Physics
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10.1033g&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 10, Nov. 1983, p. 1033-1036.
Physics
20
Ashes, Atmospheric Composition, Particle Size Distribution, Stratosphere, Volcanoes, Particulate Sampling, Photomicrographs
Scientific paper
Volcanic ash particles collected from the stratosphere after the March/April, 1982 explosive eruption of El Chichon volcano, Mexico, were mostly 2-40 micron vesicular shards of silicic volcanic glass that varied in abundance, at 16.8-19.2 km altitude, from 200 per cu m (30-49 deg N lat.) in May to 1.3 per cu m (45-75 deg N) in October. At the minimum, the ash cloud covered latitudes 10-60 deg N in July and 10 deg S-75 deg N in October. In May and July, ash particles were mostly free, individual shards (and clusters of shards) but, by October, were intimately associated with liquid droplets (presumably, sulfuric acid). In May 1982, the total stratospheric burden of ash was at least 240 tons (2.2 x 10 to the 8th g) although the total ash injected into the stratosphere by the eruption was probably 480-8400 tons.
Clanton U. S.
Gabel E. M.
Gooding James L.
Warren John L.
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