F. Barberi's research while affiliated with National Institute of Geophysics and Volcanology and other places

Publications (105)

Article
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The Rome region contains several sites where endogenous gas is brought to the surface through deep-reaching faults, creating locally hazardous conditions for people and animals. Lavinio is a touristic borough of Anzio (Rome Capital Metropolitan City) that hosts a Country Club with a swimming pool and an adjacent basement balance tank. In early Sept...
Article
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The area of Central Italy around Rome contains natural gas discharging zones and several others where quarrying or mining excavation removed the impervious superficial layers allowing a free hazardous discharge to the surface of endogenous gas. These gas manifestations are mostly located above buried structural highs of fractured Mesozoic limestone...
Conference Paper
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In 2011 and the first half of 2012 Santorini experienced its first seismo-volcanic unrest since 1950, as detected by the permanently installed monitoring networks and a large number of campaign measurements. The unrest was characterized by small magnitude but intense seismic activity, significant uplift and inflation deformation rates, and changes...
Article
Turrialba volcano lies in the southern sector of the Central American Volcanic Front (CAVF) in Costa Rica. The geochemistry of major and trace elements, and Sr and Nd isotopes of a selected suite of volcanic rocks ranging in composition from basaltic andesite to dacite and belonging to the last 10 ka of activity of Turrialba volcano is described, t...
Article
In 2011-2012 Santorini was characterized by seismic-geodetic-geochemical unrest, which was unprecedented since the most-recent eruption occurred in 1950 and led to fear an eruption was imminent. This unrest offered a chance for investigating the processes leading to volcanic reactivation and the compositional characteristics of involved magma. We h...
Article
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La Fossa quiescent volcano and its surrounding area on the Island of Vulcano (Italy) are characterized by intensive, persistent degassing through both fumaroles and diffuse soil emissions. Periodic degassing crises occur, with marked increase in temperature and steam and gas output (mostly CO2) from crater fumaroles and in CO2 soil diffuse emission...
Article
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Most of the internal Afar is floored by a thick Plio-Quaternary lava-pile known as the Afar Stratoid Series. Its significance, although crucial for the understanding of the Afar structual evolution, has not been clarified yet. It has been alternatively interpreted as oceanic crust produced during the early stages of Afar spreading or as the express...
Article
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Gas hazard was evaluated in the three most important cold gas emission zones on the flanks of the qui-escent Colli Albani volcano. These zones are located above structural highs of the buried carbonate base-ment which represents the main regional aquifer and the main reservoir for gas rising from depth. All extensional faults affecting the limeston...
Article
La Fossa crater on Vulcano Island is quiescent since 1890. Periodically it undergoes "crises" characterized by marked increase of temperature (T), gas output and concentration of magmatic components in the crater fumaroles (T may exceed 600 °C). During these crises, which so far did not lead to any eruptive reactivation, the diffuse CO 2 soil degas...
Chapter
The Colli Albani volcanic area is affected by huge degassing of likely magmatic or mantle origin, as suggested by the gas He isotopic composition. Gas rising from a buried calcareous aquifer generates several surface emissions and accumulates also in permeable layers at various depths, from 10 to 350 m, beneath impervious formations. When reached b...
Chapter
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Although controversy exists about the age of its most recent eruption (either 36 ka or <23 ka). Colli Albani volcano is unanimously considered to be quiescent and not exinct. During the Holocene. several lahars were generated by overflows from Albano crater lake up to the fourth century BCE. when the Romans excavated a drainage tunnel to keep the l...
Article
The Colli Albani volcanic area is affected by huge degassing of likely magmatic or mantle origin, as suggested by the gas He isotopic composition. Gas rising from a buried calcareous aquifer generates several surface emissions and accumulates also in permeable layers at various depths, from 10 to 350 m, beneath impervious formations. When reached b...
Article
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Il domino vulcanico laziale a nord del fiume Tevere ospita una estesa falda di interesse regionale sostenuta da una potente sequenza di depositi appartenenti alle unità alloctone di facies toscana e tolfetana. Published Piacenza 4.5. Degassamento naturale
Article
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A volcanic risk perception study of the population residing near Vesuvius was carried out between May and July, 2006. A total of 3600 questionnaires with 45 items were distributed to students, their parents and the general population. The largest number of surveys (2812) were distributed in the 18 towns of the Red Zone, the area nearest to the volc...
Article
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1] In order to test the potentiality of soil CO 2 diffuse degassing measurements for the study of underground mass and heat transfer in geothermal systems detailed surveys were performed at Latera caldera, which is an excellent test site, because of the abundant available subsurface data. Over 2500 measurements of soil CO 2 flux revealed that endog...
Conference Paper
The city of Rome lies between the two Quaternary volcanic complexes of Mts. Sabatini, to the North, and of Alban Hills to the South. Both these volcanic areas are characterized by zones with a huge endogenous degassing and several accidents have occurred to people and animals in the last 20 years. CO2 is the main component (up to 98 vol.%) of the g...
Article
A borehole drilled at Fiumicino (Rome) down to only 27 m depth in a zone where no gas emission at the surface was known, caused a gas blowout from a pressurized gas pocket confined beneath a clay cover. Gas slowly diffused from the borehole within superficial permeable sand. Seven persons living in three ground floor flats of a near building had to...
Article
L’area vulcanica dei Colli Albani è caratterizzata dalla presenza di manifestazioni gassose associate ad alti strutturali del basamento carbonatico rivelati da anomalie gravimetriche positive (Di Filippo e Toro, 1980). Si tratta di emissioni di gas freddi, composti prevalentemente di CO2, con minori quantità di H2S, N2 e CH4 (Giggenbach et al., 198...
Article
New data on the recent activity of the Albano crater lake and on Colli Albani degassing. Stratigraphic and sedimentological studies of the Ciampino plain (Tavolato Succession) and particularly of an ad hoc excavated trench near the archaeological site of Lucrezia Romana, confirm that Holocene phreatomagmatic eruptions have occurred from Lake Albano...
Article
Preceded by four days of intense seismicity and marked ground deformation, a new eruption of Mt. Etna started on 17 July and lasted until 9 August 2001. It produced lava emission and strombolian and phreatomagmatic activity from four different main vents located on a complex fracture system extending from the southeast summit cone for about 4.5 km...
Chapter
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Campi Flegrei is one of the most densely populated active volcanic areas of the world. It consists of a complex structure with a multicollapse caldera and many postcaldera, explosive, mostly monogenetic vents. The last eruption was in 1538 (Mt. Nuovo). Progressive reduction of eruption energy has accompanied migration of the vents toward the center...
Article
Cotopaxi, the highest active volcano on earth and one of the most dangerous of Ecuador is constituted by a composite cone made up of lava and tephra erupted from the summit crater. The activity of the present volcano begun with large-volume plinian eruptions followed by a succession of small-volume lava emissions and pyroclastic episodes which led...
Article
The magnetic and gravimetric methods of investigation have been applied to the central sector of the Eolian arc, combined with geovolcanological data, for the purpose of defining the structural framework in which the volcanism developed. The processing of the magnetic and gravimetric data involved 3D modeling of the volcanic bodies and the applicat...
Article
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An analysis of the reported information on 132 historical phreatic events indicates that most of these (115) were not followed by a magmatic or phreatomagmatic eruption. Only in 18 cases precursory phenomena are reportedly lacking, whereas they are recognized for the majority (72) of the considered cases. These precursors have been analyzed as a fu...
Article
The active crater of Guagua Pichincha volcano is located only about 10 km west of Quito, the capital city of Ecuador. Archeological and historical records confirm that, in the last few millennia, human communities were repeatedly affected by volcanic eruptions in this region. Tephrostratigraphic studies and 14C datings indicate that the eruptive hi...
Article
The structural evolution of Campi Flegrei (CF) has been investigated by combining on land and offshore gravimetric and aeromagnetic data, with surface geological and volcanological evidences and subsurface drilling information. A relatively small (4-5 km across) collapsed circular structure, produced by eruption along a ring fracture, has been iden...
Article
Algorithms for evaluating digital terrain models (DEMs) and elevation moments such as slope, aspect, relief, and curvature are discussed. Significant new applications based on the elaboration and display of such data are presented. The results show that the processed data can be used for environmental protection and to identify topography-dependent...
Article
An Italian volcanological mission visited the Nevado del Ruiz volcano a few weeks before the catastrophic eruption of November 13, 1985. Fumarolic gases of Arenas crater were sampled and analysed and proved to be basically a mixture of CO2 and SO2, indicative of a direct magmatic input to the surface environment. The existence of high lahar risk wa...
Article
THE goal of evaluating the risks related to the reactivation of a quiescent volcano requires the reconstructions of the eruptive history of the volcano, the construction therefrom of a behavioural model of the volcano so as to define the 'maximum expected event9 and the subsequent quantitative models allowing reliable simulation of such an event to...
Article
On August 21, 1986, a gas cloud issued from Lake Nyos in Cameroon killed over 1700 people. An Italian technical mission reached the area seven days later and obtained the first field evidences of the catastrophe. On the basis of observations and measurements in the field and of samples collected, the origin of the gas outburst is attributed to a ph...
Article
Grain-size and component analyses have been carried out on pyroclastic deposits of three well-known explosive eruptions of Vesuvius: those of 79 A.D., 1631 and 1906. These eruptions cover a wide energy spectrum, from Plinian to Strombolian, and each includes a transition from a magmatic to a well-documented and clearly distinguishable phreatomagmat...
Article
Extensive sampling, major element chemistry on over 300 samples and K-Ar radiometric dating have been carried out on the Ecuadorian Upper Tertiary–Quaternary volcanoes. The results show important space–time variations of the volcanic activity, between Late Miocene time and the present. In Late Miocene time a continuous volcanic belt, located approx...
Article
A brief account is given about the mission of the Italian team to the crater Arenas of Nevado del Ruiz (Colombia), a few weeks before the catastrophic eruption of November 13, 1985, along with the recommendations provided to the local authorities and some subsequent consideration. -Authors
Article
A systematic petrographic and chemical study of chronologically ordered lava samples collected during the 1983 Etna eruption, has shown minor fluctuating variations in crystallinity and chemistry, apparently correlated with variations in the rate of effusion. Comparison with the compositional variations observed in the lavas emitted during the 1971...
Article
The essential features of the ongoing potential pre-eruptive crisis at the Phlegraean Fields begun in August 1982 are summarized and the main problems faced by scientists responsible of volcanic hazards evaluation in such a densely populated area are discussed.
Article
Subsurface geothermal exploration has considerably added to our knowledge of the Latera volcanic complex. A syenitic body is located about 2 km below the present-day surface; K-Ar data point a 0.9 Ma age. The primary magma was a silica-saturated trachyte; undersaturated, hauyne-bearing products are found near the carbonatic wall-rocks and have been...
Article
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Volcanological and petrological data suggest that the Phlegraean Fields volcanic activity has been fed, at least in the last 10,500 years, by a not-refilled magma chamber where trachytic residual liquids were produced by fractionation of a trachybasaltic magma. Using estimated volumes of the erupted products andP–T data obtained through petrologica...
Article
A systematic petrological and chemical study of the volcanic products of the Phlegraean Fields has been accomplished based on the new stratigraphy described by Rosi et al. (this volume). The majority of Phlegraean rocks belong to the potassic series of the Roman province. The compositional spectrum ranges from trachybasalts to latites, trachytes, a...
Article
The 21 papers in this book address the problem of explosive volcanism - a subject that has been the focus of intense research in recent years. Studies of explosive volcanism are important for both basic research into geologic processes and practical application of volcanic phenomena. Models of magma evolution in shallow chamber generally require an...
Article
The term ‘Plinian’ has been widely used1–4 to describe continuous gas-blast eruptions of large magnitude a typical example5, of which is the AD 79 eruption of Vesuvius which destroyed Pompei and the surrounding region. We develop a new model here for the AD 79 event that explains the complete Plinian eruptive episode including pyroclastic fall, pyr...
Article
The volcanic history of Somma-Vesuvius indicates that salic products compatible with an origin by fractionation within a shallow magma chamber have been repeatedly erupted («Plinian» pumice deposits). The last two of these eruptions, (79 A.D. and 3500 B.P.) were carefully studied. Interaction with calcareous country rocks had limited importance, an...
Article
Investigations of Rb-Sr systematics of basalts from the Afar depression (Ethiopia) indicate the presence of a heterogeneous mantle source region. The Sr isotopic compositions of the basalts from the Afar axial and transverse ranges identify source regions which are enriched in LIL elements and radiogenic Sr (axial ranges) and others which are relat...
Article
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Erta Ale and Boina are two volcanic areas in northern Afar rift where a complete suite of products from mildly alkalic transitional basalts to peralkaline rhyolites have been erupted in very recent Quaternary time. Subaphyric lava samples of both localities, representing the entire sequence of erupted magmas, have been selected for a mineralogical...
Article
Petrological, mineralogical and chemical data of 46 ejecta deriving from the sedimentary basement beneath Somma-Vesuvius volcano are reported. The ejecta samples were collected in pumice deposits formed during two major Plinian eruptions. One of these pumice deposits was formed during the well-known 79 A.D. eruption, and the other one — the so-call...
Chapter
The results of volcanological and petrochemical studies, MT surveys, passive seismic studies and a new gravity and magnetic interpretation relatively to the Phlegraean Fields area, Italy, are presented. The evaluation of the geothermal model of the area and a preliminary assessment of the local geothermal resources are presented.
Chapter
The main results of the first phase of the geothermal exploration of Somma-Vesuvius active volcanic area (including geologic, volcanological, hydrogeological, hydrogeochemical, gravimetric, aeromagnetic, geoelectrical and reflection seismic surveys) are summarized and used for the elaboration of a preliminary geo thermal model. The heat source shou...
Article
Zusammenfassung Die Secca-Fawn-l-Bohrung, die 1968 von der Gulf Oil Company am westlichen Rand des südlichen Roten Meeres abgeteuft wurde, erreichte in 1400 m Tiefe eine Folge von jungmiozänen bis altpliozänen submarinen Basaltlagen, die mindestens 600 m mächtig sind. Es wurden homogene Basaltfragmente aus den Cuttings auf ihren Hauptelementgehalt...
Article
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A geological, chemical and petrographical study of the Campanian ignimbrite, a pyroclastic flow deposit erupted about 30,000 years ago on the Neapolitan area (Italy), is reported. The ignimbrite covered an area of at least 7,000 km2; it consists of a single flow unit, and the lateral variations in both pumice and lithic fragments indicate that the...
Chapter
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The Afar depression (Ethiopia and Gibuti area) is the site of the junction of three major rift zones: two oceanic (Red Sea and Gulf of Aden) and a continental one (East African rift). Approaching Afar some modifications are observed in the structure as well as in the petrology of each rift branch. Gulf of Aden is characterized by WNW spreading segm...
Article
The paper is a synoptic overview on the hazards related to volcanic eruptions and associated phenomena, on the methods of volcanic risk estimation and on the state of the art of the surveillance of active volcanoes. The volcanic hazard is evaluated with regard to the tectonic setting of volcanoes, the composition and viscosity of magmas, the charac...
Article
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Volcanological and petrological evidence, 87Sr/86Sr data, the linear correlation between pairs of residual elements (e.g. Th, U, Zr, Hf, La, Ce, Ta) indicate that the rock series from mildly alkaline (transitional) basalt to pantellerite erupted in recent Quaternary times at the Boina volcanic centre, can be entirely explained in terms of fractiona...
Article
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The northern Afar Rift is a region where the earliest stages of the splitting of a continent and creation of new oceanic crust can be observed. New oceanic-type crust is at present being emplaced along the axis of the rift. The axis is offset at several places; offsets of the western margin of the rift (scarp of the Ethiopian Plateau) correspond to...
Article
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Article
A summary of the available data on the peralkaline rocks of S. Pietro and S. Antioco islands, together with, new chemical analyses and some preliminary K-Ar ages are reported. Peralkaline rocks occur as ignimbrites, lava flows and domes usually deeply affected by hydrothermal alteration. Pantelleritic varieties are found within the dominantly come...