Large Scale Experiments on Volcanic Processes (EOS)

By Greg A Valentine

University at Buffalo, SUNY (UB)

Download (PDF)

Licensed under

Published on


Some of the least understood and most hazardous geologic processes involve complex multiphase flows, particularly those related to explosive volcanic eruptions. These phenomena inherently involve a wide range of characteristic length and time scales, as well as processes that are coupled across those scales in a range of flow regimes. For example, a pyroclastic density current's (pyroclastic flows and surges) behavior is governed in a complex way by the interactions between individual particles (∼10–4 to 101 meters, ∼10–1 to 101 seconds) and by turbulent mixing with surrounding air (∼10–2 to 102 meters, 1 to 102 seconds). Material properties within individual flows can vary over huge ranges; for example, when ascending magma interacts with groundwater in a volcanic conduit, the viscous melt and liquid water are transformed into brittle glass and steam.

Published 15 March 2011.

Cite this work

Researchers should cite this work as follows:

  • Greg A Valentine (2011), "Large Scale Experiments on Volcanic Processes (EOS),"

    BibTex | EndNote