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FUTUREVOLC Partner UNIVBRIS

FUTUREVOLC Partner UNIVBRIS Jeremy Phillips, Mark Woodhouse, Andrew Hogg to develop and provide physics-based theoretical models of plume dynamics and tephra dispersion to help understand the new observations/monitoring data and apply the results operationally.

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FUTUREVOLC Partner UNIVBRIS

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  1. FUTUREVOLC Partner UNIVBRIS Jeremy Phillips, Mark Woodhouse, Andrew Hogg to develop and provide physics-based theoretical models of plume dynamics and tephra dispersion to help understand the new observations/monitoring data and apply the results operationally

  2. Steady plume model 1. Comparison with webcam 2. Comparison with lightning 5 minute period – 60 images data courtesy of Sonja Behnke (Uni. South Florida) 3. Web-tool (www.plumerise.bris.ac.uk)

  3. Steady models not appropriate for eruptions with time varying source conditions. Unsteady plume models Our analysis of a recent unsteady plume model (Scase & Hewitt 2012) shows an underlying pathology in the mathematical description. Ongoing work is addressing this issue. The model will then be extended to volcanic plumes in a wind field in an attempt to describe unsteadiness in the source. Buoyancy-driven intrusions Wind & buoyancy are important for long-range tephra dispersal. Buoyancy forces are not usually considered in dispersion models. We’re developing a shallow-layer model of buoyancy-driven intrusions in a wind field. Model by Chris Johnson (Uni. Bristol) Ongoing work to compare with observations and develop operational tools.

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