Physics
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.1891c&link_type=abstract
Journal of Geophysical Research, vol. 84, May 1, 1979, p. 1891-1897. Research supported by the Bundesminsterium für Forschung u
Physics
1
Atmospheric Composition, Atmospheric Temperature, Auroral Zones, Gravity Waves, Temperature Effects, Kinetic Energy, Magnetic Storms, Satellite Observation
Scientific paper
The kinetic temperature and neutral composition data obtained from the Aeros B neutral atmosphere temperature experiment and the neutral and ion mass spectrometer show spatial structures characteristic of medium scale gravity waves with a wavelength in the range of several hundred kilometers. These waves are associated with auroral activity, and their spatial structure reflects the time history of the auroral electrojet. The medium scale gravity waves tend to propagate to mid-latitudes on the nightside. On the dayside their range is limited to high latitudes. Gravity waves are carriers of auroral energy to middle and low latitudes where they may cause irreversible changes in temperature via viscous dissipation. Since auroral activity occurs frequently, it is suggested that this energy reaches the mid-latitude region of the thermosphere much more frequently than is indicated by planetary magnetic indices.
Chandra Sharat
Krankowsky Dieter
Laemmerzahl P.
Spencer Nelson W.
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