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Theoretical and observed acoustic-gravity waves from explosive sources in the atmosphere

Harkrider, David G. (1964) Theoretical and observed acoustic-gravity waves from explosive sources in the atmosphere. Journal of Geophysical Research, 69 (24). pp. 5295-5321. ISSN 0148-0227. doi:10.1029/JZ069i024p05295.

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A matrix formulation is used to derive the pressure variation for acoustic-gravity waves from an explosive source in an atmosphere modeled by a large number of isothermal layers. Comparison of theoretical and observed barograms from large thermonuclear explosions leads to the following conclusions: (1) The major features on the barogram can be explained by the superposition of four modes, (2) different parts of the vertical temperature structure of the atmosphere control the relative excitation of these modes, (3) a scaled point source is sufficient to model thermonuclear explosions, (4) the observed shift in dominance of certain frequencies with yield and altitude can be explained by means of the empirical scaling laws derived from the direct wave near the explosion, and (5) out to 50° from the source, the observed variation of amplitude with distance can be accounted for by geometrical spreading over a spherical surface.

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Additional Information:© 1964 American Geophysical Union. Manuscript received August 14, 1964. I am grateful to Professor Frank Press for his support and encouragement throughout this study. Many valuable discussions were held with Drs. D. L. Anderson and C. B. Archambeau. Their cooperation and support are acknowledged with gratitude. This research was supported by contract AF-49(638)-1337 of the Air Force Office of Scientific Research as part of the Advanced Research Projects Agency project Vela.
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Air Force Office of Scientific Research (AFOSR)AF-49-(638)-1337
Advanced Research Projects Agency (ARPA), project VelaUNSPECIFIED
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Caltech Division of Geological Sciences1283
Issue or Number:24
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Official Citation:Harkrider, D. G. (1964), Theoretical and observed acoustic-gravity waves from explosive sources in the atmosphere, J. Geophys. Res., 69(24), 5295–5321, doi:10.1029/JZ069i024p05295
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64719
Deposited By: Tony Diaz
Deposited On:24 Feb 2016 18:05
Last Modified:10 Nov 2021 23:34

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