CME-Driven Interplanetary Shocks and Their Function for Monitoring Geomagnetic Storms and Forbush Decreases During Solar Cycle 25's Peak Phase

  • Unique Paper ID: 192713
  • Volume: 12
  • Issue: 9
  • PageNo: 2117-2119
  • Abstract:
  • The main causes of the major space weather disturbances that greatly affect the intensity of galactic cosmic rays close to Earth are interplanetary shocks and Coronal Mass Ejections (CMEs). The combined effects of interplanetary shocks and CMEs on Forbush Decrease (FD) events and geomagnetic storms during Solar Cycle 25's peak phase (2023–January 2026) are examined in this study. We conduct a comparative and correlative analysis of a subset of CME-driven shock events using multi-instrument datasets such as geomagnetic indices (Dst and Kp), OMNI solar wind parameters, and neutron monitor observations. The findings demonstrate that strong interplanetary shocks coupled with fast CMEs (>1000 km/s) result in intense geomagnetic storms (Dst < -150 nT) and large-amplitude Forbush Decreases (5–15%). The study also shows that the FD magnitude, IMF Bz southward component, and shock strength are strongly correlated.

Copyright & License

Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{192713,
        author = {Dr. Preeti Pandey and Varunendra Shukla and Prachi Rai},
        title = {CME-Driven Interplanetary Shocks and Their Function for Monitoring Geomagnetic Storms and Forbush Decreases During Solar Cycle 25's Peak Phase},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {12},
        number = {9},
        pages = {2117-2119},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=192713},
        abstract = {The main causes of the major space weather disturbances that greatly affect the intensity of galactic cosmic rays close to Earth are interplanetary shocks and Coronal Mass Ejections (CMEs). The combined effects of interplanetary shocks and CMEs on Forbush Decrease (FD) events and geomagnetic storms during Solar Cycle 25's peak phase (2023–January 2026) are examined in this study. We conduct a comparative and correlative analysis of a subset of CME-driven shock events using multi-instrument datasets such as geomagnetic indices (Dst and Kp), OMNI solar wind parameters, and neutron monitor observations. The findings demonstrate that strong interplanetary shocks coupled with fast CMEs (>1000 km/s) result in intense geomagnetic storms (Dst < -150 nT) and large-amplitude Forbush Decreases (5–15%). The study also shows that the FD magnitude, IMF Bz southward component, and shock strength are strongly correlated.},
        keywords = {Forbush Decrease, Coronal Mass Ejections, Interplanetary Shocks, Cosmic Rays, Geomagnetic Storms, Solar Cycle 25, Space Weather.},
        month = {February},
        }

Cite This Article

Pandey, D. P., & Shukla, V., & Rai, P. (2026). CME-Driven Interplanetary Shocks and Their Function for Monitoring Geomagnetic Storms and Forbush Decreases During Solar Cycle 25's Peak Phase. International Journal of Innovative Research in Technology (IJIRT), 12(9), 2117–2119.

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