Magma storage and ascent at Lipari Island (Aeolian archipelago, Southern Italy) at 223–81 ka: the role of crustal processes and tectonic influence     

Corrado Di Martino  Maria Luce Frezzotti  Federico Lucchi  Angelo Peccerillo  Claudio A. Tranne  Larryn W. Diamond 《Bulletin of Volcanology》2010,72(9):1061-1076

Fluid inclusion studies together with volcanological and petrochemical data allow reconstruction of the magma feeding system of basaltic-andesitic to andesitic activity during the oldest and intermediate stages of development of Lipari Island (223–81 ka). A major magma storage zone is active during the overall investigated time span at depths of 22 km, close to the crust-mantle Moho transition, at which mantle-derived mafic magmas tend to accumulate due to neutral buoyancy conditions. Beneath central-type volcanoes (M. Mazzacaruso, M. S.Angelo, M. Chirica-Costa d’Agosto), a shallower magma reservoir is located within the upper crust at 5.5–3.5 km, associated with a major lithological discontinuity. For fissural-type volcanoes (Timpone Ospedale, Monterosa, M. Chirica), tectonic structures are suggested to influence further magma ascent and storage at mid-crustal depths (∼14 km), with no ponding at shallower levels. Partial crustal melting processes at the roofs of the deep magma reservoirs (∼17 km) are invoked to explain the origin of cordierite-bearing lavas beneath M. S.Angelo and M. Chirica-Costa d’Agosto volcanoes, which were active during the intermediate stages of development of Lipari (105–81 ka). The generation of felsic anatectic melts in the lower crust could have created density and rheologic barriers to impede the passage of mafic melts and promote their ponding, with influence on the subsequent evolution of Lipari volcano.  相似文献   

Sea gravity data in the Gulf of Naples. A contribution to delineating the structural pattern of the Phlegraean Volcanic District     

Giovanna Berrino  Gennaro Corrado  Umberto Riccardi 《Journal of Volcanology and Geothermal Research》2008

Bathymetric and gravity surveys were carried out from 1988 to 1994, in the Gulf of Naples (Southern Italy) to offshore extend the already existing Bouguer anomaly map. In order to improve the knowledge of the structural setting beneath the active Neapolitan volcanoes (Vesuvio, Campi Flegrei and Ischia), 862 stations were surveyed within the isobath of 400 m; at the same time, and about 2000 on-land gravity values were also collected. A new Bouguer anomaly map spanning the whole volcanic region was drawn from the final data set. Gravity anomalies were referred to the new absolute gravity station in Naples and computed according to 1980 Geodetic Reference System. Finally, a density value of 2200 kg/m³ was used in the computation of the Bouguer and terrain effects. We carried out the inversion of the gravity anomalies adopting a 2.5-D modelling along selected profiles crossing the investigated area. The interpretative models were constrained to data obtained from deep wells and other geophysical investigations.  相似文献   

Occurrence of Somma-Vesuvio fine ashes in the tephrostratigraphic record of Panarea,Aeolian Islands     

De Rita Donatella  Dolfi DanielaCimarelli Corrado 《Journal of Volcanology and Geothermal Research》2008

Ash-rich tephra layers interbedded in the pyroclastic successions of Panarea island (Aeolian archipelago, Southern Italy) have been analyzed and related to their original volcanic sources. One of these tephra layers is particularly important as it can be correlated by its chemical and morphoscopic characteristics to the explosive activity of Somma-Vesuvio. Correlation with the Pomici di Base eruption, that is considered one of the largest explosive events causing the demolition of the Somma stratovolcano, seems the most probable. The occurrence on Panarea island of fine ashes related to this eruption is of great importance for several reasons: 1) it allows to better constrain the time stratigraphy of the Panarea volcano; 2) it provides a useful tool for tephrochronological studies in southern Italy and finally 3) it allows to improve our knowledge on the distribution of the products of the Pomici di Base eruption giving new insights on the dispersion trajectories of fine ashes from plinian plumes. Other exotic tephra layers interbedded in the Panarea pyroclastic successions have also been found. Chemical and sedimentological characteristics of these layers allow their correlation with local vents from the Aeolian Islands thus constraining the late explosive activity of Panarea dome.  相似文献   

A parameterized model for local infiltration in two-layered soils with a more permeable upper layer     

Corrado Corradini  Renato Morbidelli  Alessia Flammini  Rao S. Govindaraju 《Journal of Hydrology》2011,396(3-4):221-232

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The holocenic evolution of a stretch of an eastern italian alpine valley     

Corrado Friz  Vigilio Villi  Maria Chiara Turrini 《地球表面变化过程与地形》1995,20(8):747-757

The morphological evolution of a stretch of an alpine valley located in the Eastern Italian Alps is described. This has been conditioned by a great alluvial fan that was formed as a consequence of interconnected events, deriving from large rockfalls which occurred in the late glacial period at the head of the Missiaga–Bordina valley, on the left side of the Agordo basin. The aggradation of the alluvial fan blocked the Cordevole valley south of the Agordo basin and produced a lake that is documented by lacustrine sediments. Age determination by ¹⁴C techniques on wood remnants found in these sediments fixes the life of the lake at between approximately 5880 and 5300 years BP . This represents, indirectly, the age of the main phase of the development of the fan. After the building up of the alluvial fan, an erosional phase began, leading to the formation of the present landscape. A series of illustrations depicts the sequence of the fan's development.  相似文献   

Laboratory experimental check of a conceptual model for infiltration under complex rainfall patterns     

Florisa Melone  Corrado Corradini  Renato Morbidelli  Carla Saltalippi 《水文研究》2006,20(3):439-452

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Fundamental energy and closed space     

Corrado Massa 《Astrophysics and Space Science》2002,282(3):471-475

The existence of the universal quantization law E=n ε E =any energy; n = an integer, ε = the fundamental energy ∼ħ c/R with ħ = the reduced Planck constant, c = the speed of light, R = the curvature radius of the closed cosmological space) is advocated and discussed. A possible connection between ε and the mass of elementary particles is pointed out.  相似文献   

Maximal mass and size of celestial bodies born from superstrings     

Corrado Massa 《Astrophysics and Space Science》2007,310(3-4):209-210

The generalized Buchdahl inequality in the presence of a positive cosmological constant gives rise to a constraint on the mass density of celestial bodies. We find that such a constraint implies an upper bound on the mass and radius of spherical celestial bodies born from macroscopic superstrings. We obtain a maximal mass of about 10¹⁵ solar masses and a maximal radius of about 80 million light years, not far from the observed mass and size of the largest structures in the universe, viz. the superclusters of galaxies.  相似文献   

A simplified model for estimating field‐scale surface runoff hydrographs     

Renato Morbidelli  Corrado Corradini  Rao S. Govindaraju 《水文研究》2007,21(13):1772-1779

The problem of obtaining field‐scale surface response to rainfall events is complicated by the spatial variability of infiltration characteristics of the soil and rainfall. In this paper, we develop and test a simplified model for generating surface runoff over fields with spatial variation in both rainfall rate and saturated hydraulic conductivities. The model is able to represent the effects of local variation in infiltration, as well as the run‐on effect that controls infiltration of excess water from saturated upstream areas. The effective rainfall excess is routed to the slope outlet using a simplified solution of the kinematic wave approximation. Model results are compared to averaged hydrographs from numerically‐intensive Monte–Carlo simulations for observed and design rainfall events and soil patterns that are typical of Central Italy. The simplified model is found to yield satisfactory results at a relatively small computational expense. A proposal to include a simple channel routing scheme is also presented as a prelude to extend this conceptualization to watershed scales. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   

The hermitage of Cerbaiolo (Tuscany,Italy): stability conditions and geomorphological characterization     

Laura Melelli  Corrado Cencetti  Manuela Cecconi  Luciano Faralli  Alessia Vecchietti  Vincenzo Pane 《Environmental Earth Sciences》2016,75(4):322

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