407260

Response of Egyptian Observatories to the Intense Storm on April 23, 2023.

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Last updated: 01 Feb 2025

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Abstract

A comprehensive study was conducted to assess the response of the Egyptian magnetic observatories (Misallat ‘MLT' & Abu Simble ‘ABS') to the intense storm that occurred on April 23, 2023. This storm is currently recognized as the second most intense storm within the Solar Cycle 25. The storm has caused significant fluctuations in the components of the Earth's magnetic field (X, Y, and Z). This study includes data from the Egyptian observatories (MLT & ABS), the GOES-16 satellite, and nearby observatories in Alergia and Greece (TAM and PEG). Unlike previous studies that have focused on the impacts of magnetic storms on regional magnetic field observations, this research provides a significant approach and additional value by examining the response of local Egyptian observatories to such important phenomena. The data collected from the Egyptian observatories was correlated with other data sets from TAM, PEG, and the GOES-16 satellite. The GOES-16 data showed a significant response due to the interaction of the satellite with the incoming solar wind stream in the plasma medium. Ground observatories also recorded simultaneous behavior in the observed components, with the highest level of disturbance on April 23rd. However, some long-period changes were still visible due to typical diurnal variation. To extract variations within the magnetic pulsations range, magnetic data was subjected to appropriate filtering techniques. High-pass filtering was applied by subtracting a time series moving average with a window of 100 samples from the measured time series. The study revealed storm-generated pulsations in the magnetosphere, with maximum pulse amplitudes of -101nT for Goes16, 13nT for MLT, and 7nT for ABS observatories. The power spectrogram showed pulsations that occurred in the recovery phase of the magnetic storm. The results of this study have significant implications for improving our understanding of space weather physics, forecasting, and mitigation procedures required.  

DOI

10.21608/jegs.2024.407260

Keywords

Magnetic storm, Misallat, Abu Simble, pulsations, Pc5, Space weather

Authors

First Name

Aalaa

Last Name

Samy

MiddleName

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Affiliation

Geomagnetic laboratory, Geomagnetic and Geoelectric Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421 Helwan, Cairo, Egypt.

Email

aalaa.nriag@gmail.com

City

-

Orcid

0000-0002-4844-6912

First Name

Tareq Fahmy

Last Name

Abdullatif

MiddleName

-

Affiliation

Geomagnetic laboratory, Geomagnetic and Geoelectric Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421 Helwan, Cairo, Egypt.

Email

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City

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Orcid

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First Name

Marwa

Last Name

Shaheen

MiddleName

-

Affiliation

Geomagnetic laboratory, Geomagnetic and Geoelectric Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421 Helwan, Cairo, Egypt

Email

marwa.maher@nriag.sci.eg

City

-

Orcid

-

Volume

22

Article Issue

1

Related Issue

53341

Issue Date

2024-12-01

Receive Date

2025-01-26

Publish Date

2024-12-01

Page Start

13

Page End

28

Print ISSN

1687-2207

Link

https://jegs.journals.ekb.eg/article_407260.html

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http://journals.ekb.eg?_action=service&article_code=407260

Order

407,260

Type

Original Article

Type Code

3,051

Publication Type

Journal

Publication Title

Journal of Egyptian Geophysical Society

Publication Link

https://jegs.journals.ekb.eg/

MainTitle

Response of Egyptian Observatories to the Intense Storm on April 23, 2023.

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Article

Created At

01 Feb 2025