Statistics – Computation
Scientific paper
Aug 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.6281l&link_type=abstract
Journal of Geophysical Research, vol. 87, Aug. 1, 1982, p. 6281-6290.
Statistics
Computation
21
Air Land Interactions, Atmospheric Effects, Gravity Waves, Lamb Waves, Traveling Ionospheric Disturbances, Volcanoes, Atmospheric Pressure, Dynamic Response, Ionospheric Electron Density, Propagation Velocity, Surface Waves, Wave Excitation
Scientific paper
We present evidence that shows some aspects of the global atmospheric dynamic responses to the eruption of Mount St. Helens on May 18, 1980. Although events such as volcanic eruptions may excite a number of acoustic-gravity wave modes in the atmosphere, the observed surface pressure perturbations and distant ionospheric perturbations can be explained only in terms of propagation of Lamb modes with a horizontal propagation velocity slightly above 300 m/s. Results from model computations show good agreements with the observational data. Ground level pressure perturbations created by this event are only slightly smaller than those created by the historical Great Siberian Meteor.
Holt O.
Jones Bernard T.
Kato Shoji
Klostermeyer Juergen
Leitinger Reinhart
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