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Luongo, Giuseppe
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Luongo, Giuseppe
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Luongo, G.
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- PublicationOpen AccessOn the clustering of seismicity in the Southern Tyrrhenian area(1997-10)
; ; ;Luongo, G.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Mazzarella, A.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy; High-quality shallow, intermediate and deep shocks from the Southern Tyrrhenian area (interval: 1985-1995) are analysed to draw inferences on the complex shape of the underlying Benioff zone. The hypothesis of an active NW-oriented subduction of the lithosphere, generated and stressed by the opening of the Tyrrhenian basin, is confirmed. The fractal behaviour of seismic data in its five-dimensional set (magnitude, time and space) is significantly identified, even if within specific ranges. The light but significant variations of the different fractal dimensions measured during more recent years is explained in terms of a reduction in the fracturing degree of the Southern Tyrrhenian crust.143 163 - PublicationOpen AccessI fondatori della sismologia in Italia nella seconda metà del XIX secolo(2012-12)
; ; ; ;Luongo, G.; Università di Napoli Federico II ;Cubellis, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Obrizzo, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; ; The scientific study of earthquakes received a critical stimulus in 1755, when a disastrous earthquake struck Lisbona on November 1. A significant contribution to this evolution come from Italy, where by the mid-nineteenth century many scintists operated to record, localize and classify the intensity of the earthquakes.178 136 - PublicationOpen AccessHystory of Ischian EarthquakesThe earliest sources on the seismicity of the island of Ischia date back to the Greek colonization of the Island in the eighth century BC. Until the eruption of 1302, seismicity was widespread across the whole Island, while thereafter it was mainly concentrated in its northern part, at the foot of the Monte Epomeo massif. One of the characteristics of earthquakes on Ischia is that they occur very near the surface, since at depths of more than 3 km, due to their high temperatures (> 400 °C), the rock has a ductile as opposed to a fragile behavior, and hence do not fracture and do not gene rate earthquakes. Earthquakes are due to the moving of adjacent blocks separated by a surface of discontinuity known as a fault, along which the relative movement of the two blocks occurs when tectonic forces become stronger than the friction that impeded their movement. After an earthquake, the system needs to reload for the friction to be again overcome and for another earthquake to be thus generated.
106 28 - PublicationOpen AccessConceptual model of shallow magma feeding system for Ischia Island (Italy)(2010-09-06)
; ; ; ; ;Luongo, G.; Dipartimento di Scienze della Terra, Università di Napoli “Federico II" ;Carlino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Cubellis, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Obrizzo, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; ; ; In this study we provide a general structural picture of Ischia island shallow crust to model the processes occurring at shallow depth, by using geological, geophysical, historical seismicity data and analytical structural models of the island (PENTA & CONFORTO, 1951; CUBELLIS & LUONGO, 1998; CUBELLIS et alii, 2004; CARLINO et alii, 2006; PAOLETTI et alii, 2009; VEZZOLI et alii., 2009; SBRANA et alii, 2009). These studies support the hypothesis of the presence of a shallow laccolith, which is responsible of the resurgence of Mt. Epomeo, following the Green Tuff eruption, volcanic activity and seismicity...227 382 - PublicationOpen AccessMacroseismic data: present limits and future possibilities(1993)
; ; ; ;Luongo, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Marturano, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Rinaldis, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; ; 127 106 - PublicationRestrictedManagement of Historical Seismic Data Using GIS: The Island of Ischia (Southern Italy)(2004)
; ; ; ; ; ;Cubellis, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Carlino, S.; Geofisica e Vulcanologia e Universitá Federico II, Dipartimento Geofisica e Vulcanologia ;Iannuzzi, R.; Universita` Federico II, Dipartimento di Geofisica e Vulcanologia ;Luongo, G.; Universita` Federico II, Dipartimento di Geofisica e Vulcanologia ;Obrizzo, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; ; ; ; This paper presents the results of the use of Geographic Information Systems (GIS) in managing information on the effects of earthquakes in historical times on the island of Ischia. The unpublished sources on the Casamicciola earthquake of 28 July 1883 and the extensive bibliography documenting the island’s seismicity from 1228 showed the need to proceed towards a type of data storage that would also allow management of the same data. Application of GIS techniques allowed us to insert, extract, handle, manage and analyse the data for the zoning of seismic damage on the island of Ischia. The end-product consists of information layers, such as maps of isoseismals, the damage, and hazard involved, as well as numerical tables associated to maps. The study was developed using GIS Arc-View 3.2 software (ESRI) and is structured in thematic vectorial levels and rasters. The overlapping themes constitute a cartographic data base of the island. The damaged sites are located on a map at a scale of 1:10,000, with all the information on the 1883 earthquake (total number of houses, number of collapsed houses, collapsed or damaged rooms, photographs, plans of buildings, etc.) being associated to each site. The GIS is structured in such a way as to be able to be integrated with further georeferenced data and with other databases. It is thus able to provide support both for in-depth analyses of the dynamic processes on the island and extend the assessment to other natural risks (volcanic, landslides, flooding, etc.).354 102 - PublicationOpen AccessLa piana campana: un monumento geologico di 5.000 km2 dal tirreno all’appennino(ISPRA, 2013-06-06)
; ; ; ; ; ; ; ; ; ;; Abstract – The Campanian Plain: a geological monument of 5.000 km2 from the Tyrrhenian Sea to the Apennines - The Campanian Plain is the region in Southern Italy which extends between the Apennine Chain and Tyrrhenian Sea over an area of 5,000 km2 from Mt. Massico, in the north, to Sorrento Peninsula in the south of the Plain. The ancient name of this area was Campania Felix. This territory is an extraordinary geological monument characterized by volcanoes, earthquakes, tsunamis, slow ground vertical movements (bradiseism) which generated myths, legends, archeological findings, historical documents. The Campanian Plain is affected by extensional tectonics related to the spreading of the Tyrrhenian Basin. The onset of this process occurred between the Mid–Pliocene and the Early Pleistocene, when large morpho-structural depressions began to develop, giving rise to the Bay of Naples. The whole range of phenomena observed, in particular the recent tectonics and chemism of magmas feeding active volcanoes can be accounted for the local upwelling of the Mantle, the lytosphere plate bending and subsequent collapses. The measure of the collapse in the Campanian Plain, due to the stretching of the crust produced by the Mantle migration, is obtained by the thickness of sediments forming Campanian Plain. These data and the time lapse of the process furnish a value of about 1-2 mm/yr for the velocity of the subsidence during the Quaternary. Coeval to the deformation of this morphostructural depression was the onset of intense magmatic activity with the formation of the polygenic apparatus of Mt. Vesuvius and the volcanic fields of Phlegraean Fields and Ischia Island. In the Phlegrean Fields and Ischia caldera collapses, ignimbrite eruptions, and caldera resurgences occurred; instead at Vesuvius numerous Plinian eruptions were recorded. The most recent eruptions in the Neapolitan area occurred in 1302 at Ischia, 1538 at Phlegrean Fields and 1944 at Vesuvius. At present large fumarolic fields and thermal springs outcrop in several sites, while in the Phlegrean Fields slow oscillations of ground are recorded. The eruptive history of neapolitan volcanoes, the seismic history of Southern Appennines as well as the geological features of Campanian Plain characterize this area as a geological multirisk territory. Thus it is a “laboratory” for volcanic, seismic and hidrogeological risk assessment, from wich to draw lessons for integrated planning of pleasant places in risk areas.70 30 - PublicationRestrictedThe Bay of Naples and its Volcanoes: a geological monumentLa Baia di Napoli si sviluppa lungo la fascia costiera del Tirreno nella regione denominata Piana Campana che si estende per un’area di 5000 km2 tra la catena appenninica e il bacino tirrenico, dal Monte Massico, a nord, alla Penisola Sorrentina, a sud. L’antico nome di quest’area è Campania Felix. Questo territorio è uno straordinario monumento geologico caratterizzato da attività vulcanica, terremoti, tsunami, movimenti verticali del suolo (bradisismo) che hanno generato miti, legende, reperti archeologici e documenti storici. La storia eruttiva dei vulcani napoletani e l’evoluzione dell’Appennino Meridionale e della Piana Campana caratterizzano questo territorio come una struttura a diversi rischi geologici. Perciò quest’area può essere considerata un ‘laboratorio’ per la valutazione dei rischi naturali dalla quale trarre elementi da utilizzare nella pianificazione di luoghi di grande pregio paesaggistico e culturale ad elevato rischio. Lo scopo di questo lavoro è di fornire una descrizione del territorio come un monumento fisico che si è costruito in seguito al verificarsi di processi geologici complessi, e in particolare vulcanici e tettonici che hanno agito negli ultimi 10 Ma. Per raggiungere questo obiettivo è necessario conoscere composizione e proprietà fisiche delle rocce della crosta superiore, la morfologia del territorio e la sua evoluzione, in quanto il paesaggio terrestre è costruito per l’interazione di questi elementi.
64 3 - PublicationOpen AccessThe opening of the natural harbour of Ischia (Italy)(2010-09-06)
; ; ; ; ;Carlino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Cubellis, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Delizia, I.; Dipartimento di Storia e Restauro, Università di Napoli “Federico II” ;Luongo, G.; Dipartimento di Scienze della Terra, Università di Napoli “ Federico II”; ; ; We examine recent and historical sources with a view to reconstructing the circumstances leading in 1854 to the opening of the natural harbour of Ischia, the execution phases of the works and the morphological changes arising. Since the late 17th century Ischia, an active volcanic island, has been a major European destination for spa treatment. It underwent a period of change after the harbour was opened up, which represented not only an outlet towards the mainland but also an important factor of social and cultural aggregation for the island. Our analysis also accounts of the geology of Ischia Harbour, the observations of the current state of the island and issues concerning the increase in volcanic and seismic risk resulting from urban expansion and the increase in tourism since the first half of the 20th century.154 151 - PublicationOpen AccessThe opening of Ischia Harbour (Southern italy): history, geology and natural risk.(2010-10-14)
; ; ; ; ;Carlino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Cubellis, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Delizia, I.; Dip.Storia dell'Archittettura,Università di Napoli "Federico II" ;Luongo, G.; Dip.Scienze della terra-Università di Napoli-"Federico II"; ; ; In this paper we examine recent and historical sources with a view.....152 249
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