Ionospheric disturbances over Alma-Ata during the October-November 2003 magnetic storms

Details Ionospheric disturbances over Alma-Ata during the October-November 2003 magnetic storms Ionospheric disturbances over Alma-Ata during the October-November 2003 magnetic storms

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgra..11009s35g&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue A9, CiteID A09S35

Physics

Radio Science: Ionospheric Physics (1240, 2400)

Scientific paper

The ionospheric effects of the great geomagnetic storms of 30-31 October and 20-21 November 2003 observed over Alma-Ata (43.25°N, 76.92°E) were studied experimentally using ground-based ionosondes. The observations showed a number of unusual (for the Alma-Ata location) ionospheric phenomena during the active phase of the geomagnetic storms. It is a very high F2 layer (h'F >= 490 km), an anomalous formation of the E, E2, and F1 layers at nighttime, and the appearance of auroral-type sporadic E layers. Processes of interaction of energetic neutrals with the upper atmosphere modeled by Bauske et al. (1997) for magnetically disturbed conditions seem to explain the phenomena of ionization of F1 and E regions at night.

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