All Stories

  1. Data Assimilation Into a Machine Learning‐Based Emulator of a Global MHD Simulation for Analyzing the Polar Ionosphere

    Article • Space Weather, November 2025, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  2. Roles of Plasma Sheet Flow, Plasma Sheet Dissipation and the M‐I Coupling in Reproducing the Substorm With the Global Simulation

    Article • Journal of Geophysical Research Space Physics, September 2025, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  3. Formation Mechanism of Fingers That Protrude Eastward From the Io Plasma Disk During the Interchange Instability

    Article • Journal of Geophysical Research Space Physics, July 2024, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  4. Multiple Convection Cells Induced by In‐Front and Off‐Front Interactions Between the Obliquely Northward IMF and the Geomagnetic Field

    Article • Journal of Geophysical Research Space Physics, June 2024, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  5. Inverse and Forward Alfvenic Kármán Vortex and Magnetospheric Coherent Turbulent Structures in 3D Global MHD Simulations

    Article • March 2024, Copernicus GmbH

    Dr. Shigeru Fujita

  6. Machine Learning‐Based Emulator for the Physics‐Based Simulation of Auroral Current System

    Article • Space Weather, January 2024, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  7. Identifying and Visualizing Terrestrial Magnetospheric Topology using Geodesic Level Set Method

    Article • Computer Graphics Forum, November 2023, Wiley

    Dr. Shigeru Fujita

  8. Machine learning-based emulator for the physics-based simulation of auroral current system

    Article • October 2023, Authorea, Inc.

    Dr. Shigeru Fujita

  9. Machine learning-based emulator for the physics-based simulation of auroral current system

    Article • October 2023, Authorea, Inc.

    Dr. Shigeru Fujita

  10. Radial Transport of Io Plasma From the Inner Magnetosphere to the Tail

    Article • Journal of Geophysical Research Space Physics, May 2023, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  11. Machine learning emulator for physics-based prediction of ionospheric response to solar wind variations

    Article • January 2023, Authorea, Inc.

    Dr. Shigeru Fujita

  12. Unified Theory of the Arc Auroras: Formation Mechanism of the Arc Auroras Conforming General Principles of Convection and FAC Generation

    Article • Journal of Geophysical Research Space Physics, August 2022, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  13. Interpretation of the Theta Aurora Based on the Null‐Separator Structure

    Article • Journal of Geophysical Research Space Physics, August 2022, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  14. Two current systems in the preliminary phase of sudden commencements in the magnetosphere

    Article • Earth Planets and Space, April 2022, Springer Science + Business Media

    Dr. Shigeru Fujita

  15. Two Current Systems in the Preliminary Phase of Sudden Commencements in the Magnetosphere

    Article • January 2022, Research Square

    Dr. Shigeru Fujita

  16. Roles of the M‐I Coupling and Plasma Sheet Dissipation on the Growth‐Phase Thinning and Subsequent Transition to the Onset

    Article • Journal of Geophysical Research Space Physics, December 2021, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  17. Development of the Substorm as a Manifestation of Convection Transient

    Article • Journal of Geophysical Research Space Physics, October 2021, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  18. Global Simulation of the Jovian Magnetosphere: Transitional Structure From the Io Plasma Disk to the Plasma Sheet

    Article • Journal of Geophysical Research Space Physics, June 2021, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  19. Formation and Release of the Harang Reversal Relating With the Substorm Onset Process

    Article • Journal of Geophysical Research Space Physics, January 2021, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  20. Reproduction of Ground Magnetic Variations During the SC and the Substorm From the Global Simulation and Biot‐Savart's Law

    Article • Journal of Geophysical Research Space Physics, February 2020, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  21. Quiescent Discrete Auroral Arcs: A Review of Magnetospheric Generator Mechanisms

    Article • Space Science Reviews, December 2019, Springer Science + Business Media

    Dr. Shigeru Fujita

  22. Magnetosphere‐Ionosphere Convection Under the Due Northward IMF

    Article • Journal of Geophysical Research Space Physics, August 2019, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  23. Development of Magnetic Topology During the Growth Phase of the Substorm Inducing the Onset of the Near‐Earth Neutral Line

    Article • Journal of Geophysical Research Space Physics, July 2019, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  24. Magnetospheric Dynamo Driving Large‐scale Birkeland Currents

    Article • Journal of Geophysical Research Space Physics, June 2019, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  25. Response of the magnetosphere–ionosphere system to sudden changes in solar wind dynamic pressure

    Article • Reviews of Modern Plasma Physics, May 2019, Springer Science + Business Media

    Dr. Shigeru Fujita

  26. Cooperatives Roles of Dynamics and Topology in Generating the Magnetosphere‐Ionosphere Disturbances: Case of the Theta Aurora

    Article • Journal of Geophysical Research Space Physics, December 2018, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  27. Time Domain Simulation of Geomagnetically Induced Current (GIC) Flowing in 500‐kV Power Grid in Japan Including a Three‐Dimensional Ground Inhomogeneity

    Article • Space Weather, December 2018, American Geophysical Union (AGU)

    Dr. Shigeru Fujita

  28. Evaluation of the Sq Magnetic Field Variation Calculated by GAIA

    Article • Space Weather, April 2018, American Geophysical Union (AGU)

    Shigeru Fujita, Yasunobu miyoshi, Dr. Shigeru Fujita

  29. A Magnetohydrodynamic Modeling of the Interchange Cycle for Oblique Northward Interplanetary Magnetic Field

    Article • Journal of Geophysical Research Space Physics, January 2018, Wiley

    Dr. Shigeru Fujita