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Title: THE GEOMAGNETIC STORM ON MARCH 13-14, 2022: SPECTRAL CHARACTERISTICS IN ULRA-LOW FREQUENCY RANGE
THE GEOMAGNETIC STORM ON MARCH 13-14, 2022: SPECTRAL CHARACTERISTICS IN ULRA-LOW FREQUENCY RANGE

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Maria Chamati
10.5593/sgem2023/1.1/s05.73
10.5593/sgem2023/1.1
1314-2704
978-619-7603-56-9
English
23
1.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Applied and Environmental Geophysics
Geomagnetic storms cause disturbances in the Earth's magnetosphere, which differ in their spectral composition at different latitudes. The study of local spectral characteristics, both via remote sensing and ground-based data, provides valuable information on the dynamic processes in the Earth's magnetosphere and the longitudinal propagation of the corresponding disturbances.
The local spectral characteristics of the moderate (G2) geomagnetic storm that occurred March 13–14, 2022, are obtained. A time series of data recorded at Conrad Observatory, Austria, on the variations of the geomagnetic field along the X and Y directions in the ultra-low frequency (ULF) range corresponding to periods 1–900s is analyzed. Through the application of coherent analysis based on wavelet transformation, the time periods and frequency intervals where the two components of the geomagnetic field have a high degree of correlation with each other are determined. The Morlet wavelet method is then applied, and the power spectrum is found. Two types of ULF waves are clearly visible in the spectra of the Pc3 and Pc5 frequency bands recorded during the storm. Pc5 waves occur during all phases of the storm, while Pc3 waves mainly occur during the main phase. Their relationship with temporal changes in the parameters of the solar wind is studied.
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This study is supported by the Contract No D01-164/28.07.2022 (Project "National Geoinformation Center (NGIC))", financed by the National Roadmap for Scientific Infrastructure 2020-2027 of Bulgaria. We thank the OMNIWEB database for data provided. The results presented in this paper rely on the data collected at Conrad Observatory, Austria. We thank Zentralanstalt fur Meteorologie und Geodynamik (ZAMG), for supporting its operation and INTERMAGNET for promoting high standards of magnetic observatory practice (www.intermagnet.org).
conference
https://doi.org/10.5593/sgem2023/1.1/s05.73
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference-SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
609-616
03 - 09 July, 2023
website
9062
geomagnetic storm, ULF-waves, spectral, wavelet