Spremembe v gostoti energije magnetnega polja Zemlje na observatoriju PIA, Slovenija, med geomagnetno nevihto G5 11. maja 2024

Čop, Rudi (author)

Geomagnetne nevihte so največja motnja v Zemljinem magnetnem polju. Dne 11. maja 2024, v maksimumu 25. sončevega cikla, je nastala geomagnetna nevihta, ki je na planetarni ravni dosegla najvišjo stopnjo G5. Tudi na geomagnetnem observatoriju PIA (Piran, Slovenia) je bila tisti dan izmerjena geomagnetna nevihta, ki je dosegla največjo možno vrednost geomagnetnega indeksa K = 9. Tako močne geomagnetne nevihte se v povprečju pojavljajo na vsakih štirideset do šestdeset let. Geomagnetna nevihta z indeksom K = 9 je pomembna referenca za vse motnje v lokalnem magnetnem polju iz različnih izvorov in različnih jakosti. Zato je bila narejena analiza pospeškov v gostoti energije lokalnega magnetnega polja v prvih 150 dneh v letu 2024. Ugotovljeni učinki geomagnetnih neviht z različnimi indeksi K bodo podlaga za boljšo analizo motenj v lokalnem magnetnem polju, ki so se zgodile v preteklih letih ali se bodo zgodile v prihodnje.

• Language: Slovenian
• Keywords: sončevi cikli, močna geomagnetna nevihta, gostota energije v lokalnem magnetnem polju, pospeški v gostoti energije, geomagnetni indeksi
• Work type: Article
• Typology: 1.03 - Other scientific articles
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: Str. 361-369
• Numbering: Letn. 68, št. 3
• PID: 20.500.12556/RUL-164303
• UDC: 523.9:550.38(497.4)
• ISSN on article: 0351-0271
• COBISS.SI-ID: 212264707
• Publication date in RUL: 21.10.2024

Record is a part of a journal

• Title: Geodetski vestnik. glasilo Zveze geodetov Slovenije
• Shortened title: Geod. vestn.
• Publisher: Zveza geodetov Slovenije
• ISSN: 0351-0271
• COBISS.SI-ID: 5091842

Licences

• License: CC BY-NC 4.0, Creative Commons Attribution-NonCommercial 4.0 International
• Link: http://creativecommons.org/licenses/by-nc/4.0/
• Description: A creative commons license that bans commercial use, but the users don’t have to license their derivative works on the same terms.

Secondary language

• Language: English
• Title: Changes in the energy density of the Earth's magnetic field at the PIA, Slovenia, observatory during the G5 Geomagnetic Storm on May 11, 2024

Abstract

Geomagnetic storms are the largest disturbance in the Earth's magnetic field. On May 11, 2024, a geomagnetic storm occurred at the peak of the 25th solar cycle, reaching the highest level (G5) on the planetary scale. On that day, a geomagnetic storm was also measured at the PIA geomagnetic observatory (Piran, Slovenia), reaching the maximum possible value of the geomagnetic index K = 9. Such strong geomagnetic storms occur on average every 40 to 60 years. A geomagnetic storm with an index of K = 9 represents an important reference for all disturbances in the local magnetic field from different sources and different intensities. Therefore, an analysis of accelerations in the energy density of the local magnetic field during the first 150 days in 2024 was made. The identified effects of geomagnetic storms with different K indices will serve to better analyse disturbances in the local magnetic field that have occurred in the past years and will happen in the future.

• Keywords: solar cycles, severe geomagnetic storm, energy density in the local magnetic field, accelerations in the energy density, geomagnetic indices