Impact of solar wind parameters on geomagnetic activity during the main phase of strong magnetic storms

被引：0

作者：

Boroyev, R. N. ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Yu G Shafer Inst Cosmophys Res & Aeron, Siberian Branch, 31 Lenin Ave, Yakutsk 677027, Russia

[2] MK Ammosov North Eastern Fed Univ, 58 Belinsky Str, Yakutsk 677027, Russia

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2025年 / 269卷

关键词：

Magnetic storm; Auroral activity; Geomagnetic index; Solar wind; Electric field; IMF Bz; INTERPLANETARY CONDITIONS; AURORAL ACTIVITY; RING CURRENT; FIELD; CIR; DST; DEPENDENCE; SHEATH; INDEX;

D O I：

10.1016/j.jastp.2025.106485

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The relationship between the mean values of auroral activity indices and SW parameters during the periods of strong magnetic storms (|Dstmin| = 100 +/- 10 nT) induced by SW different types is studied. 24 magnetic storms induced by (6) Sheath, (9) CIR, and (9) ICME events are selected for the period 1990-2020. It is shown that the against the background of the dependence of the auroral activity indices (AE, Kp and SME) on the SW electric field, the value of AE, Kp and SME indices is impacted by the IMF sigma & Vcy;. The geomagnetic indices increase with growth of the IMF sigma B magnitude. It is found that Sheath events have high geomagnetic index values in contrast to CIR and ICME. The SW type determines the relationship between geomagnetic indices and IMF sigma & Vcy;. The coefficient of correlation between IMF sigma B and Pd for Sheath (r = 0.65) has a close value with the correlation coefficients for the CIR and ICME events.

引用

页数：6

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