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Rudarsko-geološko-naftni zbornik, Vol. 40 No. 4, 2025.

Original scientific paper

https://doi.org/10.17794/rgn.2025.4.10

PROCJENA UČINAKA JAKE GEOMAGNETSKE OLUJE OD 10. DO 11. SVIBNJA 2024. NA GEOMAGNETSKO POLJE I IONOSFERU NAD INDONEZIJSKIM PODRUČJEM

Anwar Santoso orcid id orcid.org/0000-0002-7671-0514 ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia; Physics Department, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta, Center of Java 55281, Indonesia *
Sismanto Sismanto orcid id orcid.org/0000-0002-7671-0514 ; Geophysics Laboratory, Physics Department, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta, Center of Java 55281, Indonesia
Rhorom Priyatikanto orcid id orcid.org/0000-0003-1203-2651 ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia
Eddy Hartantyo ; Geophysics Laboratory, Physics Department, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta, Center of Java 55281, Indonesia
Emanuel Sungging Mumpuni orcid id orcid.org/0000-0002-2270-2906 ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia
La Ode Muhammad Musafar Kilowasid ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia
Abdul Rachman ; National Research and Innovation Agency (BRIN), Kupang, East Nusa Tenggara 85362, Indonesia
Fitri Nuraeni orcid id orcid.org/0000-0002-8886-9186 ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia
Siska Filawati ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia
Erlansyah Erlansyah ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia
Dadang Nurmali ; Research Center for Space, National Research and Innovation Agency (BRIN), Bandung 40173, Indonesia

* Corresponding author.

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Abstract

Jaka geomagnetska oluja 11. svibnja 2024. najveći je svemirski vremenski fenomen u 25. Sunčevu ciklusu. U ovome radu prikazan je utjecaj te jake geomagnetske oluje (Dst = –412 nT) na geomagnetsko polje i ionosferu iznad Indonezije. Dodatno, ispituju se geoelektrični poremećaji nastali tijekom oluje i poremećaji HF radiokomunikacije u Indoneziji. Studija upotrebljava podatke o geomagnetskome polju (HDZ) i podatke o ionosferi (foF2) iz Pontianaka i Kupanga, izračunane u prosjeku po minuti i po satu. Rezultati pokazuju da je geomagnetska oluja 11. svibnja 2024. uzrokovala geomagnetske poremećaje s ΔH = –471 nT u Pontianaku i ΔH = –462 nT u Kupangu. Ti su poremećaji doveli do znatnih geoelektričnih potresa oko regije s mogućim induciranim strujama. U ionosferi je geomagnetska oluja uzrokovala negativne ionosferske oluje tijekom glavne faze i pozitivne oluje tijekom faze oporavka, kao što je primijećeno u foF2 podatcima s obiju postaja. Ove ionosferske oluje rezultirale su poremećajima foF2 (Ø) s vrijednostima u rasponu od –30 % do 30 % u trajanju od 180 minuta.

Keywords

geomagnetska oluja; međuplanetarno magnetsko polje; svemirsko vrijeme; geomagnetska inducirana struja; ionosfera

Hrčak ID:

334899

URI

https://hrcak.srce.hr/334899

Publication date:

27.8.2025.

Article data in other languages: english

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