Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 72125 10.2205/2023ES000887 xxzehm ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ On the Use of a Complex Indicator of the Stability of Permutation Entropy of Time Series Fragments When Analyzing Infrasound Monitoring Signals of the Altai Republic On the Use of a Complex Indicator of the Stability of Permutation Entropy of Time Series Fragments When Analyzing Infrasound Monitoring Signals of the Altai Republic https://orcid.org/0000-0003-1327-5188 Кудрявцев Николай Георгиевич Kudryavtsev Nikolay Georgievich ngkudr@mail.ru

кандидат технических наук;

candidate of technical sciences;

 https://orcid.org/0000-0001-9176-6965 Фролов Иван Николаевич Frolov Ivan Nikolaevich https://orcid.org/0000-0002-8043-4014 Сафонова Варвара Юрьевна Safonova Varvara Yurievna Горно-Алтайский государственный университет Gorno-Altaisk State University 31 12 2023 31 12 2023 23 6 1 16 06 12 2023 29 12 2023 https://rjes.ru/en/nauka/article/72125/view

This paper discusses one of the approaches that allows us to assess the degree of complexity or randomness of fragments of a time series in order to detect infrasound or geomagnetic signals in the results of observations of the dynamics of the natural or man-made processes under study. In our case, we are talking about monitoring the infrasound background on the territory of the Altai Republic. To solve the problem of estimating the required characteristics of a time series with minimal computational costs and in real time, a complex indicator of the stability of permutation entropy is introduced, since estimating the value of classical permutation entropy for n = 3 (the most commonly used version of permutation entropy) does not allow solving the problem with sufficient accuracy.

This paper discusses one of the approaches that allows us to assess the degree of complexity or randomness of fragments of a time series in order to detect infrasound or geomagnetic signals in the results of observations of the dynamics of the natural or man-made processes under study. In our case, we are talking about monitoring the infrasound background on the territory of the Altai Republic. To solve the problem of estimating the required characteristics of a time series with minimal computational costs and in real time, a complex indicator of the stability of permutation entropy is introduced, since estimating the value of classical permutation entropy for n = 3 (the most commonly used version of permutation entropy) does not allow solving the problem with sufficient accuracy.

 infrasound monitoring time series permutation entropy complexity assessment stratospheric waveguide turning points infrasound monitoring time series permutation entropy complexity assessment stratospheric waveguide turning points The facilities of the GC RAS Common Use Center “Analytical Center of Geomagnetic Data” (http://ckp.gcras.ru/) were used for conducting the research. The research was carried out with funds from the Russian Science Foundation (RSF) and the Ministry of Education and Science of the Altai Republic No. 23-21-10087. The facilities of the GC RAS Common Use Center “Analytical Center of Geomagnetic Data” (http://ckp.gcras.ru/) were used for conducting the research. The research was carried out with funds from the Russian Science Foundation (RSF) and the Ministry of Education and Science of the Altai Republic No. 23-21-10087.

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