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DYNAMICS OF THE INNER MAGNETOSPHERE UNDER PROLONGED SOUTHWARD IMF CONDITIONS

Authors

  • Dr. Hafsa Javed

    Department of Space Science, Institute of Space Technology (IST), Islamabad, Pakistan.
    Author

DOI:

https://doi.org/10.71465/jgs31

Keywords:

Inner magnetosphere, Southward IMF, Plasmapause erosion, Ring current dynamics

Abstract

 

The dynamics of the inner magnetosphere are significantly influenced by prolonged intervals of southward interplanetary magnetic field (IMF Bz < 0), which enhance magnetic reconnection and plasma convection from the solar wind. This study investigates the structural changes and particle dynamics within the inner magnetosphere during sustained southward IMF episodes by analyzing in-situ data from Van Allen Probes, THEMIS, and geomagnetic indices (Dst, AE). Key phenomena including plasmapause erosion, ring current intensification, and radiation belt enhancements are evaluated across multiple storm events from 2013 to 2020. The results underscore the non-linear coupling between solar wind parameters and magnetospheric response, providing insight into geomagnetic storm development and space weather forecasting.

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Published

2025-07-27