Abstract
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 f 0 F2 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 f 0 F2 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.
Similar content being viewed by others
REFERENCES
Stanislawska, I., Gulyaeva, T. L., and Hanbaba, R., Ionospheric Despatch Center in Europe, Phys. Chem. Earth (C), 1999, vol. 24, no. 4, pp. 355–357.
Hanbaba, R., COST271 Final Report, SRC Warsaw, 1999.
Rothkaehl, H., Stanislawska, I., Leitinger, R., and Tulunay, Y., Application of a Trough Model for Telecommunication Purposes, Phys. Chem. Earth (C), 2000, vol. 25, no. 4, pp. 315–318.
Stanisławska, I. and Rothkaehl, H., PLES model in the plasmapause diagnostic, Adv. Space Res., (in press) 2001.
Bradley, P.A., Juchnikowski, G., Rothkaehl, H., and Stanislawska, I., Instantaneous maps of the European middle and high-latitude ionosphere for HF propagation assessments, Adv. Space Research, 1998, vol. 22, no. 6, pp. 861–864.
Münch, J.W, Brown, H.J., Pilkingon, G.R, Sagalyn, R,C, and Wildmann, P.J.L., Thermal Electron Densities and Temperatures In The Days Side Cusp Region, JATP, 1977, vol. 39, p. 699.
Muldrew, D.B., Observations Of The Cusp With Topside Sounders, The polar cups, NATO ASI Series, D. Reidel Publish Comp. Dordrecht, Holland, 1985, p. 377.
Forster, J.C., Holt, J.M., Kelly, J.D., Wickwar, V.B., High resolution of electric field and F-region plasma parameters in the cleft Ionosphere, The polar cups, NATO ASI Series, D. Reidel Publish Comp. Dordrecht, Holland, 1985, p. 349.
Rothkaehl, H., HF plasma emission detected in cusp region at ionospheric altitude, Adv. Space. Res., 1999, vol. 23, no. 10, p. 1769.
Stanislawska, I., Juchnikowski, G., Hanbaba, R., Rothkaehl, H., Sole, G., and Zbyszyński, Z., COST 251 Recommended Instantaneous Mapping Model of Ionospheric Characteristics, Phys. Chem. Earth (C), 2000, vol. 25, no. 4, pp. 291–294.
Mikhailov, A.V., Mikhailov, V.V., and Skoblin, M.G., Monthly median f 0 fF2 nad M(3000)F2 ionospheric model over Europe, Annali di Geofisica, 1996, vol. 39, pp. 791–805.
Rothkaehl, H., Błęcki, J., Stasiewicz, K., and Eriksson, A., HF-VLF Plasma Waves Excitation During Geomagnetic Storm In The Polar Cusp Region, proc. ESA Cluster II Workshop, Multiscale and Multipoint Plasma Measurements, London, 1999, SP, 449, 331, 2000.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rothkaehl, H., Stanisławska, I., Blecki, J. et al. Low Altitude Cusp–Cleft Region Signatures of Strong Geomagnetic Disturbances. Cosmic Research 41, 340–344 (2003). https://doi.org/10.1023/A:1025197324595
Issue Date:
DOI: https://doi.org/10.1023/A:1025197324595