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A gravity current model for the May 18, 1980 Mount St. Helens plumeObservations 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.
Document ID
19920071986
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bursik, M. I.
(JPL, Pasadena, CA; New York, State University Buffalo, United States)
Carey, S. N.
(Rhode Island, University Kingston, United States)
Sparks, R. S. J.
(Bristol, University United Kingdom)
Date Acquired
August 15, 2013
Publication Date
August 21, 1992
Publication Information
Publication: Geophysical Research Letters
Volume: 19
Issue: 16 A
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
92A54610
Funding Number(s)
CONTRACT_GRANT: NSF EAR-86-07336
CONTRACT_GRANT: NATO-CRG-0096/91
Distribution Limits
Public
Copyright
Other

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