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Title: COMPARATIVE AND SPECTRAL STUDIES BETWEEN GEOMAGNETIC SERIES RECORDED IN INTERMAGNET OBSERVATORIES
COMPARATIVE AND SPECTRAL STUDIES BETWEEN GEOMAGNETIC SERIES RECORDED IN INTERMAGNET OBSERVATORIES

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Laurentiu Asimopolos; Natalia-Silvia Asimopolos; Adrian-Aristide Asimopolos
10.5593/sgem2022/6.1/s28.36
10.5593/sgem2022/6.1
1314-2704
978-619-7603-48-4
English
22
6.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Space Technologies and Planetary Science
The main objectives of this study are: analysis of the associated spectrum of the geomagnetic field, time of occurrence of geomagnetic storms and comparisons between recordings made at various geomagnetic observatories in the INTERMAGNET network, in terms of frequency intensity identified and correlations during geomagnetic disturbances.
A geomagnetic storm is a temporary disturbance of the Earth's magnetosphere caused by ejections of solar corona mass, coronal holes or solar flares. The data used in this paper are recorded from the Surlari Observatory, and additional information for the characterization of the analyzed geomagnetic storms, we obtained from specialized sites such as www.intermagnet.org and www.noaa.gov. The information about the geomagnetic data from other observatories, as well as about the planetary physical parameters allowed us to make comparative studies between the data recorded in different observatories.
We used and calculated filtered data, spectral analysis, wavelet algorithms with different mathematical functions at different levels, the variation of the correlation coefficients for the magnetic components recorded at different latitudes and longitudes.
[1] Asimopolos, N. S., Asimopolos, L. - Study on the high-intensity geomagnetic storm from march 2015, based on terrestrial and satellite data, Micro and Nano Tehnologies & Space Tehnologies & Planetary Science, Issue 6.1, SGEM 2018, vol.18, pag. 593-600
[2] Benoit, S.L. – 2012 - INTERMAGNET Technical reference manual - Version 4.6, Murchison House West Mains Road Edinburgh EH9 3LA UK, 100 pag.
[3] Chatfield, C., 1989: The Analysis of Time Series: An Introduction. 4th Ed. Chapman and Hall, 241 pp.
[4] Daubechies, I., 1990: The wavelet transforms time-frequency localization and signal analysis. IEEE Trans. Inform. Theory, 36, 961–1004 pag.
[5] Gebbins,D., Herrero-Bervera,E. – 2007 - Encyclopedia of Geomagnetism and Paleomagnetism – Springer, pag.311-360/1072.
[6] Torrence, C., Compo, G.P. - A Practical Guide to Wavelet Analysis, Bulletin of the American Meteorological Society, Vol. 79, No. 1, January 1998, 61-78 pag.
[7] http://www.intermagnet.org
[8] http://www.noaa.gov
[9] https://www.spaceweatherlive.com/en/archive
[10] https://www.mathworks.com/products/signal.html
We gratefully acknowledge the many and significant contributions and comments provided by our colleagues from geomagnetic observatories. The manual about observatories methodologies is based on the original document (INTERMAGNET Technical Reference). This work was supported by project PN19450301 of the Romanian Ministry of Research, Innovation and Digitalization.
conference
https://doi.org/10.5593/sgem2022/6.1/s28.36
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish 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; Turkish Acad Sci.
279-286
04 - 10 July, 2022
website
8663
Geomagnetic disturbances. Fourier spectral deconvolution, Wavelet analysis, Data filtering and correlation