1. Criteria for Forecasting Proton Events by Real-Time Solar Observations

   • A. B. Struminsky
   • A. M. Sadovskii
   • I. Yu. Grigorieva

   OriginalPaper 26 April 2024 Pages: 139 - 149

   

2. Evolution of Characteristics of Vertical Electric Current and Magnetic Field in Active Regions of the Sun and Their Relation to Powerful Flares

   • A. B. Nechaeva
   • I. V. Zimovets
   • I. N. Sharykin

   OriginalPaper 26 April 2024 Pages: 150 - 171

   

3. Spatial Distribution of the Eddy Diffusion Coefficient in the Plasma Sheet of Earth’s Magnetotail and Its Dependence on the Interplanetary Magnetic Field and Geomagnetic Activity Based on MMS Satellite Data

   • D. Yu. Naiko
   • I. L. Ovchinnikov
   • E. E. Antonova

   OriginalPaper 26 April 2024 Pages: 172 - 179

   

4. The Substorms Impact on Processes in the Ionosphere and Plasmasphere of the Earth

   • G. A. Kotova
   • V. L. Khalipov
   • V. V. Bezrukykh

   OriginalPaper 26 April 2024 Pages: 180 - 188

   

5. Schwabe Solar Cycle in 1000–1700: Variations in Length and Amplitude

   • N. G. Ptitsyna
   • I. M. Demina

   OriginalPaper 26 April 2024 Pages: 189 - 200

   

6. Forecast of Modulation of Cosmic Rays with Rigidity of 10 GV in the 25th Solar Activity Cycle

   • V. G. Yanke
   • A. V. Belov
   • L. A. Trefilova

   OriginalPaper 26 April 2024 Pages: 201 - 210

   

7. Abnormal Quasi-Recurrent Variations of Cosmic Rays in September 2014–February 2015

   • N. S. Shlyk
   • A. V. Belov
   • A. A. Abunin

   OriginalPaper 26 April 2024 Pages: 211 - 223

   

8. Dependence of foF2 on Solar Activity Indices Based on the Data of Ionospheric Stations of the Northern and Southern Hemispheres

   • A. D. Danilov
   • N. A. Berbeneva

   OriginalPaper 26 April 2024 Pages: 224 - 234

   

9. Determination of the Velocity of Ionospheric Disturbances from the Dynamics of Additional U-Shaped Traces on Ionograms

   • O. A. Laryunin
   • V. I. Kurkin
   • A. V. Podlesnyi

   OriginalPaper 26 April 2024 Pages: 235 - 241

   

10. Features of Radio Emission Propagation in the Ionosphere under Conditions of Threshold Nonlinearity

    • V. A. Eremenko
    • N. I. Manaenkova

    OriginalPaper 26 April 2024 Pages: 242 - 247

    

11. Estimation of the Influence of the Dispersion and Diffraction Properties of the Ionosphere on the Transionospheric Channel Bandwidth

    • V. P. Pashintsev
    • M. V. Peskov
    • N. V. Kiselyov

    OriginalPaper 26 April 2024 Pages: 248 - 263

    

12. Pitch-Angle Diffusion of Radiation Belt Electrons and Precipitating Particle Fluxes: Dependence on VLF Wavefield Parameters

    • A. G. Demekhov

    OriginalPaper 26 April 2024 Pages: 264 - 271

    

13. Identification of Possible Short-Term Ionospheric Earthquake Precursors for Seismic Events with Intermediate Hypocentrals Depths by Measuring the Standard Parameters of the Mid-Latitude Es Layer

    • L. P. Korsunova
    • V. V. Khegai

    OriginalPaper 26 April 2024 Pages: 272 - 279

    

14. Seismogenic Quasi-Stationary Electric Fields and Currents from Large-Scale Sources on the Earth’s Surface: Comparison of Model Representations

    • V. V. Hegai

    OriginalPaper 26 April 2024 Pages: 280 - 288