1. Manifestation of Seismic Impacts in the Ionosphere Far from the Earthquake Epicenter

   • V. Yu. Belashov
   • E. S. Belashova
   • O. A. Kharshiladze

   OriginalPaper 01 March 2021 Pages: 1 - 5

   

2. Characteristic Features of Solar Cosmic Rays in the 21st–24th Solar-Activity Cycles According to Data from Catalogs of Solar Proton Events

   • G. A. Bazilevskaya
   • E. I. Daibog
   • O. S. Yakovchouk

   OriginalPaper 01 March 2021 Pages: 6 - 13

   

3. Method for Cognitive Identification of Ionospheric Precursors of Earthquakes

   • S. A. Pulinets
   • D. V. Davidenko
   • P. A. Budnikov

   OriginalPaper 01 March 2021 Pages: 14 - 24

   

4. Model of Jet Generation in Space Plasma

   • O. G. Onishchenko
   • O. A. Pokhotelov
   • A. P. Matafonov

   OriginalPaper 01 March 2021 Pages: 25 - 28

5. Diurnal and Longitudinal Variations in the Equatorial Anomaly for Winter Solstice According to Interkosmos-19 Satellite Data

   • A. T. Karpachev

   OriginalPaper 01 March 2021 Pages: 29 - 43

   

6. Formation of Extreme Anomalies in the Total Electron Content According to Data from Linear Theory

   • A. S. Gritsun

   OriginalPaper 01 March 2021 Pages: 44 - 53

   

7. Advanced Production of Quasi-Definitive Magnetic Observatory Data of the INTERMAGNET Standard

   • D. V. Kudin
   • A. A. Soloviev
   • O. V. Legostaeva

   OriginalPaper 01 March 2021 Pages: 54 - 67

   

8. Variations in Ionospheric Parameters during the Formation of a Polarization Jet

   • A. E. Stepanov
   • A. Yu. Gololobov
   • I. A. Golikov

   OriginalPaper 01 March 2021 Pages: 68 - 72

   

9. Effects of the Strong Ionospheric Storm of August 26, 2018: Results of Multipath Radiophysical Monitoring

   • L. F. Chernogor
   • K. P. Garmash
   • Yu Zheng

   OriginalPaper 01 March 2021 Pages: 73 - 91

   

10. Efficiency of Ionospheric Model Correction by Vertical-Incidence Sounding Data from an Ionosonde during Low Sunspot Activity

    • N. G. Kotonaeva
    • M. V. Kolomin
    • M. Yu. Philippov

    OriginalPaper 01 March 2021 Pages: 92 - 99

    

11. Features of Variations in the F2-Layer Critical Frequency During the Sudden Stratospheric Warnings of 1966–2009 According to Data from Kaliningrad and Irkutsk Stations

    • A. V. Timchenko
    • F. S. Bessarab
    • K. G. Ratovsky

    OriginalPaper 01 March 2021 Pages: 100 - 107

    

12. Geomagnetic Effects of Remote Earthquakes

    • B. G. Gavrilov
    • Yu. V. Poklad
    • I. A. Sanina

    OriginalPaper 01 March 2021 Pages: 108 - 116

    

13. Statistical Association between Space Weather and Meteorological Variables During Winter in the Baltic Sea Region

    • Deivydas Kiznys
    • Jone Vencloviene

    OriginalPaper 01 March 2021 Pages: 117 - 127

    

14. Computation of Composite Mg II Core-to-Wing Ratio for Solar Cycle 22 and 23

    • Soumya Roy
    • Amrita Prasad
    • Sankar Narayan Patra

    OriginalPaper 01 March 2021 Pages: 128 - 137

    

15. The Use of Coupling Functions in the Forecasting of the Dst-Index Amplitude with Adaptive Methods

    • I. N. Myagkova
    • V. R. Shirokii
    • S. A. Dolenko

    OriginalPaper 01 March 2021 Pages: 138 - 147