Preprints
https://doi.org/10.5194/angeo-2020-35
https://doi.org/10.5194/angeo-2020-35

  25 May 2020

25 May 2020

Review status: this discussion paper is a preprint. It has been under review for the journal Annales Geophysicae (ANGEO). The manuscript was not accepted for further review after discussion.

Variability of Relativistic Electron Flux (E > 2 MeV) during Geo-Magnetically Quiet and Disturbed days: A Case Study

Tulsi Thapa1,2, Binod Adhikari1,3, Prashrit Baruwal4, and Kiran Pudasainee1 Tulsi Thapa et al.
  • 1Departmentof Physics, St. Xavier's College, Maitighar, Kathmandu, Nepal
  • 2National Astronomical Observatories of China, University of Chinese Academy of Sciences, China
  • 3Department of Physics, Patan Multiple Campus, Tribhuvan University, Kathmandu, Nepal
  • 4Central Department of Physics, University Campus, Tribhuvan University, Kirtipur, Nepal

Abstract. We analyzed the relativistic electron fluxes (E > 2 MeV) during three different geomagnetic storms: moderate, intense, and super-intense and one geo-magnetically quiet period. We have opted Continuous wavelet analysis and cross-correlation technique to extend current understanding and of the radiation-belt dynamics. We found that the fluctuation of relativistic electron fluxes dependent basically on prolonged southward interplanetary magnetic field IMF-Bz. Cross-correlation analysis depicted that SYM-H does not show a strong connection either with relativistic electron enhancement events or persistent depletion events. Our result supports the fact that geomagnetic storms are not a primary factor that pumps up the radiation belt. In fact they seem event specific; either depletion or enhancement or slight effect on the outer radiation belt might be observed depending on the event. Solar wind pressure and velocity were found to be highly and positively correlated with relativistic electron. We found that, the count of relativistic electron flux (> 2 MeV) decreases during the main phase of geomagnetic storm with the increase in – from quiet to super intense storm – geomagnetic storm conditions (Table 1). However, Psw was found to be weakly correlated in case of intense storms following an abrupt increase of electron flux for ~ 4 hrs, which is interesting and unique.

Tulsi Thapa et al.

 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Tulsi Thapa et al.

Tulsi Thapa et al.

Viewed

Total article views: 395 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
290 90 15 395 18 11
  • HTML: 290
  • PDF: 90
  • XML: 15
  • Total: 395
  • BibTeX: 18
  • EndNote: 11
Views and downloads (calculated since 25 May 2020)
Cumulative views and downloads (calculated since 25 May 2020)

Viewed (geographical distribution)

Total article views: 336 (including HTML, PDF, and XML) Thereof 333 with geography defined and 3 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 10 May 2021