Physics
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jatp...41..279v&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 41, Mar. 1979, p. 279-292.
Physics
Atmospheric Circulation, Energy Transfer, Gravity Waves, Thermosphere, Wave Interaction, Heat Transfer, Internal Energy, Momentum Transfer, Propagation Velocity, Vertical Distribution, Vertical Motion
Scientific paper
A statistical estimate of the energy transported by medium-scale gravity waves has been developed by analysis of a selected sample. The waves originated from the troposphere and their vertical energy flux at 120 km had a mean value of one ten-thousandth J/sq m/sec. This paper presents a theoretical study of the propagation of the waves within the thermosphere and evaluates the transfer of heat and momentum from the waves to the mean atmosphere. The main results are: the vertical velocity associated to the waves has a mean value of 20 m/s in the F1 region; the energy deposition takes place essentially between 120 and 200 km and the mean rate of increase of the atmosphere internal energy is 5 times 10 to the negative 10th J/cu m/sec; and the observable interaction is essentially a momentum transfer.
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