Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cosre..41..340r&link_type=abstract
Cosmic Research, v. 41, Issue 4, p. 340-344 (2003).
Physics
Scientific paper
The polar cusp being a region of the free access of the solar wind into the inner magnetosphere is also the site of turbulent plasma flow. The cusp area at low altitudes acts like a focus of a variety type of instability and disturbances from different regions of the Earth. Daily f0F2 frequencies are discussed regarding the cusp position. The high time resolution wave measurements together with electron and ion energetic spectra measurements registered on the board the Freja satellite and Magion-3 and the electron density at the peak of f0F2 layers collected from ground-based ionosonde measurements were used to study the response of ionospheric plasma within the cusp-cleft region to the strong geomagnetic storm. In this paper we present the response of the ionospheric plasma to the disturbed conditions seen in the topside wave measurements and in the ionospheric characteristics maps obtained from the ground-based VI network. The need of the cusp feature model for radio communication purposes is advocated.
Blecki Jan
Rothkaehl Hanna
Stanisławska Iwona
Zbyszynski Z.
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