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dc.contributor.authorBarth, Anna
dc.contributor.authorEdmonds, Marie
dc.contributor.authorWoods, Andrew
dc.date.accessioned2019-01-22T00:30:45Z
dc.date.available2019-01-22T00:30:45Z
dc.date.issued2019-01-29
dc.identifier.issn2045-2322
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/288295
dc.description.abstractStrombolian volcanic explosions are commonly attributed to the rise and burst of conduit-filling gas slugs. The magmas associated with strombolian activity, however, are typically not only volatile-rich but also highly crystalline, with mush regions in the shallow plumbing system, where an exsolved volatile phase may also be abundant. Through analogue experiments, we explore a new mechanism to form gas slugs and strombolian explosions. A steady flux of gas is supplied to the base of a particle-rich liquid layer, generating a localised gas intrusion, which initially grows through plastic deformation. Once the pressure in the intrusion overcomes the effective tensile strength of the particle pack, a localised channel opens, allowing gas to propagate upwards. As the pressure in the intrusion falls, the gas pocket collapses. The continued supply of gas leads to the formation of a new intrusion, and the cycle repeats. With higher gas fluxes, continuous channelised gas flow occurs. Highly crystalline shallow portions of basaltic conduits may act as a flow valve, transforming a steady gas flux into a series of discrete gas slugs which cause explosions.
dc.format.mediumElectronic
dc.languageeng
dc.publisherSpringer Science and Business Media LLC
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleValve-like dynamics of gas flow through a packed crystal mush and cyclic strombolian explosions.
dc.typeArticle
prism.issueIdentifier1
prism.publicationDate2019
prism.publicationNameSci Rep
prism.startingPage821
prism.volume9
dc.identifier.doi10.17863/CAM.35611
dcterms.dateAccepted2018-11-29
rioxxterms.versionofrecord10.1038/s41598-018-37013-8
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-01-29
dc.contributor.orcidEdmonds, Marie [0000-0003-1243-137X]
dc.contributor.orcidWoods, Andrew [0000-0002-5098-9940]
dc.identifier.eissn2045-2322
rioxxterms.typeJournal Article/Review
pubs.funder-project-idNERC (via University of Leeds) (RGEVEA100399)
cam.issuedOnline2019-01-29
cam.orpheus.successThu Jan 30 10:53:24 GMT 2020 - The item has an open VoR version.
rioxxterms.freetoread.startdate2100-01-01


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International