What question did this study set out to answer?

This work aims to identify the predictive parameters for geomagnetic storms based on solar activity during cycles 23 and 24.

June 12, 2026Open Access

Statistical study of predictive parameters for geomagnetic storms during solar cycles 23–24

Key Points

This work aims to identify the predictive parameters for geomagnetic storms based on solar activity during cycles 23 and 24.
Analyzed the correlation between solar wind and magnetic field parameters and geomagnetic indices during solar cycles 23 and 24.
Calculated correlation coefficients and time lags for energy-related parameters and geomagnetic indices SYM-H and AE.
Examined time delays between auroral activity and various solar parameters, assessing durations for different storm types.
Time delays of auroral activity relative to energy parameters and magnetic field Bz ranged from 30 to 60 minutes for storms caused by CME and CIR.
For the ring current, the delays observed were between 6 to 24 hours, indicating varying response times based on storm types.

Abstract

This work focuses on exploring the correlation between solar activity parameters and geomagnetic activity during solar cycles 23 and 24. The analysis includes variables such as solar wind speed VSW, proton density Np, solar wind dynamic pressure PSW, and interplanetary magnetic field components Bz and By, along with energy-related parameters ESW, dφ/dt, ε. Correlation coefficients and time lags were calculated between these solar wind, magnetic field, and energy parameters and geomagnetic indices SYM-H, AE for storms driven by CME and CIR. The analysis of time delays ∆t of auroral activity relative to the energy parameters and the interplanetary magnetic field component Bz for storms of both types has revealed durations ranging from 30 to 60 min, whereas for the ring current the delays ranged from 6 to 24 hrs.

Bookmark

View Full Paper