ISSN:
1573-1626
Keywords:
geomagnetic storm
;
Fourier formalism
;
ionosphere F2–layer
;
meteor wind
;
diurnal and semidiurnal tides
Source:
Springer Online Journal Archives 1860-2000
Topics:
Architecture, Civil Engineering, Surveying
,
Geosciences
,
Physics
Notes:
Abstract The response of the critical frequency of the ionosphere F2–layer, described by its main Fourier components (daily constant, “diurnal” and “semidiurnal waves”) and the lower thermosphere dynamics to the geomagnetic storms in July 1991 and February 1992 is studied. The daily constant displays a negative response, however, the magnitude of reaction depends on the season and latitude. The amplitudes of “diurnal” and “semidiurnal waves” increase during a geomagnetic storm, as this enhancement is very strong at high latitudes in winter. The prevailing neutral wind, especially the zonal wind, shows an inclination to decrease during the geomagnetic storm (the effect is more distinct in summer). The amplitudes of diurnal and semidiurnal tides also demonstrate a tendency toward reduction during high geomagnetic activity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1023300919664
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