Abstract and keywords
Abstract (English):
Using long-term data from Yakut meridional chain of Yakutsk — Zhigansk — Batagay — Tixie ionospheric stations, we study ionospheric signatures of fast subauroral ion drift. Sharp drops or “falls” of critical frequencies (FCF) of the ionospheric F layer are shown to be one of the main signatures of the development of fast subauroral ion drifts near or at the zenith of the observation station. Comparison between long-term ground-based and satellite measurements indicates that there is good agreement between seasonal variation in the probability of occurrence of FCF derived from ground-based data and subauroral ion drifts derived from DMSP satellite data. Such a coincidence implies that both satellite and ground-based measurement methods register the same phenomenon in the boundary layers of the plasmasphere, namely, the appearance and development of electric fields of magnetospheric origin. The local time for recording of falls of the critical frequency derived from the ground-based data is shown to closely coincide with the appearance time of subauroral polarization streams of plasma according to satellite data. We can therefore conclude that most of the observed FCFs derived from ground-based data refer to intense storms.

subauroral ionosphere, meridional chain of stations, falls of critical frequencies, polarization jet
Publication text (PDF): Read Download

1. Galperin Yu.I., Ponomarev V.N., Zosimova A.G. Direct measurements of the ion drift velocity in the upper ionosphere during a magnetic storm. I. Questions of the methodology and some results of measurements in a magnetic-quiet time. Kosmicheskiye issledovaniya [Cosmic res.]. 1973, vol. 11, no. 2, pp. 273-283. (In Russian).

2. Galperin Yu.I., Ponomarev V.N., Zosimova A.G. Plasma convection in the polar ionosphere. Ann. Geophys. 1974, vol. 30, no. 1, pp. 1-7.

3. Galperin Yu.I., Sivtseva L.D., Filippov V.M., Khalipov V.L. Subavroral’naya verkhnyaya ionosfera [Subauroral upper ionosphere]. Novosibirsk, Nauka Publ., 1990, 192 p. (In Russian).

4. He F., Zhang X.-X., Chen B. Solar Cycle, Seasonal and diurnal variations of subauroral ion drifts: statistical results. J. Geophys. Res. 2014, vol. 119, N 6, pp. 5076-5086. DOI:

5. He F., Zhang X.-X., Wang W., Wan W. Different evolution patterns of subauroral polarization streams (SAPS) during intense storms and quiet time substorms. Geophys. Res. Lett. 2017, vol. 44, pp. 10796-10804. DOI:

6. Landry R.G., Anderson P.C. An auroral boundary-oriented model of subauroral polarization streams (SAPS). J. Geophys. Res. 2018, vol. 123, pp. 3154-3169. DOI: 10.1002/ 2017JA024921.

7. Maynard N.C. On large poleward directed electric fields at subauroral latitudes. Geophys. Res. Lett. 1978, vol. 5, no. 7, pp. 617-618. DOI:

8. Maynard N.C., Aggson T.L., Heppner J.P. Magnetospheric observation of large subauroral electric fields. Geophys. Res. Lett. 1980, vol. 7, no. 11, pp. 881-884. DOI: 10.1029/ GL007i011p00881.

9. Piggott W.R., Rawer K. URSI Handbook of Ionogram Interpretation and Reduction. Asheville, N.C. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Data Service, 1972. 324 p. (Russ. ed.: Mednikova N.V. Rukovodstvo URSI po interpretatsii i obrabotke ionogramm. Moscow, Nauka Publ., 1977. 342 p. (In Russian).

10. Reshetnikov D.D., Filippov V.M., Baishev D.G., Stepanov A.E., Andreev R.P., Everstov A.I., et al. Morfologiya i dinamika uzkikh provalov ionizatsii v subavroral'noy oblasti F [Morphology and dynamics of narrow ionization dips in the subauroral region F]. Yakutsk. Preprint. YANTS SO AN SSSR Publ. 1987, 39 p. (In Russian).

11. Rukovodstvo URSI po interpretatsii i obrabotke ionogramm. (Perevod s angliiskogo, Mednikova N.V.). Moscow: Nauka Publ., 1977. 342 p.

12. Shulgina N.V. Sporadic formations in the F-region. Avroralnye yavleniya 70 [Auroral phenomena 70]. Apatity: KF AN SSSR Publ., 1974, pp. 44-46. (In Russian).

13. Smiddy M., Kelley M.C., Burke W.J., Rich F., Sagalyn R., Shuman B., et al. Intense poleward directed electric fields near the ionospheric projection of the plasmapause. Geophys. Res. Lett. 1977, vol. 4, no. 11, pp. 543-546. DOI: i011p00543.

14. Spiro R.W., Heelis R.A., Hanson W.B. Rapid subauroral ion drifts observed by Atmospheric Explorer C. Geophys. Res. Lett. 1979, vol. 6, no. 8, pp. 657-660. DOI: 10.1029/ GL006i008p00657.

15. Stepanov A.E., Khalipov V.L., Golikov I.A., Bondar Ye.D. Polyarizatsionnyi dzhet: uzkie i bystrye dreify subavroral'noi ionosfernoi plazmy [Polarizing jet: narrow and fast drifts of subauroral ionospheric plasma]. Yakutsk: Izdatelskii dom SVFU Publ., 2017, 176 p. (In Russian).

16. Stepanov A.E., Khalipov V.L., Kotova G.A., Zabolotskii M.S., Golikov I.A. Observations of large-scale plasma convection in the magnetosphere with respect to the geomagnetic activity level. Geomagnetizm i aeronomiya [Geomagnetism and Aeronomy]. 2016, vol 56, no. 2, pp. 181-186. (In Russian).

17. URL: (accessed July 4, 2019).

Login or Create
* Forgot password?