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dc.contributor.authorBalmforth, Neil J.  Concept link
dc.contributor.authorBurbidge, A. S.  Concept link
dc.contributor.authorCraster, R. V.  Concept link
dc.contributor.authorSalzig, J.  Concept link
dc.contributor.authorShen, A.  Concept link
dc.date.accessioned2005-11-18T19:05:22Z
dc.date.available2005-11-18T19:05:22Z
dc.date.issued2000-09-08
dc.identifier.citationJournal of Fluid Mechanics 403 (2000): 37-65en
dc.identifier.urihttps://hdl.handle.net/1912/155
dc.descriptionAuthor Posting. © Cambridge University Press, 2000. This article is posted here by permission of Cambridge University Press for personal use, not for redistribution. The definitive version was published in Journal of Fluid Mechanics 403 (2000): 37-65, doi:10.1017/S0022112099006916.
dc.description.abstractThe dynamics of expanding domes of isothermal lava are studied by treating the lava as a viscoplastic material with the Herschel–Bulkley constitutive law. Thin-layer theory is developed for radially symmetric extrusions onto horizontal plates. This provides an evolution equation for the thickness of the fluid that can be used to model expanding isothermal lava domes. Numerical and analytical solutions are derived that explore the effects of yield stress, shear thinning and basal sliding on the dome evolution. The results are briefly compared with an experimental study. It is found that it is difficult to unravel the combined effects of shear thinning and yield stress; this may prove important to studies that attempt to infer yield stress from morphology of flowing lava.en
dc.description.sponsorshipThe financial support of an EPSRC Advanced Fellowship is gratefully acknowledged by R.V. C. N. J. B. was partially supported by the NSF Grant OCE-9616017 and an EPSRC Visiting Fellowship Grant GR/M50409.en
dc.format.extent1102860 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherCambridge University Pressen
dc.relation.urihttps://doi.org/10.1017/S0022112099006916
dc.subjectIsothermal lava domesen
dc.titleVisco-plastic models of isothermal lava domesen
dc.typeArticleen
dc.identifier.doi10.1017/S0022112099006916


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