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Annales Geophysicae An open-access journal of the European Geosciences Union
Ann. Geophys., 20, 647-653, 2002
https://doi.org/10.5194/angeo-20-647-2002
© Author(s) 2002. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
31 May 2002
Predicted and observed characteristics of small-scale field-aligned irregularities generated in the F-region by low power HF heating
E. Kolesnikova, T. R. Robinson, and J. A. Davies Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
Correspondence to: E. Séran (elena.seran@cetp.ipsl.fr)
Abstract. Simultaneous HF scattering from the different regions of the heated volume is used to investigate characteristics of the small-scale field-aligned irregularities in the F-region. Time of growth, decay rate and saturation level for different pump powers are deduced from the observations and are compared with their behaviour predicted by the thermal parametric instability model. As a result, the estimates of the density and of the temperature modifications inside of the irregularities are obtained.

Key words. Ionosphere (ionospheric irregularities)


Citation: Kolesnikova, E., Robinson, T. R., and Davies, J. A.: Predicted and observed characteristics of small-scale field-aligned irregularities generated in the F-region by low power HF heating, Ann. Geophys., 20, 647-653, https://doi.org/10.5194/angeo-20-647-2002, 2002.
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