Vestnik КRAUNC. Fiz.-Mat. nauki. 2024. vol. 49. no. 4. P. 157-170. ISSN 2079-6641

INFORMATION AND COMPUTING TECHNOLOGIES
https://doi.org/10.26117/2079-6641-2024-49-4-157-170
Research Article
Full text in Russian
MSC 41A99

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Analysis of the Ionospheric Parameter Dynamics During Disturbed Periods Based on Aurora System Results

N. V. Fetisova^{\ast}, O. V. Mandrikova^{\ast}

Institute of Cosmophysical Research and Radiowave Propagation FEB RAS, 684034, Kamchatka region, Paratunka, Mirnaya Str.7

Abstract. The paper describes an ionospheric component of “Aurora” interactive system. The “Aurora” system implements new methods of data analysis based on the combination of modern means of digital signal processing with classical methods of data analysis. The paper presents the results of the ionospheric component based on a generalized multicomponent model of ionospheric parameters developed by the authors. The model and numerical algorithms based on it make it possible to study the ionospheric parameter dynamics during disturbed periods (to detect anomalous periods and estimate their parameters) in detail. The ionospheric component of “Aurora” system performs processing and analysis of the foF2 ionospheric critical frequency parameters recorded at Paratunka station (Kamchatka Territory) and forms a conclusion on the state of the ionosphere above Kamchatka. This development was carried out by a team of the system analysis laboratory of IKIR FEB RAS. The paper presents numerical algorithms implemented in the system and system results during increased geomagnetic activity (as an example of a weak magnetic storm from June 15, 2024) and seismic processes in Kamchatka (as an example of the November 2, 2018 earthquake). During the periods of the considered events, anomalous changes were detected in the ionosphere, which were accompanied with both the increase and decrease of the electron concentration.

Key words: ionospheric disturbances, wavelet transform, autoregressive models.

Received: 08.11.2024; Revised: 16.11.2024; Accepted: 26.11.2024; First online: 28.11.2024

For citation. Fetisova N. V., Mandrikova O. V. Analysis of the ionospheric parameter dynamics during disturbed periods based on Aurora system results. Vestnik KRAUNC. Fiz.-mat. nauki. 2024, 49: 4, 157-170. EDN: RTKSCP. https://doi.org/10.26117/2079-6641-2024-49-4-157-170.

Funding. The work was supported by IKIR FEB RAS State Task (Reg. No. NIOKTR 124012300245-2).

Competing interests. The authors declare that there are no conflicts of interest regarding authorship and publication.

Contribution and Responsibility. All authors contributed to this article. Authors are solely responsible for providing the final version of the article in print. The final version of the manuscript was approved by all authors.

∗Correspondence: E-mail: nv.glushkova@yandex.ru, oksanam1@mail.ru,

The content is published under the terms of the Creative Commons Attribution 4.0 International License

© Fetisova N. V., Mandrikova O. V., 2024

© Institute of Cosmophysical Research and Radio Wave Propagation, 2024 (original layout, design, compilation)

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