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Isothermal dynamics of channeled viscoplastic lava flows and new methods for estimating lava rheology

Robertson, Jesse; Kerr, Ross

Description

This study analyses the influence of a viscoplastic lava rheology on the dynamics of lava flows. Using a multigrid-based augmented Lagrangian scheme, we find a numerical solution for the flow of a Bingham fluid in a rectangular channel. The numerical results show that an internal viscoplastic rheology significantly modifies the velocity distribution within a lava flow through the development of plug regions whose size is determined by the magnitude of the yield strength. The flow rate, maximum...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/38003
Source: Journal of Geophysical Research
DOI: 10.1029/2011JB008550

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