Physics
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10.1041w&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 10, Nov. 1983, p. 1041-1044.
Physics
16
Aerosols, Chemical Composition, Particle Size Distribution, Stratosphere, Volcanoes, Auger Spectroscopy, Carbon, Electron Microscopy, Morphology, Spectroscopic Analysis, Sulfuric Acid, U-2 Aircraft
Scientific paper
A NASA U-2 research aircraft flew sampling missions in April, May, July, November, and December 1982 aimed at obtaining in situ data in the stratospheric cloud produced from the March-April 1982 El Chichon eruptions. Post flight analyses provided information on the aerosol composition and morphology. The particles ranged in size from smaller than 0.05 m to larger than 20 m diameter and were quite complex in composition. In the April, May, and July samples the aerosol mass was dominated by magmatic and lithic particles larger than about 3 m. The submicron particles consisted largely of sulfuric acid. Halite particles, believed to be related to a salt dome beneath El Chichon, were collected in the stratosphere in April and May. On the July 23 flight, copper-zinc oxide particles were collected. In July, November, and December, in addition to the volcanic ash and acid particles, carbon-rich particles smaller than about 0.1 m aerodynamic diameter were abundant.
Chuan Raymond L.
Woods David C.
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