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Bismuth Oxide Nanoparticles in the StratospherePlatey grains of cubic Bi2O3, alpha-Bi2O3, and Bi2O(2.75), nanograins were associated with chondritic porous interplanetary dust particles W7029C1, W7029E5, and 2011C2 that were collected in the stratosphere at 17-19 km altitude. Similar Bi oxide nanograins were present in the upper stratosphere during May 1985. These grains are linked to the plumes of several major volcanic eruptions during the early 1980s that injected material into the stratosphere. The mass of sulfur from these eruptions is a proxy for the mass of stratospheric Bi from which we derive the particle number densities (p/cu m) for "average Bi2O3 nanograins" due to this volcanic activity and those necessary to contaminate the extraterrestrial chondritic porous interplanetary dust particles via collisional sticking. The match between both values supports the idea that Bi2O3 nanograins of volcanic origin could contaminate interplanetary dust particles in the Earth's stratosphere.
Document ID
19990010757
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Rietmeijer, Frans J. M.
(New Mexico Univ. Albuquerque, NM United States)
Mackinnon, Ian D. R.
(Queensland Univ. Saint Lucia, Australia)
Date Acquired
August 19, 2013
Publication Date
March 25, 1997
Publication Information
Publication: Journal of Geophysical Research
Publisher: American Geophysical Union
Volume: 102
Issue: E3
ISSN: 0148-0227
Subject Category
Geophysics
Report/Patent Number
Paper-96JE03989
Funding Number(s)
CONTRACT_GRANT: NAGw-3626
CONTRACT_GRANT: NAG5-4441
Distribution Limits
Public
Copyright
Other

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