TY - JOUR
T1 - Large-scale experiments on volcanic processes
AU - Valentine, Greg A.
AU - Bonadonna, Costanza
AU - Manzella, Irene
AU - Clarke, Amanda
AU - Dellino, Pierfrancesco
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
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U2 - 10.1029/2011EO110001
DO - 10.1029/2011EO110001
M3 - Article
AN - SCOPUS:79952914469
SN - 0096-3941
VL - 92
SP - 89
EP - 90
JO - Eos
JF - Eos
IS - 11
ER -