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2.3.4 Extraterrestrial Particles in the Stratosphere

Published online by Cambridge University Press:  12 April 2016

D.E. Brownlee ,
D.A. Tomandl  and
P.W. Hodge
D.E. Brownlee
Affiliation:
Dept. of Astronomy, University of Washington, Seattle, WA
D.A. Tomandl
Affiliation:
Dept. of Astronomy, University of Washington, Seattle, WA
P.W. Hodge
Affiliation:
Dept. of Astronomy, University of Washington, Seattle, WA

Extract

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Over the past several years we have collected 2µm to 30µm particles from the stratosphere using high volume air sampling techniques. In 1970 and 1971 we flew balloon experiments to 34 km, sampling particles from 1.1 × 104 m3 of ambient air. Beginning in March 1974 we have flown 100 hours of sampling time on a NASA U-2 aircraft yielding a sampling volume of 9.3 × 104 m3. In both programs particles are collected by inertial deposition from a 200 ms−1 airstream on to clean surfaces coated with thick films of 500,000 centistokes silicone oil.

Type
2 In Situ Measurements of Interplanetary Dust
Information
International Astronomical Union Colloquium , Volume 31: Interplanetary Dust and Zodiacal Light , 1976 , pp. 279 - 283
Copyright
Copyright © Springer-Verlag 1976

References

Brownlee, D.E., Hörz, F., Tomandl, D.A., and Hodge, P.W. 1975A. Physical properties of interplanetary grains in IAU Colloquium no. 25, the Study of Comets (in press).CrossRefGoogle Scholar
Brownlee, D.E., Blanchard, M.B., Cunningham, G.C., Beauchamp, R.H. and Fruland, R. 1975B, Criteria for identification of ablation debris from primitive meteoric bodies, J. Geophys. Res. (in press).CrossRefGoogle Scholar
Cameron, A.G.W., 1973, Interstellar grains in Museums? in IAU symposium 52, Interstellar Dust and Related Topics, D. Reidel.Google Scholar
Fuchs, L.H., Olsen, E. and Jensen, K.J., 1973, Smithsonian Contr. to the Earth Sciences, No. 10.Google Scholar
Jedwab, J. 1971 La magnetite de la meteorite D’Orgueil, ICARUS, 15, p. 319.Google Scholar