Civetta, Lucia and D'Antonio, Massimo and Gasparini, Paolo (2006) Thermal model of the Vesuvius magma chamber. [Pubblicazione in rivista scientifica]

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Tipologia del documento: Pubblicazione in rivista scientifica
Lingua: English
Titolo: Thermal model of the Vesuvius magma chamber
Autori:
AutoreEmail
Civetta, Lucia[non definito]
D'Antonio, Massimo[non definito]
Gasparini, Paolo[non definito]
Autore/i: DE LORENZO S.; DI RENZO V.; CIVETTA L.; M. D'ANTONIO; GASPARINI P.
Data: 2006
Numero di pagine: 0
Dipartimento: Scienze fisiche
Numero identificativo: 10.1029/2006GL026587, 2006
Titolo del periodico: GEOPHYSICAL RESEARCH LETTERS
Editore: American Geophysical Union:2000 Florida Avenue Northwest:Washington, DC 20009:(800)966-2481, (202)462-6900, EMAIL: service@agu.org, INTERNET: http://www.agu.org, Fax: (202)328-0566
Data: 2006
Volume: 33
Numero: L17302
Intervallo di pagine: pp. 1-5
Numero di pagine: 0
Parole chiave: Vesuvius, Thermal model, Magma chamber
Numero identificativo: 10.1029/2006GL026587, 2006
Depositato il: 20 Ott 2010 08:01
Ultima modifica: 30 Apr 2014 19:42
URI: http://www.fedoa.unina.it/id/eprint/6538

Abstract

A thermal modeling of the Vesuvius is presented, based on its magmatic and volcanic history. A 2D numerical scheme has been developed to evaluate the heat transfer inside and around a magma body, the latent heat of crystallization and the inputs of magma from the asthenosphere to a crustal reservoir. Assuming a ratio >1 between velocities of magma ascending in the conduit and magma laterally displaced in the reservoir, the results indicate that, after 40 ka, the reservoir is vertically thermally zoned. As a consequence it hosts magma batches that can individually differentiate, mix and be contaminated by the crust, and produce the spectrum of isotopic compositions of the Vesuvian products. The thermal model reproduces the geothermal gradient and the brittle-ductile transition (250–300°C) at 6 km of depth (the maximum depth of earthquake foci) only after 0.5–1 Ma, implying a long lived magma chamber below the volcano.

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