Physics
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982georl...9..219b&link_type=abstract
Geophysical Research Letters, vol. 9, Mar. 1982, p. 219-222. NSF-supported research.
Physics
14
Auroral Electrojets, Mesopause, Solar Activity Effects, Wind Effects, Wind Profiles, Cross Correlation, Data Acquisition, Extrapolation, Magnetic Measurement, Radar Measurement
Scientific paper
It is shown that a significant correlation exists between auroral electrojet intensity variations at 110-115 km and neutral zonal wind field fluctuations at 85-90 km. An enhancement in electrojet activity appears to lead to an enhanced westward flow in the underlying wind field. The magnetically unsettled period of the study, corresponding to a period of minor magnetic activity, exhibited zonal wind activity enhancements on the order of tens of meters/sec, and, for the hours-days time scale of the fluctuations examined, it appears that wind field variations may lag behind the electrojet variations by between two and four hours. Because auroral electrojet intensity is well correlated with solar activity, an extrapolation of the results presented may make possible the postulation of a causal relationship between mesospheric wind fluctuations and short-term solar activity.
Balsley Ben B.
Carter D. A.
Ecklund Warner L.
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