Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 20, issue 5
Articles | Volume 20, issue 5
https://doi.org/10.5194/angeo-20-647-2002
© Author(s) 2002. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-20-647-2002
© Author(s) 2002. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 20, issue 5
31 May 2002
 | 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

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)

How to cite. 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.