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Seminar, Kristen Fauria

January 25 @ 3:00 pm - 5:00 pm MST

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How far, how fast, and how long? Dynamics of volcanic flows

 

Kristen Fauria

 

Volcanic eruptions have widespread impacts on humans and the environment. Forecasting the hazards associated with eruptions requires understanding how eruption products are dispersed in volcanic flows. Here we investigate the dynamics of two volcanic phenomena: pyroclastic density currents and pumice rafts. Pyroclastic density currents are hot, turbulent, particle-laden flows that propagate because they are denser than air and pumice rafts are volumes of porous rock that float on the ocean for days to years. We use scaled laboratory experiments to identify new internal processes and then we build physics-based models that incorporate new fluid dynamics. For both pumice rafts and pyroclastic density currents, we find that small-scale processes and interactions with the environment have big effects on transport distance and longevity. 

When: January 25, 2021
Time: 3:00 PM
Where: Zoom Meeting ID: 986 6687 2801