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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

ASSESSMENT OF THE SEVERE GEOMAGNETIC STORM ON MAY 10-11, 2024 EFFECTS ON THE GEOMAGNETIC FIELD AND IONOSPHERE OVER THE INDONESIAN REGION

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

The severe geomagnetic storm on May 11, 2024, is the largest space weather phenomenon in the 25th solar cycle. This paper presents the impact of that severe geomagnetic storm (Dst = -412 nT) on the geomagnetic field and ionosphere over Indonesia. Additionally, it examines geoelectric disturbances generated during the storm and disruptions to HF radio communication in Indonesia. The study uses geomagnetic field data (HDZ) and ionospheric data (foF2) from Pontianak and Kupang, averaged minutely and hourly. The results indicate that the geomagnetic storm on May 11th, 2024 caused geomagnetic disturbances with ΔH = -471 nT in Pontianak and ΔH = -462 nT in Kupang. These disturbances led to significant geoelectric disturbances around the region with possible induced currents. In the ionosphere, the geomagnetic storm caused negative ionospheric storms during the main phase and positive storms during the recovery phase, as observed in the foF2 data from both stations. These ionospheric storms resulted in foF2 disturbances (ϕ) with values ranging from -30% to 30%, lasting for 180 minutes.

Keywords

geomagnetic storm; interplanetary magnetic field; space weather; geomagnetic induced current; ionosphere

Hrčak ID:

334899

URI

https://hrcak.srce.hr/334899

Publication date:

27.8.2025.

Article data in other languages: croatian

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