This study investigated the geomagnetic disturbances and high-speed solar-wind streams (HSSs) during the period of solar storms emitted from coronal holes. The contemplated long-term HSS observations were taken from 1963 to 2016. On the basis of the intensity of geomagnetic activity, solar storms were divided into four groups: weak (−50 nT < D_st < −30 nT), moderate (−100 nT < D_st < −50 nT), intense (−200 nT < D_st < −100 nT) and superstorms (D_st < −200 nT). The relationship between solar plasma/field parameters and geomagnetic disturbances was also studied in the course of HSSs. For this purpose, statistical distributions and correlation analyses have been performed during the passage of HSSs causing geomagnetic disturbances on the individual stages. It was found that variations in the magnitude of the magnetic field B (nT) and V (km/s) relative to disturbance storm time (D_st) index occur oppositely. During intense and super solar storms, the Earth’s magnetic field becomes very weak due to a decrease in the D_st index. The annual time-series analysis suggests that the D_st and \({K}_p\)*10 index are of decreasing trends, whereas Bz (nT) and Ey (mV/m) have increasing trends during the study period. D_st best correlates with the \({K}_p*10\) index with the highest value of correlation coefficient (R) to be observed as 0.54. The value of R is found to be 0.51 between D_st and B (nT) during the passage of HSSs.

本研究调查了日冕洞发出的太阳风暴期间的地磁扰动和高速太阳风流 (HSS)。预期的长期 HSS 观测取自 1963 年至 2016 年。根据地磁活动强度，太阳风暴分为四组：弱 (-50 nT <  D _st  < -30 nT)、中等 (-100 nT <  D _st  < -50 nT)、强烈 (-200 nT <  D _st  < -100 nT) 和超级风暴 ( D _st < -200 nT)。在 HSS 过程中还研究了太阳等离子体/场参数与地磁扰动之间的关系。为此，在 HSS 通过期间对各个阶段造成地磁扰动的过程中进行了统计分布和相关性分析。发现磁场B (nT) 和V (km/s) 相对于扰动风暴时间 ( D _st ) 指数的大小变化相反。在强烈和超级太阳风暴期间，由于D _st指数下降，地球磁场变得非常弱。年度时间序列分析表明D _st和\({K}_p\)*10 指数呈下降趋势，而Bz (nT) 和Ey (mV/m) 在研究期间呈上升趋势。D _st与\({K}_p*10\)指数相关性最好，相关系数 ( R )的最高值被观察为 0.54。在 HSS 通过期间，发现R的值在D _st和B (nT)之间为 0.51 。