Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 90779 10.2205/2025ES000978 mslqep Спецвыпуск: "Наука о данных, геоинформатика и системный анализ в изучении Земли" Special Issue: “Data Science, Geoinformatics and Systems Analysis in Geosciences” Спецвыпуск: "Наука о данных, геоинформатика и системный анализ в изучении Земли" Method for Detection of Forbush Effects in Cosmic Ray Flux According to Neutron Monitors Data Using Wavelet Transform Method for Detection of Forbush Effects in Cosmic Ray Flux According to Neutron Monitors Data Using Wavelet Transform https://orcid.org/0000-0002-6172-1827 Мандрикова Оксана В. Mandrikova Oksana V. oksanam1@mail.ru https://orcid.org/0009-0006-8027-378X Мандрикова Богдана С. Mandrikova Bogdana S. Институт космофизических исследований и распространения радиоволн ДВО РАН Россия Institute of Cosmophysical Research and Radio Wave Propagation, FEB RAS Russian Federation Институт космофизических исследований и распространения радиоволн ДВО РАН Россия Institute of Cosmophysical Research and Radio Wave Propagation, FEB RAS Russian Federation 23 05 2025 23 05 2025 25 2 1 8 15 11 2024 15 04 2025 https://rjes.ru/en/nauka/article/90779/view

The method developed by the authors for detection of Forbush effects in cosmic ray variations based on ground data of neutron monitors is presented. The method is based on the synthesis of the classical theory of risks with nonlinear approximating schemes in wavelet bases. The basis of the method are the rules composed by the authors. Numerical realization of the developed rules makes it possible to obtain a solution close to optimal without pre-training in near real-time mode. On the example of periods of extreme magnetic storms in 2024, method results confirming its efficiency are illustrated. General anomalous dynamics of the cosmic ray flux is distinguished. Anomalous changes, preceding the beginnings of the events under analysis, were discovered. The observed correlation with the changes of interplanetary environment parameters indicates the reliability of the obrained results.

The method developed by the authors for detection of Forbush effects in cosmic ray variations based on ground data of neutron monitors is presented. The method is based on the synthesis of the classical theory of risks with nonlinear approximating schemes in wavelet bases. The basis of the method are the rules composed by the authors. Numerical realization of the developed rules makes it possible to obtain a solution close to optimal without pre-training in near real-time mode. On the example of periods of extreme magnetic storms in 2024, method results confirming its efficiency are illustrated. General anomalous dynamics of the cosmic ray flux is distinguished. Anomalous changes, preceding the beginnings of the events under analysis, were discovered. The observed correlation with the changes of interplanetary environment parameters indicates the reliability of the obrained results.

 data analysis method cosmic rays neutron monitor data Forbush effects magnetic storms data analysis method cosmic rays neutron monitor data Forbush effects magnetic storms The work was supported by the State Task of IKIR FEB RAS (No. 124012300245-2). The work was supported by the State Task of IKIR FEB RAS (No. 124012300245-2).

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