A gravity current model for the May 18, 1980 Mount St. Helens plume
Document Type
Article
Date of Original Version
1-1-1992
Abstract
Observations of the stratospheric plume from the May 18, 1980, Mount St. Helens eruption suggest that it spread in the crosswind direction as an intrusive gravity current, as it was transported downwind. Grain size analyses of the plinian tephra are consistent with this model, suggesting that to distances of many hundreds of kilometers, turbulent atmospheric diffusion played a secondary role in plume spreading and tephra dispersal. Copyright 1992 by the American Geophysical Union.
Publication Title, e.g., Journal
Geophysical Research Letters
Volume
19
Issue
16
Citation/Publisher Attribution
Bursik, M. I., S. N. Carey, and R. S.J. Sparks. "A gravity current model for the May 18, 1980 Mount St. Helens plume." Geophysical Research Letters 19, 16 (1992). doi: 10.1029/92GL01639.
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