Civetta, Lucia and D'Antonio, Massimo and Gasparini, Paolo (2006) Thermal model of the Vesuvius magma chamber. [Pubblicazione in rivista scientifica]
Il contenuto (Full text) non è disponibile all'interno di questo archivio.| Tipologia del documento: | Pubblicazione in rivista scientifica |
|---|---|
| Lingua: | English |
| Titolo: | Thermal model of the Vesuvius magma chamber |
| Autori: | Autore Email 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, |
| 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, |
| 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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