Updated on 2024/12/04

Information

 

写真a

 
KIROLOSSE M. GIRGIS
 
Organization
International Center for Space and Planetary Environmental Science Assistant Professor
Title
Assistant Professor
Contact information
メールアドレス
Tel
0928026240
Profile
My primary research fields are Space Physics and Aerospace Engineering. I am engaged in domestic and international research focusing on modeling and predicting the near-Earth environment influenced by solar activity. Since April 2023, I have also been serving as a "data manager and handler" for the MAGDAS project, which operates the world's largest geomagnetic observation network, comprising 72 observation points worldwide. Additionally, I am an active member of the "Data Subcommittee" within the International Space Weather Initiative project, collaborating with the United Nations. My current research themes are as follows: 1-Development of numerical models for radiation belts influenced by space weather effects. 2-Numerical modeling of particle acceleration during substorms. 3-Empirical studies of the coupling between the solar wind, magnetosphere, ionosphere, and geosphere using data from the MAGDAS network. As an acknowledgment, I would like to express my sincere gratitude to the members of the PBASE program (JSPS KAKENHI Grant Number JP22K21345) for allowing me to participate in the program and for supporting my research.

Research Areas

  • Natural Science / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

  • Natural Science / Space and planetary sciences

  • Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Aerospace engineering

Degree

  • Doctor of Philosophy ( 2020.9 Kyushu University )

  • Master of Science ( 2016.10 )

Research History

  • Kyushu University International Research Center for Space and Planetary Environmental Science (i-SPES) Specially Appointed Assistant Professor Special Project Faculty Assistant Professor

    2024.4 - Present

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    Country:Japan

  • Kyushu University International Research Center for Space and Planetary Environmental Science (i-SPES) Assistant Professor Faculty Member (Special Project)

    2024.4 - Present

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  • Kyushu University International Research Center for Space and Planetary Environmental Science (i-SPES) Academic Researcher 

    2022.5 - 2024.3

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    Country:Japan

  • Kyushu University Department of Earth System Science and Technology (ESST), Interdisciplinary Graduate School of Engineering Sciences (IGSES) Academic Researcher 

    2020.10 - 2022.3

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    Country:Japan

  • Kyushu University Department of Earth System Science and Technology (ESST), Interdisciplinary Graduate School of Engineering Sciences (IGSES) Teaching Assistant Teaching Assistant/Research Assistant

    2018.4 - 2020.9

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    Country:Japan

  • Cairo University Aerospace Engineering Department, Faculty of Engineering Teaching Assistant Teaching Assistant/Assistant Lecturer

    2012.9 - 2017.9

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    Country:Egypt

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Education

  • Kyushu University   Department of Earth System Science and Technology (ESST)   Space Physics and Space Engineering

    2017.10 - 2020.10

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    Country:Japan

    Notes:Doctoral Course

  • Cairo University   Aerospace Engineering Department, Faculty of Engineering   Space Engineering

    2012.10

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    Country:Egypt

    Notes:Master's Degree Program

  • Cairo University   Aerospace Engineering Department, Faculty of Engineering   Aerospace Engineering

    2008.10

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    Country:Egypt

    Notes:Bachelor's Degree program

Research Interests・Research Keywords

  • Research theme: Development of Radiation Belt Simulation Models

    Keyword: Space Weather, Magnetic Storms, South Atlantic Anomaly, Tsyganenko Model, IGRF Model, Test Particle Simulations

    Research period: 2018.10 - Present

  • Research theme: Research on the Evolution and Variability of the South Atlantic Anomaly (SAA)

    Keyword: Paleomagnetism, Geomagnetism, Core-Mantle Boundary

    Research period: 2017.10 - Present

  • Research theme: Research on Particle Dynamics in Substorms from the Magnetotail to the Auroral Regions

    Keyword: Space Physics, Tsyganenko Model, Substorm Current Wedge, Dipolarization, Magnetotail, Auroral Activity

    Research period: 2020.10 - Present

  • Research theme: Spacecraft Design

    Keyword: Space Engineering, Radiation Dose, Radiation Belt Variations

    Research period: 2012.10 - Present

Papers

  • Mid‐Latitude Study of Ionospheric Variation Over Iran Associated With Equatorial Ionization Anomaly (EIA), and Artificial Neural Networks Model Development

    M. Vazifehkhah Hafteh, A. Mahmoudian, A. Yoshikawa, K. Girgis

    Space Weather   22 ( 11 )   2024.11

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    Publishing type:Research paper (scientific journal)   Publisher:Space Weather  

    The ionosphere over Iran is located on the upper edge of equatorial ionization anomaly (EIA). The Equatorial Electrojet (EEJ) as the proxy of temporal evolution of the EIA is explored using the MAGDAS stations near the magnetic equator during quiet and active geomagnetic conditions. The possible impact of EIA on Total Electron Content (TEC) over Iran is investigated. Analyzing data from 140 stations over 7 months, it is found that EEJ influences TEC and its latitudinal penetration. During geomagnetically active days, EEJ's behavior and TEC's latitudinal variations are investigated. Diurnal EEJ patterns and counter electrojets (CEJ) are analyzed, alongside solar wind timing effects on EEJ and TEC using data from stations in Brazil, Peru, the Philippines, and Sri Lanka. Statistical correlations between maximum TEC and parameters extracted from the daily EEJ profile, including EEJ (Formula presented.), integrated EEJ (IEEJ), and IEEJ (Formula presented.) —highlight Iran's position at the EIA's upper edge, indicating high susceptibility to equatorial dynamics. In addition, the Rate of Total Electron Content Index (ROTI) has been analyzed under geomagnetic active conditions. The results demonstrate that ROTI exhibits good agreement with TEC in terms of latitude penetration and the detected gradient in TEC. Employing Artificial Neural Networks (ANN) for local TEC prediction, Iran is segmented into eight regions based on GNSS receiver distribution. Each region's ANN model, trained during the quiet geomagnetic condition, assesses predictability and accuracy. The ANN model demonstrates reliable local TEC forecasting and confirms the direct impact of equatorial dynamics on Iran's ionosphere.

    DOI: 10.1029/2024SW004032

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  • Multi-method Geophysical Observations in Governing Sustainable Development of a Volcano-Hosted Geothermal Area in Cangar, Indonesia

    Sukir Maryanto, Masdukhan A. Widyaminudiin, Daeng A. Suaidi, Cholisina A. Perwita, Sri D. Wuryani, Shuji Abe, Akimasa Yoshikawa, Emad M.H. Takla, Kirolosse M. Girgis, Rendi P. H. Sari, Vanisa Syahra

    Proceedings of International Exchange and Innovation Conference on Engineering & Sciences (IEICES)   2024.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.5109/7323410

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  • Inner Radiation Belt Simulations During the Successive Geomagnetic Storm Event of February 2022 Reviewed

    Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Abraham C.‐L. Chian, Ezequiel Echer

    Space Weather   22 ( 7 )   2024.7   ISSN:1542-7390 eISSN:1542-7390

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:American Geophysical Union (AGU)  

    Abstract

    Starting from 29 January 2022, a series of solar eruptions triggered a moderate geomagnetic storm on 3 February 2022, followed subsequently by another. Despite the typically minimal impact of unintense storms on space technology, 38 out of the 49 Starlink satellites underwent orbital decay, re‐entering Earth's atmosphere. These satellite losses were attributed to enhanced atmospheric drag conditions. This study employs numerical simulations, utilizing our test particle simulation code, to investigate the dynamics of the inner radiation belt during the two magnetic storms. Our analysis reveals an increase in proton density and fluxes during the transition from the recovery phase of the first storm to the initial phase of the second, primarily driven by intense solar wind dynamic pressure. Additionally, we assess Single Event Upset (SEU) rates, which exhibit a 50% increase in comparison to initial quiet conditions.

    DOI: 10.1029/2023sw003789

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  • Terrestrial and Martian space weather: A complex systems approach Invited Reviewed

    Abraham Chian, Rodrigo Miranda, Cesar Bertucci, Xóchitl Blanco-Cano, Joe Borovsky, Sergio Dasso, Ezequiel Echer, Adriane Franco, Kirolosse M. Girgis, J. Américo González-Esparza, Tohru Hada, Hiroshi Hasegawa, Syau-Yun Hsieh, Primoz Kajdič, Christian Mazelle, Erico Rempel, Diana Rojas-Castillo, Beatriz Sánchez-Cano, David Sibeck, Marina Stepanova, José Valdés-Galicia, Juan Valdivia

    Journal of Atmospheric and Solar-Terrestrial Physics   259   2024.6   ISSN:1364-6826 eISSN:1879-1824

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    A comparative overview of Terrestrial and Martian space weather is presented, with emphasis on applying the tools of complexity and nonlinear dynamics to study the spatiotemporal dynamics and structures of sun–Earth and sun–Mars space environment. The following topics are reviewed: (1) complex systems approach to solar atmosphere and solar wind; (2) complex systems approach to planetary bow shock and magnetosphere–ionosphere; (3) Martian space weather, bow shock, and magnetosphere–ionosphere; (4) imaging planetary magnetosphere–ionosphere.

    DOI: 10.1016/j.jastp.2024.106253

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  • Critical analysis of the ULF power depression as a possible Tohoku earthquake precursor Reviewed

    Vyacheslav A Pilipenko, Valery A Martines-Bedenko, Akimasa Yoshikawa, Kirolosse M Girgis

    Earthquake Science   37 ( 5 )   406 - 413   2024.6   ISSN:1674-4519 eISSN:1867-8777

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    Authorship:Last author   Publishing type:Research paper (scientific journal)   Publisher:Earthquake Science  

    Among electromagnetic methods of short-term earthquake prediction, an approach is being actively developed based on the phenomenon of magnetic ultra-low-frequency (ULF) power depression occurring a few days before an earthquake. In particular, a nighttime geomagnetic power depression in the band 0.03–0.05 Hz was observed approximately 5 days before the catastrophic Tohoku 2011 earthquake. To verify the reliability of this method, we performed an extended analysis using data from magnetometer arrays JMA, MAGDAS, PWING, and INTERMAGNET. The selected stations included sites close to the epicenter (<300 km) and remote points (∼10000 km). The band-integrated spectral power of nighttime magnetic noise decreased significantly from March 6–9, several days before the earthquake. However, such variations occur simultaneously not only at nearby stations but also at distant stations. During this event, the ULF power depression was caused by low global geomagnetic activity, as evidenced by the planetary index SME. Thus, the depression of geomagnetic ULF noise cannot be considered a reliable short-term precursor.

    DOI: 10.1016/j.eqs.2024.06.003

    DOI: 10.1016/j.eqs.2024.06.003

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    Other Link: https://www.sciencedirect.com/science/article/pii/S1674451924000636

    Open data URL: https://www.sciencedirect.com/science/article/pii/S1674451924000636

  • Daily geomagnetic variations under variable IMF/solar conditions and their connection with underground conductivity changes in Japan Reviewed

    Emad M. Takla, Akimasa Yoshikawa, Teiji Uozumi, Kirolosse M. Girgis, A. Abdelkader

    Annals of Geophysics   67 ( 1 )   2024.5   ISSN:1593-5213 eISSN:2037-416X

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    Publishing type:Research paper (scientific journal)   Publisher:Instituto Nazionale di Geofisica e Vulcanologia, INGV  

    Fluctuations in Solar Wind (SW) and Interplanetary Magnetic Field (IMF) significantly affect the Geomagnetic Field (GF) measurements particularly during extreme space weather events. The current study investigates the variations of horizontal (H), vertical (Z) geomagnetic components under quiet and disturbed IMF and solar conditions as well as the effect of underground conductivity on the stationary geomagnetic measurements in Japan. Results of data analysis show that the response of the GF to IMF and solar parameters fluctuations is variable. The H- and Z-components were in good harmony with high visual correlation along a latitudinal profile across Japan during quiet times. On the other hand, during the disturbed times related to a Coronal Mass Ejection (CME) launched on 13 May 2005, the GF components varied with the disturbance of IMF and solar parameters. The H-components showed highly correlated variations with a significant reduction along the examined profile due to intensified ionospheric currents, while the Z-components recorded in the northern part of Japan showed abnormal daily variations pattern (positive daily variations) with an enhanced amplitude which is opposite to the normal behavior of daily variations recorded in the central and southern parts of Japan (negative daily variations). The observed enhanced and abnormal daily variation of Z-components in north Japan, which we consider a remarkable observation here, is possibly linked with underground conductivity anomaly in this region.

    DOI: 10.4401/ag-9021

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  • A simplified geospace model for satellite design Reviewed

    Kirolosse M. Girgis, Atef O. Sherif

    Advances in Space Research   73 ( 9 )   4700 - 4710   2024.5   ISSN:0273-1177 eISSN:1879-1948

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Advances in Space Research  

    This study introduced a simplified, integrated computational model to estimate the drag coefficient and surface charging within the plasma wake of Low Earth Orbit (LEO) spacecraft influenced by various solar activities. The model constituted four core modules: a solver for the solar wind-magnetosphere interaction, a magnetosphere-ionosphere coupling for electric field mapping, an ionization model for the F-layer of the ionosphere, and an estimation model for excess satellite drag and plasma wake size. The initial module adopted a simplified 1D ideal Magnetohydrodynamic (MHD) model while incorporating magnetosphere-ionosphere interactions to derive electric field data near Earth's boundary. A simplified ionospheric model for the F-layer was implemented to compute the O+ and electron densities. Subsequently, the spacecraft drag coefficient and the plasma wake size were determined for varying solar wind speed inputs corresponding to quiet, intense, and extreme space weather conditions. In the case of extreme conditions with a solar wind speed of 1000 km/s, the results indicated that the excess satellite drag coefficient and plasma wake size increased to around ten percent.

    DOI: 10.1016/j.asr.2023.12.064

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  • A multi-disciplinary approach to investigate particle dynamics in the South Atlantic Magnetic Anomaly

    Kirolosse Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo

    European Geosciences Union (EGU)   2024.3

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    DOI: 10.5194/egusphere-egu24-1630

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  • LEO Proton Flux Modeling due to Solar Proton Injections during Geomagnetic Storms

    Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Joseph Lemaire, Viviane Pierrard, Susan Samwel

    American Geophysical Union (AGU)   2023.12

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    DOI: 10.22541/au.170328011.17032719/v1

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  • Geomagnetic Storm Effects on the LEO Proton Flux During Solar Energetic Particle Events Reviewed

    Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Viviane Pierrard, Susan W. Samwel

    Space Weather   21 ( 12 )   2023.12   ISSN:1542-7390 eISSN:1542-7390

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    Abstract

    During a few solar energetic particle (SEP) events, solar protons were trapped within the geomagnetic field and reached the outer edge of the inner radiation belt. We reproduced this phenomenon by modeling the proton flux distribution at the Low‐Earth Orbit (LEO) for different geomagnetic conditions during solar particle events. We developed a three‐dimensional relativistic test particle simulation code to compute the 70–180 MeV solar proton Lorentz trajectories in low L‐shell range from 1 to 3. The Tsyganenko model (T01) generated the background static magnetic field with the IGRF (v12) model. We have selected three Dst index values: −7, −150, and −210 nT, to define quiet time, strong, and severe geomagnetic storms and to generate the corresponding inner magnetic field configurations. Our results showed that the simulated solar proton flux was more enhanced in the high‐latitude regions and more expanded toward the lower latitude range as long as the geomagnetic storm was intensified. Satellite observations and geomagnetic cutoff rigidities confirmed the numerical results. Furthermore, the LEO proton flux distribution was deformed, so the structure of the proton flux inside the South Atlantic Anomaly (SAA) became longitudinally extended as the Dst index decreased. Moreover, we have assessed the corresponding radiation environment of the LEO mission. We realized that, for a higher inclined LEO mission during an intense geomagnetic storm (Dst = −210 nT), the probability of the occurrence of the Single Event Upset (SEU) rates increased by 19% and the estimated accumulated absorbed radiation doses increased by 17% in comparison with quiet conditions.

    DOI: 10.1029/2023sw003664

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  • Radiation Analysis of LEO Mission in the South Atlantic Anomaly during Geomagnetic Storm Invited Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo, Akimasa Yoshikawa

    IEEE Journal of Radio Frequency Identification   6   292 - 298   2022.4   eISSN:2469-7281

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    Language:Others   Publishing type:Research paper (scientific journal)   Publisher:IEEE Journal of Radio Frequency Identification  

    We have studied the radiation environment of LEO spacecraft when passing through the South Atlantic Anomaly (SAA) during the geomagnetic storm event of 15 May 2005. The 70-180 MeV proton flux information were numerically obtained from a simulation model of the inner radiation belt. The radiation analysis was consisted of two parts: the estimation of the Single Event Upset (SEU) rates and the absorbed radiation doses. One of the characteristics of the SAA at 800 km altitude during the recovery phase of the geomagnetic storm was the enhancement of its southern proton flux cell. It was found that the excess SEU rates and absorbed radiation doses could reach at least 200 % and 70 % respectively during the recovery phase in comparison to the initial phase of the geomagnetic storm. The estimated radiation results were in a good agreement with observations.

    DOI: 10.1109/JRFID.2022.3163441

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  • Seasonal variation and geomagnetic storm index effects on the proton flux response in the South Atlantic Anomaly by test particle simulations Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo

    Journal of Atmospheric and Solar-Terrestrial Physics   228   105808 - 105808   2022.2   ISSN:1364-6826 eISSN:1879-1824

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    In order to estimate the proton flux variations occurring in the South Atlantic Anomaly (SAA) caused by the geodipole tilting angle and the Dst index variations, we performed three dimensional relativistic test particle simulations to calculate the trajectories of high-energy protons (70–180 MeV), where the static background magnetic field was calculated by the Tsyganenko models T01/TS05 combined with IGRF-12. As various parameters characterize the SAA proton flux, the study considered the maximum proton flux and the area of the SAA. Among many different parameters that define the space weather conditions, we considered the geodipole tilting angle and the Dst index. The numerical results showed that (1) the proton flux intensity was increased in the SAA for small geodipole tilting angles, which was confirmed by observations, and that (2) the proton flux intensity was also increased for significantly low Dst index.

    DOI: 10.1016/j.jastp.2021.105808

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  • Estimation of Single Event Upset (SEU) rates inside the SAA during the geomagnetic storm event of 15 May 2005 Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo

    2021 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)   9   27 - 30   2021.10   ISSN:2380-7636 ISBN:978-0-7381-4451-1

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    Language:Others   Publishing type:Research paper (other academic)   Publisher:IEEE  

    In this study, we assessed the Single Event Upset (SEU) rates of a LEO mission due to its passage in the South Atlantic Anomaly (SAA) during a geomagnetic storm. The South Atlantic Anomaly (SAA) represents a dangerous source of radiation for the LEO operations. Since the space weather continuously affects the inner magnetosphere condition, therefore, the inner radiation belt is subjected to significant variations, in particular during extreme space weather conditions. As the radiation environment depends essentially on the particle flux information, we have developed a numerical model to simulate the inner proton belt dynamics. In our previous work [Girgis et al. (2020b)], the short-Term variations of the inner proton belt was investigated according to the geomagnetic storm event of 15 May 2005 and the kinetic energy range for the implemented protons was from 70 to 180 MeV. The objective of this paper is to extend the previous work by assessing the corresponding SEU rates of the RAM devices mounted in a spacecraft operating in a circular orbit of 850 km, given the proton flux map information as the output results of the inner proton belt numerical model. It was concluded from the inner proton belt simulations during the geomagnetic storm, that the SAA proton flux was significantly enhanced, by > 10 % after the beginning of the storm and during the recovery storm phase. Consequently, the SEU rates were increased by 40 % during the recovery phase of the geomagnetic storm. The earlier and more accurate prediction of the SEU rates can save a LEO satellite mission from unexpected proton-induced single event upset rates during extreme space weather conditions such as geomagnetic storms.

    DOI: 10.1109/wisee50203.2021.9613828

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  • Inner radiation belt simulations of the proton flux response in the South Atlantic Anomaly during the Geomagnetic Storm of 15 May 2005 Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo, Akimasa Yoshikawa

    Journal of Space Weather and Space Climate   11   48 - 48   2021.9   ISSN:2115-7251 eISSN:2115-7251

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    A test particle simulation code was developed to simulate the inner proton belt response during the intense geomagnetic storm of 15 May 2005. The guiding center model was implemented to compute the proton trajectories with an energy range of 70–180 MeV. The time-varying magnetic field model implemented in the simulations was computed by the Tsyganenko model TS05 with the associated inductive electric field. One of the most important features of the low-earth orbit (LEO) environment is the South Atlantic Anomaly, which imposes a dangerous radiation load on most LEO missions. This research aims to investigate the proton flux variations in the anomaly region with respect to space weather conditions. The results showed that during the main phase of the geomagnetic storm, the proton flux in the SAA decreased, whereas, throughout the initial and recovery phases, the proton flux was increased at most of the altitudes. Satellite measurements confirmed numerical results.

    File: swsc210016.pdf

    DOI: 10.1051/swsc/2021031

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  • Solar wind parameter and seasonal variation effects on the South Atlantic Anomaly using Tsyganenko Models Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo

    Earth, Planets and Space   72 ( 1 )   2020.12   ISSN:13438832 eISSN:1880-5981

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media {LLC}  

    We studied the space weather effects on the South Atlantic Anomaly (SAA) magnetic response using Tsyganenko models. For the physical parameters characterizing the SAA, the study considered the minimum magnetic field, the location (longitude and latitude) of the SAA center, and the area of the SAA. Regarding the space weather parameters, we considered the solar wind dynamic pressure, the interplanetary magnetic field components, ByIMF and BzIMF, the Dst index, and the geodipole tilting angle. To study the magnetic field response of the SAA, several different versions of the Tsyganenko models, namely, T96, T01, and TS05, were used to describe the external magnetic field contributions. The main internal magnetic field was calculated by the International Geomagnetic Reference Field (IGRF-12). The magnetic field study of the SAA was realized in long- and short-term (seasonal and diurnal) variations. We found that the Dst index and the geodipole tilting angle were the strongest influencing parameters on the SAA magnetic field response at all altitudes. Moreover, it was revealed that both magnetic poles might be a possible cause of the SAA magnetic field response, resulting from the space weather conditions. Furthermore, the magnetic field behavior of the SAA was affected by hourly variations, where the largest changes occurred at dayside.[Figure not available: see fulltext.].

    File: 0615KG_publication1.pdf

    DOI: 10.1186/s40623-020-01221-2

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    Other Link: http://link.springer.com/article/10.1186/s40623-020-01221-2/fulltext.html

  • Space Weather Effects on Proton Flux Variations in the South Atlantic Anomaly: A Numerical Study performed by Test Particle Simulations

    Kirolosse Girgis, Tohru Hada, Shuichi Matsukiyo

    European Geosciences Union (EGU)   2020.3

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    Language:English   Publishing type:Research paper (conference, symposium, etc.)   Publisher:Copernicus GmbH  

    &amp;lt;p&amp;gt;In this study, we assess the hourly variations of the three-dimensional proton flux distribution inside the South Atlantic Anomaly (SAA) during a geomagnetic storm. We have developed a relativistic three-dimensional guiding center test particle simulation code in order to compute the proton trajectories in a time-varying magnetic field background provided by Tsyganenko model TS05 and the corresponding time-varying inductive electric field. The Dst index is the main input parameter to the simulation model, while the maximum proton flux, the area of the SAA calculated below a selected threshold, and the penetration depth of the protons are the main output variables investigated in this study were. Since the LEO spacecraft and human-related activities are already affected by space weather conditions, the South Atlantic Anomaly (SAA) is also believed to create an additional source of risk. As the radiation environment depends essentially on the particle flux, the objective of this study is to estimate quantitatively the proton flux variations inside the South Atlantic Anomaly (SAA) in quiet and in storm conditions. So far, it was found that after several drift periods, the protons in the South Atlantic Anomaly (SAA) could penetrate to lower altitudes during geomagnetic storm event, and that, the SAA maximum flux value and the corresponding area, varied differently with respect to altitudes. Numerical results were compared with observations by NOAA 17 and RD3R2 instrument mounted on International Space Station (ISS).&amp;lt;/p&amp;gt;

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    DOI: 10.5194/egusphere-egu2020-1551

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  • Long-Term Variations of the Solar Wind Effects on South Atlantic Anomaly (SAA) using Tsyganenko Model Reviewed

    Kirolosse M. Girgis, Tohru Hada

    Proceedings of International Exchange and Innovation Conference on Engineering & Science (IEICES)   4   2018.10

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

    File: 0615KG_publication3.pdf

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Presentations

  • Numerical Modelling of Particle Energization during Dipolarization Substorm Events by Test Particle Simulations International coauthorship

    Kirolosse M. Girgis

    Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS)   2024.11  National Institute of Polar Research (NIPR)

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    Event date: 2024.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Tachikawa, Tokyo   Country:Japan  

    Other Link: https://secure101.jtbcom.co.jp/sgepss2024/session/html/program/pdf/R006/R006-P01.pdf

  • Numerical Modeling of Particle Dynamics during Dipolarization Substorm Events International coauthorship International conference

    Kirolosse M. Girgis

    Association of Asia Pacific Physics Society, Division of Plasma Physics (AAPPS-DPP)  2024.11  Malaysian Institute of Physics

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    Event date: 2024.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:マラッカ州、マレーシア   Country:Malaysia  

    Other Link: https://www.aappsdpp.org/DPP2024/html/3contents/pdf/5045.pdf

  • Predicting The Near-Earth Space Environment Dynamics: Radiation Belt Modeling and Integrated Observations International coauthorship

    Kirolosse M. Girgis

    19th PBASE Meeting  2024.9  Kazuo Shiokawa (Institute for Space-Earth Environmental Research, Nagoya University)

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    Event date: 2024.9

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:Online   Country:Japan  

  • Numerical Modeling of Electron Dynamics during Dipolarization Substorm Events International coauthorship International conference

    Kirolosse M. Girgis

    Japan Geoscience Union (JpGU)  2024.5 

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    Event date: 2024.5

    Language:English   Presentation type:Poster presentation  

    Venue:Makuhari Messe, Chiba   Country:Japan  

  • Simulations of the Inner Proton Belt with Emphasis on the South Atlantic Anomaly Invited International coauthorship International conference

    Kirolosse M. Girgis

    Magnetospheric Science Discussion Group  2024.5  Dr. Shing Fang (NASA)

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    Event date: 2024.5

    Language:English   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:Online  

  • A multi-disciplinary approach to investigate particle dynamics in the South Atlantic Magnetic Anomaly International conference

    Kirolosse M. Girgis

    European Geosciences Union (EGU)  2024.4 

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    Event date: 2024.4

    Language:English   Presentation type:Poster presentation  

    Venue:Vienna   Country:Austria  

    DOI: https://doi.org/10.5194/egusphere-egu24-1630

    Other Link: https://meetingorganizer.copernicus.org/EGU24/EGU24-1630.html

  • Report on Equatorial Magnetic Field Variations based on EE-index: from October 2023 to January 2024

    Kirolosse M. Girgis

    2nd STE (Solar-Terrestrial Environment) Phenomena Report Meeting in 2023  2024.2 

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    Event date: 2024.2

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kyushu University Nishijin Plaza   Country:Japan  

  • Outline of MAGDAS/CPMN Project Activities International coauthorship International conference

    Kirolosse M. Girgis

    International Space Weather Initiative (ISWI) Exhibition  2024.2  Committee on the Peaceful Uses of Outer Space - Scientific and Technical Subcommittee, 61st Session

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    Event date: 2024.2

    Language:English   Presentation type:Poster presentation  

    Venue:UN Vienna Rotunda (C-building)   Country:Austria  

  • Inner Radiation Belt Simulations: Impacts on LEO satellites over the South Atlantic Anomaly (SAA) Invited International coauthorship

    Kirolosse M. Girgis

    Model-Simulation Joint Research Symposium  2023.12  Kobe University

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    Event date: 2023.12

    Language:English   Presentation type:Symposium, workshop panel (nominated)  

    Venue:Hyogo, Kobe   Country:Japan  

  • Inner Radiation Belt Simulation during the Geomagnetic Storm Event of February 2022 International coauthorship International conference

    ギルギス キロロス

    Association of Asia Pacific Physics Society, Division of Plasma Physics (AAPPS-DPP)  2023.11 

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    Event date: 2023.11

    Language:English   Presentation type:Poster presentation  

    Venue:Port-Messe Nagoya   Country:Japan  

    Other Link: https://www.aappsdpp.org/DPP2023/html/3contents/pdf/5473.pdf

  • Report on Equatorial Magnetic Field Variations based on EE-index: from February to October 2023

    Kirolosse M. Girgis

    1st STE (Solar-Terrestrial Environment) Phenomena Report Meeting in 2023  2024.11  Kyoto University

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    Event date: 2024.11

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Kyoto   Country:Japan  

  • The Impact of the Geomagnetic Storm Event of February 2022 on the Inner Radiation Belt by Test Particle Simulations International coauthorship

    Kirolosse M. Girgis

    Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS)   2023.9  Tohoku University

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sendai   Country:Japan  

    Other Link: https://www.sgepss.org/meeting/archive/154/html/program/pdf/R010/R010-23.pdf

  • Geomagnetically Trapped Radiation Belt Modeling

    Kirolosse M. Girgis

    SEE & STP & i-SPES Internal Seminar  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:Kyushu University - Ito Campus   Country:Japan  

  • Electron Dynamics Modelling during Dipolarization Substorm Events by Test Particle Simulations International coauthorship

    Kirolosse M. Girgis

    Japan Geoscience Union (JpGU)  2023.5 

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    Event date: 2023.5

    Language:English   Presentation type:Poster presentation  

    Venue:Makuhari Messe, Chiba   Country:Japan  

  • How do the Geomagnetic Storms affect the LEO proton flux distribution during Solar Energetic Particle events ? International coauthorship

    Kirolosse M. Girgis

    Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS)   2022.5 

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    Event date: 2022.5

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sagamihara City Industrial Hall, Sagamihara City   Country:Japan  

    Other Link: https://www.sgepss.org/meeting/archive/152/html/program/pdf/R010/R010-20.pdf

  • RINKO (Study Group): Derivation of Equation of State and Further Remarks (MHD Simulations)

    Kirolosse M. Girgis

    "Space Environmental Fluid Dynamics" Laboratory- Internal Seminars  2022.10  Prof. Dr. Shuichi Matsukiyo

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    Event date: 2022.10

    Language:English   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:Kyushu University - Chikushi Campus   Country:Japan  

  • Inner Radiation Belt Modeling for Space Weather Applications Invited International coauthorship International conference

    Kirolosse M. Girgis

    Association of Asia Pacific Physics Society, Division of Plasma Physics (AAPPS-DPP)  2022.10 

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    Event date: 2022.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Online  

    Other Link: https://www.aappsdpp.org/DPP2022/html/3contents/pdf/topical/5383.pdf

▼display all

MISC

  • The Impact of the Geomagnetic Storm Event of February 2022 on the Inner Radiation Belt by Test Particle Simulations

    GIRGIS Kirolosse, HADA Tohru, MATSUKIYO Shuichi, MATSUKIYO Shuichi, YOSHIKAWA Akimasa, YOSHIKAWA Akimasa, CHIAN Abraham, CHIAN Abraham

    地球電磁気・地球惑星圏学会総会及び講演会(Web)   154th   2023

Professional Memberships

  • Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS)

  • European Geosciences Union (EGU)

  • Japan Geoscience Union (JpGU)

Academic Activities

  • Screening of Academic Papers International contribution

    Role(s): Review, evaluation, Peer review

    2016.10 - Present

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:11

    Proceedings of International Conference Number of peer-reviewed papers:6

  • Co-convener of the Session: "EMRP3.3: Insights into Geomagnetic Field Variation at Different Time Scales: Data, models and applications with a focus on the South Atlantic Anomaly" International contribution

    Role(s): Panel moderator, session chair, etc., Review, evaluation

    European Geosciences Union (EGU)  2024.4

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    Type:Academic society, research group, etc. 

    Number of participants:21

  • Student Outstanding Presentation Award Judging

    Role(s): Review, evaluation, Peer review

    Japan Geoscience Union (JpGU)  2024.5

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    Type:Academic society, research group, etc. 

    Number of participants:2

  • Student Outstanding Presentation Award Judging

    Role(s): Review, evaluation, Peer review

    European Geosciences Union (EGU)  2024.4

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    Type:Academic society, research group, etc. 

    Number of participants:4

  • Student Outstanding Presentation Award Judging

    Role(s): Review, evaluation, Peer review

    Japan Geoscience Union (JpGU)  2023.5

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    Type:Academic society, research group, etc. 

    Number of participants:2

Other educational activity and Special note

  • 2024  Lecture at Education Method and Practice  Exercises for "Spherical Harmonics"

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    Target students: First-year master's students
    Course name: Earth and Planetary Science and Mathematics
    Lecture date: May 24, 2024
    Lecture language: Japanese

  • 2024  Lecture at Education Method and Practice  An Introduction to Radiation Belt Physics

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    Target students: 3rd year undergraduate students
    Course name: Space and Atmospheric Physics/first semester
    Instructors: Professor Akimasa Yoshikawa and Professor Masakazu Watanabe
    Lecture date: July 28, 2024
    Lecture language: Japanese

Travel Abroad

  • 2024.8

    Staying countory name 1:Australia   Staying institution name 1:The Commonwealth Scientific and Industrial Research Organisation (CSIRO)

  • 2024.3

    Staying countory name 1:Indonesia   Staying institution name 1:Brawijaya University, Faculty of Mathematics and Natural Sciences

  • 2024.2

    Staying countory name 1:Malaysia   Staying institution name 1:University of Science Malaysia, Engineering Campus, School of Aerospace Engineering

    Staying institution name 2:MARA Technological University, Johor Campus, College of Engineering

    Staying institution name 3:The National University of Malaysia, Faculty of Science and Technology, Department of Applied Physics