Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/11766
DC Field | Value | Language |
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dc.date.accessioned | 2018-04-24T07:58:55Z | en |
dc.date.available | 2018-04-24T07:58:55Z | en |
dc.date.issued | 2017-07-28 | en |
dc.identifier.uri | http://hdl.handle.net/2122/11766 | en |
dc.description | This article has been accepted for publication in Geophysical Journal Internationa ©: The Authors 2017. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Uploaded in accordance with the publisher's self-archiving policy. | en |
dc.description.abstract | Thermal gradients due to magma dynamics in active volcanic areas may affect the emanating power of the substrate and the background level of radon signal. This is particularly effective in subvolcanic substrates where intense hydrothermal alteration and/or weathering processes generally form hydrous minerals, such as zeolites able to store and release great amounts of H2O(up to ∼ 25 wt.%) at relative low temperatures. To better understand the role played by thermally induced devolatilization reactions on the radon signal, a new experimental setup has been developed for measuring in real time the radon emission from a zeolitized volcanic tuff. Progressive dehydration phenomena with increasing temperature produce radon emissions two orders of magnitude higher than those measured during rock deformation, microfracturing and failure. In this framework, mineral devolatilization reactions can contribute significantly to produce radon emissions spatially heterogeneous and non-stationary in time, resulting in a transient state dictated by temperature gradients and the carrier effects of subsurface gases. Results from these experiments can be extrapolated to the temporal and spatial scales of magmatic processes, where the ascent of small magma batches from depth causes volatile release due to dehydration phenomena that increase the radon signal from the degassing host rock material | en |
dc.language.iso | English | en |
dc.relation.ispartof | Geophysical Journal International | en |
dc.relation.ispartofseries | /211 (2017) | en |
dc.subject | Magma chamber processes | en |
dc.subject | Volcanic gases | en |
dc.title | The imprint of thermally induced devolatilization phenomena on radon signal: implications for the geochemical survey in volcanic areas | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.description.pagenumber | 558-571 | en |
dc.subject.INGV | 04.08. Volcanology | en |
dc.identifier.doi | 10.1093/gji/ggx314 | en |
dc.description.obiettivoSpecifico | 3V. Proprietà dei magmi e dei prodotti vulcanici | en |
dc.description.obiettivoSpecifico | 6A. Geochimica per l'ambiente | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Mollo, Silvio | en |
dc.contributor.author | Tuccimei, Paola | en |
dc.contributor.author | Galli, Gianfranco | en |
dc.contributor.author | Iezzi, Gianluca | en |
dc.contributor.author | Scarlato, Piergiorgio | en |
dc.contributor.department | Università di Roma "La Sapienza", Dipartimento di Scienze della Terra | en |
dc.contributor.department | Università Roma Tre, Dipartimento di Scienze | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Università G. d’Annunzio, Dipartimento di Ingegneria and Geologia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Università di Roma "La Sapienza" | - |
crisitem.author.dept | Università Roma Tre, Dipartimento di Scienze | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Università degli studi G. D'annunzio, Chieti Pescara, Italy | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.orcid | 0000-0001-8601-8313 | - |
crisitem.author.orcid | 0000-0002-8647-4308 | - |
crisitem.author.orcid | 0000-0003-1933-0192 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
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ggx314.pdf | 3.18 MB | Adobe PDF | View/Open |
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