Large-scale experiments on volcanic processes

Greg A. Valentine, Costanza Bonadonna, Irene Manzella, Amanda Clarke, Pierfrancesco Dellino

Research output: Contribution to journalArticle

5 Scopus citations


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 10 1 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.

Original languageEnglish (US)
Pages (from-to)89-90
Number of pages2
Issue number11
StatePublished - Mar 28 2011

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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    Valentine, G. A., Bonadonna, C., Manzella, I., Clarke, A., & Dellino, P. (2011). Large-scale experiments on volcanic processes. Eos, 92(11), 89-90.