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Features of Ionospheric Effects of the Solar Eclipse Occurred on the Morning of October 25, 2022

  • SPACE PHYSICS
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Abstracts

A solar eclipse (SE) leads to perturbations of all subsystems in the Earth–atmosphere–ionosphere–magnetosphere system and to perturbations of geophysical fields. Each SE leads to a whole series of physical and chemical processes occurring in the ionosphere. Along with common features, each SE has its own peculiarities with regard to these processes. These processes depend on the solar activity phase, time of the year, time of the day, geographic coordinates, atmospheric weather, space weather, magnitude of eclipse, etc. Therefore, studying these effects during each SE is an urgent task. The aim of this study is to describe the results of the analysis of the effects features of the SE which was observed shortly after sunrise on October 25, 2022 mainly at high latitudes. The data obtained from a network of space stations and navigation satellites moving over the region of partial SE were used for observations. It is found that the maximum decrease in the total electron content (TEC) in the ionosphere in these observations was 1.6–4.1 TECU, and its relative decrease reached 12–25%. The maximum decrease in the TEC was delayed 18–33 min in time with respect to the point in time when the maximum magnitude of the SE was reached. The duration of the response of the ionosphere to the SE was 120–180 min, which exceeded the eclipse duration.

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ACKNOWLEDGMENTS

We are grateful to V.L. Dorokhov for preparing the initial data for measurements and to Y.H. Zhdanko for his assistance in preparation of the manuscript.

Funding

This study was supported by the National Research Foundation of Ukraine (project no. 2020.02/0015 entitled “Theoretical and Experimental Studies of Global Perturbations of Natural and Man-Made Origins in the Earth–Atmosphere–Ionosphere System”). The study was additionally supported in part within State budget research projects assigned by the Ministry of Education and Science of Ukraine (state registration nos. 0121U109881 and 0122U001476).

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  1. V.N. Karazin Kharkiv National University, Kharkiv, Ukraine

    L. F. Chernogor & Yu. B. Mylovanov

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  1. L. F. Chernogor
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  2. Yu. B. Mylovanov
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Correspondence to L. F. Chernogor.

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Chernogor, L.F., Mylovanov, Y.B. Features of Ionospheric Effects of the Solar Eclipse Occurred on the Morning of October 25, 2022. Kinemat. Phys. Celest. Bodies 40, 77–87 (2024). https://doi.org/10.3103/S0884591324020028

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