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Snapshots of a Volcano Eruption Simulation

Visualization Credits: Amit Chourasia, Visservices, SDSC/UCSD

Science Advisor: Darcy Ogden, SIO/UCSD

Simulation/Data Credits: Darcy Ogden and Ken Wohletz, LANL

Acknowledgements: Simulated with CFDLib software (Theoretical Division, LANL)
This work was supported by funding from Geophysics and Planetary Physics, LANL and NSF OCI-0503944

Description: Eruptive conduits feeding volcanic jets and plumes are connected to the atmosphere through volcanic vents that, depending on their size and 3D shape, can alter the dynamics and structure of these eruptions. The host rock comprising the vent, in turn, can collapse, fracture, and erode in response to the eruptive flow field. These visualizations illustrate results from fully coupled numerical simulations of high speed, multiphase volcanic mixtures erupting through erodible, visco-plastic host rocks. This work explores the influence of different host rock rheologies, computational approximations, and eruptive conditions on the development of simulated volcanic jets. The movies show the dependence of lithic segregation in the plume on eruption pressure. Host rock and erupted ash mix into the center of eruptions with moderate to low pressure, i.e., less expansion. Host rock is entrained into the outer regions of eruptions with higher pressure, and fine ash mixes throughout the column.

Watch the dissemination movie [QuickTime, ~200MB]

Below are several visualizations produced during the project. Click on an image to view the HD movie.

High Viscosity

Note: To download or view a video, click on its image.

High Viscosity, Eruption Pressure 100x, 6.0 sec High Viscosity, Eruption Pressure 50x, 8.0 sec


Video size: ~92 MB


Video size: ~105 MB

High Viscosity, Eruption Pressure 25x, 6.0 sec High Viscosity, Eruption Pressure 10x, 8.0 sec


Video size: ~64 MB


Video size: ~91 MB

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Low Viscosity

Note: To view or download a video, click on its image.

Low Viscosity, Eruption Pressure 100x, 8.0 sec Low Viscosity, Eruption Pressure 50x, 7.12 sec


Video size: ~78 MB


Video size: ~103 MB

Low Viscosity, Eruption Pressure 25x, 6.0 sec Low Viscosity, Eruption Pressure 10x, 8.0 sec


Video size: ~83 MB


Video size: ~91 MB

Low Viscosity, Eruption Pressure 1x, 6.44 sec  


Video size: ~63 MB

 

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Eruption Pressure

Note: To view or download a video, click on its image.

Eruption Pressure 2.5 mpa, Time 6 sec Eruption Pressure 1.0 mpa, Time 6 sec


Video size: ~43 MB


Video size: ~35 MB

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