Manifestation of large geomagnetic storms in ionosphere of East Asia

E. B. Romanova; A. V. Tashchilin; O. M. Pirog; N. M. Polekh; G. A. Zherebtsov; Jiankui Shi; Xiao Wang

doi:10.1117/12.783543

14 February 2008 Manifestation of large geomagnetic storms in ionosphere of East Asia

E. B. Romanova, A. V. Tashchilin, O. M. Pirog, N. M. Polekh, G. A. Zherebtsov, Jiankui Shi, Xiao Wang

Proceedings Volume 6936, Fourteenth International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics; 69361E (2008) https://doi.org/10.1117/12.783543
Event: Fourteenth International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 2007, Buryatia, Russian Federation

Abstract

The ionospheric response to a geomagnetic disturbance is a complex set of events caused by both the upper atmosphere and ionosphere parameters and characteristics of the magnetosphere and solar wind. A situation is particularly complicated during the large geomagnetic storm. We present the results derived from investigating of the ionospheric response to large geomagnetic storms with the values of index Dst < (-200 ÷ -300nT) observed during two last cycles of solar activity. Our analysis of the behavior of the ionosphere is based on using the measurements from a network of ionospheric stations located at different latitudes in the longitudinal sector of 60-150°E. Also there are presented the results of numerical modeling of ionospheric parameters during the geomagnetic storm on April, 2000δ which show a good agreement of calculations and measurements. As the results modeling illustrates prolonged negative ionospheric disturbances observed during geomagnetic storms may be produced by the change of thermosphere composition.

Citation Download Citation

E. B. Romanova, A. V. Tashchilin, O. M. Pirog, N. M. Polekh, G. A. Zherebtsov, Jiankui Shi, and Xiao Wang "Manifestation of large geomagnetic storms in ionosphere of East Asia", Proc. SPIE 6936, Fourteenth International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 69361E (14 February 2008); https://doi.org/10.1117/12.783543

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