Physics
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976georl...3..161b&link_type=abstract
Geophysical Research Letters, vol. 3, Mar. 1976, p. 161-164.
Physics
Diurnal Variations, Exosphere, Orbit Perturbation, Wind Profiles, Explorer 24 Satellite, Perigees, Satellite Orbits, Time Dependence
Scientific paper
The diurnally averaged velocity and the diurnal variation of the zonal wind in the height region between 540 and 610 km are determined by analyzing changes in the orbital inclination of the Explorer 24 balloon satellite. The method of analysis is described in detail, and previous results obtained by the same method are discussed. It is found that the diurnally averaged velocity of the zonal wind in the examined region is nearly zero, indicating that the rotational velocity of the exosphere is either slightly less than or equal to the rotational velocity of the earth. The diurnal component of the exospheric zonal wind is shown to have an amplitude of 90 (plus or minus 65) m/sec and a maximum from West to East at about 2400 hr local time. Both the amplitude and phase of this diurnal component are found to be in very close agreement with the theoretical calculations of Blum and Harris (1975).
Blum Peter W.
Schuchardt G. H. K.
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