Isothermal dynamics of channeled viscoplastic lava flows and new methods for estimating lava rheology
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]
|Collections||ANU Research Publications|
|Source:||Journal of Geophysical Research|
|01_Robertson_Isothermal_dynamics_of_2012.pdf||1.96 MB||Adobe PDF|
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