Publication Abstracts

Balachandran et al. 1977

Balachandran, N.K., W.L. Donn, and D.H. Rind, 1977: Concorde sonic booms as an atmospheric probe. Science, 197, 47-49.

Infrasound generated by the sonic boom from the inbound Concorde supersonic transport is recorded at Palisades, New York (Lamont-Doherty Geological Observatory), as a series of impulses from distances varying from 165 to about 1000 kilometers. Refraction effects determined by temperature and wind conditions return the signal to the surface from both stratospheric (40 to 50 kilometers) and thermospheric (100 to 130 kilometers) levels. The frequency of the recorded signal is a function of the level of reflection; the frequency decreases from impulse stretching as the atmosphere becomes more rarified relative to the sound pressure. The horizontal trace velocity of the signal across the array of instruments is equal to the acoustic velocity at the reflection level. The sonic boom can thus be used to provide temperature-wind parameters at reflection levels estimated from the signal frequency. Daily observed signal variations have indicated significant variations in these parameters.

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BibTeX Citation

  author={Balachandran, N. K. and Donn, W. L. and Rind, D. H.},
  title={Concorde sonic booms as an atmospheric probe},

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RIS Citation

ID  - ba09100s
AU  - Balachandran, N. K.
AU  - Donn, W. L.
AU  - Rind, D. H.
PY  - 1977
TI  - Concorde sonic booms as an atmospheric probe
JA  - Science
VL  - 197
SP  - 47
EP  - 49
ER  -

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