Physics
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.6543m&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, July 1, 1985, p. 6543-6552.
Physics
27
Accelerometers, Satellite-Borne Instruments, Thermosphere, Wind Measurement, Magnetic Disturbances, Mesosphere, Satellite Orbits
Scientific paper
A new thermospheric wind measurement technique is reported, which is based on a satelite electrostatic triaxial accelerometer (SETA) system capable of accurately measuring accelerations in the satellite's in-track, cross-track, and radial directions. Cross-track winds measured on 74 orbits between 170 and 210 km during a five-day period of mostly high geomagnetic activity are analyzed to demonstrate the potential contributions of SETA data to studies of thermospheric dynamics. On the basis of an analysis which depends upon alignment of null points in the cross-track winds, the data are shown to be consistent with a two-cell polar circulation pattern characterized by a main flow parallel to the 1600/0400 geomagnetic loacal time meridian and return flows in the late morning and late evening sectors.
Forbes Jeffrey M.
Marcos Frank A.
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