Observations of acoustic-gravity waves in the thermosphere following Space Shuttle ascents

Details Observations of acoustic-gravity waves in the thermosphere following Space Shuttle ascents Observations of acoustic-gravity waves in the thermosphere following Space Shuttle ascents

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jatp...56..525j&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 56, no. 4, p. 525-528

Computer Science

Sound

16

Exhaust Emission, Gravity Waves, Rocket Exhaust, Sound Waves, Spacecraft Launching, Thermosphere, Wave Propagation, Atmospheric Sounding, Brunt-Vaisala Frequency, Buoyancy, Doppler Effect, Space Shuttles

Scientific paper

Using an ionospheric Doppler sounder at Havelock, North Carolina, we observed upper atmospheric waves generated by three ascents of the Space Shuttle during 1990-1991. The exhaust plume's initial explosion and subsequent buoyant rise apparently launch acoustic and buoyancy waves, respectively. The buoyancy waves observed close (less than 150 km) to the flight path are shorter period (200s) than the Brunt-Vaisaila period. This may be due to wind-generated Doppler shifts, or alternatively to the waves being ducted on the thermocline.

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