Ionospheric response to AGW propagation detected using GNSS measurements and coherent HF sounding over “Vernadsky” and “Palmer” Antarctic stations
- GNSS diagnostics,
- HF radio sounding,
- TID,
- TEC,
- ionospheric irregularities
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Abstract
The work presents results of the diagnostics of travelling ionospheric disturbances (TIDs) over the Antarctic Peninsula obtained by using two different techniques. The first method is based on ground-based multi-positional GNSS TEC measurements, and the second one is bistatic coherent ionospheric HF radio sounding between “Akademik Vernadsky” and “Palmer” Antarctic stations. A comparison of Doppler frequency shifts of the probe HF signal received at “Palmer” station with the dynamics of TEC variations has been made. Quasi-periodic variations associated with the propagation of TIDs were registered simultaneously in both types of the data. A case study performed in this paper has shown that the parameters of the ionospheric disturbance estimated by two methods are in a good agreement, given a specific choice of ionospheric pierce point (IPP) trajectories of GNSS links near the reflection point of the HF probing signal and TID motion direction collinear to the radiopath and perpendicular to IPP trajectories.
References
- Afraimovich, E. L., Perevalova, N. P. (2006). GPS-monitoring verkhnei atmosfery Zemli [GPS Monitoring of the Earth’s Upper Atmosphere]. Irkutsk: GUNTs RVKh VSNTs SO RAMN. (in Russian).
- Beley, V. S., Galushko, V. G., Yampolski, Y. M. (1995). Traveling ionospheric disturbance diagnostics using HF signal trajectory parameter variations. Radio Science, 30(6), 1739-1752.
- Galushko, V. G., Kashcheyev, A. S., Kashcheyev, S. B. et al. (2007). Bistatic HF diagnostics of TIDs over the Antarctic Peninsula. Journal of Atmospheric and Solar-Terrestrial Physics, 69, 403-410.
- Galushko, V. G., Paznukhov, V. V., Sopin, A. A. et al. (2016). Statistics of ionospheric disturbances over the Antarctic Peninsula as derived from TEC measurements. J. Geophys. Res. Space Physics, 121(4), 3395-3409.
- Grocott, A., Hosokawa, K., Ishida, T. et al. (2013). Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by the HF radar. J. Geophys. Res. Space Physics, 118, 5830-5841.
- Hocke, K., Schlegel, K. (1996). A review of atmospheric gravity waves and travelling ionospheric disturbances: 1982-1995. Ann. Geophys., 14, 917-940.
- Paznukhov, V. V., Galushko, V. G., Reinisch, B. W. (2012). Digisonde observations of AGWs/TIDs with Frequency and Angular Sounding Technique. Advances in Space Research, 49(4), 700-710.
- Sopin, A. O., Zanimonskiy, Y. M., Lisachenko, V. N. et al. (2012). Features of background variations in total electron content of ionosphere over the Antarctic Peninsula. Radio Physics and Radio Astronomy, 17, 49-56. (in Russian).
- Yampolski, Y. M., Zalizovsky, A. V., Lytvynenko, L. M. et al. (2004). Magnetic field variations in Antarctica and the conjugate region (New England) stimulated by cyclone activity. Radio Physics and Radio Astronomy, 9, 130-151. (in Russian).
- Zalizovski, A. V., Yampolski, Y. M. (2007). The spread-F effect as an indicator of troposphere-ionosphere coupling. Radio Physics and Radio Astronomy, 12, 33-42. (in Russian)