Улан-Батор, Монголия
Институт астрономии и геофизики Монгольской академии наук
Пекин, Китайская Народная Республика
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.
correlation coefficient, solar wind, interplanetary magnetic field, coronal mass ejection, corotating interaction region, geomagnetic activity
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