15; 150A; 150B; 151; 152; 153; 154; 155; 156; 157; 158; 159; 16; 160; 161; 162; 163; 164; 165; 166; 167; 168; 169; 17; 170; 171; 172; 173; 174; 175; 176; 177; 178; 179; 180; 181; 182; 183; 184; 185; 186; 187; 188; 189; 18A; 19; 190; 191; 192; 193; 20A; 21; 21C; 22; 23A; 23B; 24; 25; 26A; 27; 28A; 28C; 29; 2B; 3; 30A; 31; 32; 33; 34; 35A; 35B; 36; 37; 38A; 38B; 39; 4; 40; 41; 42A; 42B; 43; 44; 45A; 45B; 46B; 47; 48; 49; 5; 50; 51; 52; 53; 54; 55A; 56A; 57; 58; 59; 6; 60A; 60B; 61; 62A; 62B; 63A; 63B; 64; 65A; 66A; 67; 68A; 69; 7; 70A; 70B; 71A; 71B; 71C; 71D; 71E; 72A; 72B; 72C; 73; 74; 75A; 75B; 76A; 76B; 77A; 77B; 77C; 78A; 78B; 79; 8; 80A; 81; 82; 83A; 83B; 84; 85B; 86B; 87; 88; 89; 9; 90; 91; 92; 93; 94A; 94B; 95; 96A; 96B; 97A; 97B; 98A; 98B; 99A; 99B; BENCH; caldera resurgence; ELEVATION; Elevation, error; Event label; ground deformation; Identification; INGV_Ischia-001; INGV_Ischia-002B; INGV_Ischia-003; INGV_Ischia-004; INGV_Ischia-005; INGV_Ischia-006; INGV_Ischia-007; INGV_Ischia-008; INGV_Ischia-009; INGV_Ischia-010; INGV_Ischia-011; INGV_Ischia-012A; INGV_Ischia-012B; INGV_Ischia-013; INGV_Ischia-014; INGV_Ischia-015; INGV_Ischia-016; INGV_Ischia-017; INGV_Ischia-018A; INGV_Ischia-019; INGV_Ischia-020A; INGV_Ischia-021; INGV_Ischia-021C; INGV_Ischia-022; INGV_Ischia-023A; INGV_Ischia-023B; INGV_Ischia-024; INGV_Ischia-025; INGV_Ischia-026A; INGV_Ischia-027; INGV_Ischia-028A; INGV_Ischia-028C; INGV_Ischia-029; INGV_Ischia-030A; INGV_Ischia-031; INGV_Ischia-032; INGV_Ischia-033; INGV_Ischia-034; INGV_Ischia-035A; INGV_Ischia-035B; INGV_Ischia-036; INGV_Ischia-037; INGV_Ischia-038A; INGV_Ischia-038B; INGV_Ischia-039; INGV_Ischia-040; INGV_Ischia-041; INGV_Ischia-042A; INGV_Ischia-042B; INGV_Ischia-043; INGV_Ischia-044; INGV_Ischia-045A; INGV_Ischia-045B; INGV_Ischia-046B; INGV_Ischia-047; INGV_Ischia-048; INGV_Ischia-049; INGV_Ischia-050; INGV_Ischia-051; INGV_Ischia-052; INGV_Ischia-053; INGV_Ischia-054; INGV_Ischia-055A; INGV_Ischia-056A; INGV_Ischia-057; INGV_Ischia-058; INGV_Ischia-059; INGV_Ischia-060A; INGV_Ischia-060B; INGV_Ischia-061; INGV_Ischia-062A; INGV_Ischia-062B; INGV_Ischia-063A; INGV_Ischia-063B; INGV_Ischia-064; INGV_Ischia-065A; INGV_Ischia-066A; INGV_Ischia-067; INGV_Ischia-068A; INGV_Ischia-069; INGV_Ischia-070A; INGV_Ischia-070B; INGV_Ischia-071A; INGV_Ischia-071B; INGV_Ischia-071C; INGV_Ischia-071D; INGV_Ischia-071E; INGV_Ischia-072A; INGV_Ischia-072B; INGV_Ischia-072C; INGV_Ischia-073; INGV_Ischia-074; INGV_Ischia-075A; INGV_Ischia-075B; INGV_Ischia-076A; INGV_Ischia-076B; INGV_Ischia-077A; INGV_Ischia-077B; INGV_Ischia-077C; INGV_Ischia-078A; INGV_Ischia-078B; INGV_Ischia-079; INGV_Ischia-080A; INGV_Ischia-081; INGV_Ischia-082; INGV_Ischia-083A; INGV_Ischia-083B; INGV_Ischia-084; INGV_Ischia-085B; INGV_Ischia-086B; INGV_Ischia-087; INGV_Ischia-088; INGV_Ischia-089; INGV_Ischia-090; INGV_Ischia-091; INGV_Ischia-092; INGV_Ischia-093; INGV_Ischia-094A; INGV_Ischia-094B; INGV_Ischia-095; INGV_Ischia-096A; INGV_Ischia-096B; INGV_Ischia-097A; INGV_Ischia-097B; INGV_Ischia-098A; INGV_Ischia-098B; INGV_Ischia-099A; INGV_Ischia-099B; INGV_Ischia-100A; INGV_Ischia-100B; INGV_Ischia-100C; INGV_Ischia-101A; INGV_Ischia-101B; INGV_Ischia-102; INGV_Ischia-103; INGV_Ischia-103N; INGV_Ischia-104; INGV_Ischia-105; INGV_Ischia-106; INGV_Ischia-107; INGV_Ischia-108; INGV_Ischia-109; INGV_Ischia-110; INGV_Ischia-111; INGV_Ischia-112; INGV_Ischia-113; INGV_Ischia-114; INGV_Ischia-115; INGV_Ischia-116; INGV_Ischia-117; INGV_Ischia-118; INGV_Ischia-119; INGV_Ischia-120; INGV_Ischia-121; INGV_Ischia-122; INGV_Ischia-123; INGV_Ischia-124; INGV_Ischia-125; INGV_Ischia-126; INGV_Ischia-127; INGV_Ischia-128; INGV_Ischia-129; INGV_Ischia-130A; INGV_Ischia-130B; INGV_Ischia-131A; INGV_Ischia-132; INGV_Ischia-133; INGV_Ischia-134; INGV_Ischia-135; INGV_Ischia-136; INGV_Ischia-137; INGV_Ischia-138; INGV_Ischia-139A; INGV_Ischia-139B; INGV_Ischia-140; INGV_Ischia-141; INGV_Ischia-142; INGV_Ischia-143; INGV_Ischia-144; INGV_Ischia-145; INGV_Ischia-146; INGV_Ischia-147; INGV_Ischia-148; INGV_Ischia-149; INGV_Ischia-150A; INGV_Ischia-150B; INGV_Ischia-151; INGV_Ischia-152; INGV_Ischia-153; INGV_Ischia-154; INGV_Ischia-155; INGV_Ischia-156; INGV_Ischia-157; INGV_Ischia-158; INGV_Ischia-159; INGV_Ischia-160; INGV_Ischia-161; INGV_Ischia-162; INGV_Ischia-163; INGV_Ischia-164; INGV_Ischia-165; INGV_Ischia-166; INGV_Ischia-167; INGV_Ischia-168; INGV_Ischia-169; INGV_Ischia-170; INGV_Ischia-171; INGV_Ischia-172; INGV_Ischia-173; INGV_Ischia-174; INGV_Ischia-175; INGV_Ischia-176; INGV_Ischia-177; INGV_Ischia-178; INGV_Ischia-179; INGV_Ischia-180; INGV_Ischia-181; INGV_Ischia-182; INGV_Ischia-183; INGV_Ischia-184; INGV_Ischia-185; INGV_Ischia-186; INGV_Ischia-187; INGV_Ischia-188; INGV_Ischia-189; INGV_Ischia-190; INGV_Ischia-191; INGV_Ischia-192; INGV_Ischia-193; Ischia, Italy; Ischia volcano; LATITUDE; levelling; LONGITUDE; Surveying benchmark; UTM Easting, Universal Transverse Mercator; UTM Northing, Universal Transverse Mercator; UTM Zone, Universal Transverse Mercator
    Type: Dataset
    Format: text/tab-separated-values, 2405 data points
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  • 2
  • 3
    Publication Date: 2020-11-18
    Description: The Pomici di Avellino eruption is the Plinian event of Vesuvius with the highest territorial impact. It affected an area densely inhabited by Early Bronze Age human communities and resulted in the long- term abandonment of an extensive zone surrounding the volcano. Traces of human life beneath the eruption products are very common throughout the Campania Region. A systematic review of the available archaeological data, the study of geological and archaeological sequences exposed in excava- tions, and the reconstruction of the volcanic phenomena affecting single sites has yielded an under- standing of local effects and their duration. The archaeological and volcanological analyses have shown that the territory was rapidly abandoned before and during the eruption, with rare post-eruption at- tempts at resettlement of the same sites inhabited previously. The definition of the distribution and stratigraphy of alluvial deposits in many of the studied sequences leads us to hypothesise that the scarce presence of humans during phases 1 and 2 of the Middle Bronze Age in the wide area affected by the eruption was due to diffuse phenomena of remobilisation of the eruption products, generating long- lasting alluvial processes. These were favoured by the deposition of loose fine pyroclastic material on the slopes of the volcano and the Apennines, and by climatic conditions. A significant resettlement of the territory occurred only hundreds of years after the Pomici di Avellino eruption, during phase 3 of the Middle Bronze Age. This study show the role of volcanic and related phenomena from a Plinian event in the settlement dynamics of a complex territory like Campania.
    Description: Published
    Description: 231-244
    Description: 1V. Storia eruttiva
    Description: 5V. Dinamica dei processi eruttivi e post-eruttivi
    Description: 6V. Pericolosità vulcanica e contributi alla stima del rischio
    Description: JCR Journal
    Keywords: Plinian eruption Eruption impact ; Volcanoclastic mass flow ; Vesuvius ; Bronze Age ; Eruption impact
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
    Publication Date: 2020-12-03
    Description: Small landslides to large debris flows and debris avalanches affected the Neapolitan territory surrounding the active volcanoes of the area: Vesuvius, Campi Flegrei and Ischia. Their variable intensity explosive eruptions produced significant quantities of loose pyroclastic material on the slopes of the volcanoes and of the surrounding reliefs. Remobilization processes of this material occurred during and soon after large explosive eruptions, although their intensity and frequency decreased during inter-eruptive periods. The intensity of these processes varies with the different eruptions and is strongly dependent on availability of fine ash in proximal and distal areas. The areas involved varies from hundreds to millions square meters. The syn-eruptive debris flows of the Vesuvius 472 AD eruption are described in detail. Huge ground uplift of the central part of the Ischia resurgent caldera generated debris/rock avalanches, which likely caused tsunamis. Archaeological sites affected by syn-eruptive debris flows have been selected to show the effects of their deposition. Hydraulic risk and risk mitigation actions, emergency management and preparedness measures will be discussed in one of the areas mostly affected by recent debris flows. At Ischia the characteristics of debris/rock avalanches and lahars related to the resurgence and to the reactivation of volcanism will be discussed.
    Description: Published
    Description: 1-53
    Description: 1V. Storia eruttiva
    Description: 5V. Processi eruttivi e post-eruttivi
    Description: JCR Journal
    Keywords: volcanism ; landslides ; debris flows ; debris avalanches ; hydraulic risk ; risk mitigation ; 04.08. Volcanology ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
    Publication Date: 2020-12-14
    Description: We reconstructed the late Holocene relative sea-level (RSL) evolution of the ancient harbour of Naples, one of the largest coastal conurbations in the Mediterranean. We carried out multiproxy investigations, coupling archaeological evidence with biological indicators. Our data robustly constrain 2000 yr of non-monotonic changes in sea level, chiefly controlled by the complex volcano-tectonic processes that characterize the area. Between ∼200 BC and AD ∼0, a subsidence rate of more than ∼1.5 mm/yr enhanced the postglacial RSL rise, while negligible or moderate land uplift 〈 ∼0.5 mm/yr triggered a RSL stabilization during the Roman period (first five centuries AD). This stabilization was followed by a post-Roman enhancement of the sea-level rise when ground motion was negative, attested by a subsidence rate of ∼0.5 to ∼1 mm/yr. Our analysis seems to indicate very minor impacts of this nonmonotonic RSL evolution on the activities of the ancient harbour of Naples, which peaked from the third century BC to the second century AD. After this period, the progressive silting of the harbour basin made it impossible to safely navigate within the basin, leading to the progressive decline of the harbour.
    Description: Published
    Description: 284-298
    Description: 1V. Storia eruttiva
    Description: JCR Journal
    Keywords: Geo-archeology ; Sea-level changes ; Ancient harbours ; Naples ; Volcano-tectonics ; Mediterranean Sea ; Parthenope-Neapolis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
    Publication Date: 2020-10-16
    Description: The Royal Observatory of Vesuvius (ROV) is the oldest volcanological observatory in the world. It was founded in 1841 by the King of the Two Sicilies, Ferdinand II of Bourbons, in order to study the volcanic activity of Vesuvius for the early warning of the population. Currently, it hosts a permanent exhibition where the visitors are introduced to volcanism and its hazards, the monitoring systems of active volcanoes, and the history of Mt. Vesuvius and the Vesuvius Observatory. It provides an integration between conventional and innovative exhibitions, by implementing the wonderful collections of rocks and minerals, old books, historical instruments, documents and paintings, with computer graphics and multimedia installations. After a long period of about one year – when renovation works were closed – the ROV reopened with a magnificent ceremony, where the rooms of the Museum also hosted an art and photography exhibition by the students of the Karlsruhe Art Academy, the Architecture Faculty of the Zurich University and the Hamburg Academy. The ROV reopening to the public fits in a much wider process of requalification of the Vesuvius region, where, the dissemination of the knowledge of the volcano will promote the proper use of its territory, not only to blow up all the potential of the area, but also to prepare future generations for a more conscious and fruitful use of the resources offered by the area.
    Description: Published
    Description: 114-131
    Description: 2TM. Divulgazione Scientifica
    Description: N/A or not JCR
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
    Publication Date: 2021-07-14
    Description: Archaeological exavations,undertaken since 2004 for the construction of the new Naples subway
    Description: Published
    Description: 542-557
    Description: 1V. Storia eruttiva
    Description: JCR Journal
    Keywords: A.D.79 eruption ; compositional data analysis ; geoarchaeology ; 04.08. Volcanology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 8
    Publication Date: 2021-07-14
    Description: Volcanic risk at Vesuvius is one of the highest in the world due to the ~670,000 inhabitants living in the Red Zone, the area exposed to both pyroclastic flows and tephra fallout, to be evacuated before renewal of any eruptive activity. The national emergency plan for Vesuvius builds its risk zonation on a scenario similar to the last sub-Plinian eruption, which occurred in 1631. This study aims at providing new insights on the geometry of the caldera associated with this historical eruption. The impact of past Vesuvius eruptions on present-day soil CO2 concentration has been investigated by means of an extended geochemical survey carried out for identifying the circulation pathways of hydrothermal fluids inside the volcano. We performed 4,018 soil CO2 concentration measurements over the whole Somma-Vesuvius volcanic complex, covering an area of 50 km2. Besides relatively low values, the results show a significant spatial CO2 concentration heterogeneity over Somma-Vesuvius ranging from the atmospheric value (~400 ppm) up to ~24,140 ppm. The summit of Vesuvius shows an area with anomalous CO2 concentrations well matching the crater rim of the 1906 eruption. Along the cone flanks, secondary CO2 anomalies highlight a roughly circular preferential pathway detected along 8 radial profiles at distances between ~840 m and ~1,150 m from the bottom of the present-day crater resulting from the last eruption in 1944. In depth review of the available literature highlights an agreement between this circle-like shaped anomaly and the 1631 sub-Plinian eruption caldera boundary. Indeed, based on the historical chronicles the depression produced by the 1631 eruption had a diameter of 1,686 m, whereas the CO2 circular anomaly indicates a diameter of 1,956 m. Finally, the results were compared with a 3-D density model obtained from a recent gravity survey that corroborates both the literature and the CO2 data in terms of potential buried structure at the base of the Vesuvius cone.
    Description: Published
    Description: 43-56
    Description: 1V. Storia eruttiva
    Description: JCR Journal
    Keywords: Somma-Vesuvius ; soil CO2 concentration ; 1631 sub-Plinian eruption. ; carbon dioxide ; caldera. ; 04.08. Volcanology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 9
    Publication Date: 2020-11-12
    Description: Rapporto Tecnico n°1 della task force operativa EMERSITO++ (INGV) che descrive le campagne sismiche ed elettromagnetiche condotte nei comuni di Casamicciola Terme e di Lacco Ameno a seguito del terremoto di Ischia del 21 Agosto 2017.
    Description: INGV
    Description: Published
    Description: 4T. Sismologia, geofisica e geologia per l'ingegneria sismica
    Description: 1SR. TERREMOTI - Servizi e ricerca per la Società
    Description: N/A or not JCR
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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  • 10
    Publication Date: 2020-11-23
    Description: The 501 m deep hole of the Campi Flegrei Deep Drilling Project, located west of the Naples metropolitan area and inside the Campi Flegrei caldera, gives new insight to reconstruct the volcanotectonic evolution of this highly populated volcano. It is one of the highest risk volcanic areas in the world, but its tectonic structure, eruptive history, and size of the largest eruptions are intensely debated in the literature. New stratigraphic and 40Ar/39Ar geochronological dating allow us to determine, for the first time, the age of intracaldera deposits belonging to the two highest magnitude caldera-forming eruptions (i.e., Campanian Ignimbrite, CI, 39 ka, and Neapolitan Yellow Tuff, NYT, 14.9 ka) and to estimate the amount of collapse. Tuffs from 439 m of depth yield the first 40Ar/39Ar age of ca. 39 ka within the caldera, consistent with the CI. Volcanic rocks from the NYT were, moreover, detected between 250 and 160 m. Our findings highlight: (i) a reduction of the area affected by caldera collapse, which appears to not include the city of Naples; (ii) a small volume of the infilling caldera deposits, particularly for the CI, and (iii) the need for reassessment of the collapse amounts and mechanisms related to larger eruptions. Our results also imply a revaluation of volcanic risk for the eastern caldera area, including the city of Naples. The results of this study point out that large calderas are characterized by complex collapse mechanisms and dynamics, whose understanding needs more robust constraints, which can be obtained from scientific drilling.
    Description: Published
    Description: 4836-4847
    Description: 5V. Dinamica dei processi eruttivi e post-eruttivi
    Description: JCR Journal
    Keywords: Campi Flegrei caldera, Campania Ignimbrite, volcanic risk, Naples ; 04.08. Volcanology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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