Vol. 60, No. 5, 2020

Geomagnetism and Aeronomy

Behavior of the Speed and Temperature of the Solar Wind during Interplanetary Disturbances Creating Forbush Decreases

A. A. Melkumyan, A. V. Belov, M. A. Abunina, A. A. Abunin, E. A. Eroshenko, V. A. Oleneva and V. G. Yanke p. 521 abstract

Equatorial Plasma Bubbles: Occurrence Probability versus Local Time

L. N. Sidorova p. 530 abstract

Monitoring of the Electron-Acceleration Region with Auroral Kilometric Radiation

D. V. Chugunin, A. A. Chernyshov, I. L. Moiseenko, M. E. Viktorov and M. M. Mogilevsky p. 538 abstract

Evolution of High-Latitude Geomagnetic Disturbances during the Magnetic Storm of July 22, 2009

L. I. Gromova, N. G. Kleimenova, S. V. Gromov and L. M. Malysheva p. 547 abstract

Identification of Vortex Currents in the Ionosphere and Estimation of Their Parameters Based on Ground Magnetic Data

V. E. Chinkin, A. A. Soloviev and V. A. Pilipenko p. 559 abstract

Calculation of the Ionization Rate in the Atmosphere in the Polar Region during Solar Proton Events

E. A. Ginzburg, A. A. Krivolutsky, A. A. Kukoleva and I. N. Myagkova p. 570 abstract

Estimation of the Ionospheric Effects of Geomagnetic Disturbances Based on Data from Wakkanai Station

A. D. Legen’ka and V. V. Khegai p. 577 abstract

Trends in Parameters of the F2 Layer and the 24th Solar-Activity Cycle

A. D. Danilov and A. V. Konstantinova p. 586 abstract

Ionospheric Effects of Solar Flares in September 2017 and an Evaluation of Their Influence on Errors in Navigation Measurements

I. I. Shagimuratov, I. E. Zakharenkova, N. Yu. Tepenitsina, G. A. Yakimova and I. I. Efishov p. 597 abstract

Effective Solar Activity Index for the Median of the Critical Frequency of the F2 Layer

M. G. Deminov and G. F. Deminova p. 606 abstract

Ionospheric Disturbances during Meteorological Storms

M. I. Karpov, I. V. Karpov, O. P. Borchevkina, G. A. Yakimova and N. A. Korenkova p. 611 abstract

Tropical Cyclones and Possible Winter Thunderstorms on Kamchatka

Yu. M. Mikhailov, S. E. Smirnov, G. A. Mikhailova and O. V. Kapustina p. 619 abstract

Reflection of Large Tectonic Structures of the Eastern Part of the Arctic Ocean in the Lithospheric Magnetic Field

L. Yu. Abramova, L. M. Abramova, I. M. Varentsov and S. V. Filippov p. 636 abstract

Pre-earthquake Atmospheric and Ionospheric Anomalies before Taiwan Earthquakes (M 6.1 and M 6.4) on February (4th and 6th), 2018

C. Prasanna Simha, Venkatanathan Natarajan and Katlamudi Madhusudhana Rao p. 644 abstract

Evaluating Solar Quiet Variation of the Horizontal Geomagnetic Field using Nonlinear Time Series Analysis Techniques

E. O. Falayi, A. S. Ajose, T. O. Roy-Layinde, A. T. Adewole and J. O. Adepitan p. 661 abstract