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The static shape of yield-strength fluids slowly emplaced on slopes

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dc.contributor.authorOsmond, D
dc.contributor.authorGriffiths, Ross
dc.date.accessioned2015-12-13T23:16:24Z
dc.date.available2015-12-13T23:16:24Z
dc.date.issued2001
dc.date.updated2015-12-12T08:48:01Z
dc.description.abstractA theoretical solution is presented for the static three-dimensional shape of a fluid having a finite yield strength after it is extruded slowly from a small source on an inclined plane. The solution is compared to the shapes obtained in laboratory experiments in which slurries of kaolin in polyethylene glycol wax were ejected, slowly and in small incremental volumes, onto a slope. This study is aimed at understanding the shape of highly silicic lava flows, such as large rhyolite flows which occur on steep mountain sides or on gentle slopes, and the role of a finite yield strength in governing the slow spreading and the final static shape. The results indicate that it is possible to obtain an estimate of the yield strength of a fluid which is emplaced under such circumstances, using only horizontal aspect ratios and the slope of the underlying ground.
dc.identifier.issn0148-0227
dc.identifier.urihttp://hdl.handle.net/1885/89396
dc.publisherAmerican Geophysical Union
dc.sourceJournal of Geophysical Research
dc.subjectKeywords: extrusion; fluid flow; geometry; lava dome; lava flow; slope; strength
dc.titleThe static shape of yield-strength fluids slowly emplaced on slopes
dc.typeJournal article
local.bibliographicCitation.lastpage16,250
local.bibliographicCitation.startpage16,241
local.contributor.affiliationOsmond, D, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationGriffiths, Ross, College of Physical and Mathematical Sciences, ANU
local.contributor.authoruidOsmond, D, u9602436
local.contributor.authoruidGriffiths, Ross, u8300081
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor040314 - Volcanology
local.identifier.absfor040602 - Glaciology
local.identifier.absfor040403 - Geophysical Fluid Dynamics
local.identifier.ariespublicationMigratedxPub19407
local.identifier.citationvolume106
local.identifier.scopusID2-s2.0-0034800863
local.type.statusPublished Version

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