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首页> 外文期刊>International Journal of Physical Sciences >Moderately intense geomagnetic storms and their relation with coronal mass ejections and interplanetary magnetic field
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Moderately intense geomagnetic storms and their relation with coronal mass ejections and interplanetary magnetic field

机译：中强地磁暴及其与日冕物质抛射和行星际磁场的关系

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An investigation of moderately intense geomagnetic storms (50 nT&Dst≥-150 nT) observed between 1997 and 2007 with coronal mass ejections (CMEs) and interplanetary magnetic field was carried out. We found that 54.91% geomagnetic storms are associated with halo and partial halo coronal mass ejections. The association rates of halo and partial halo coronal mass ejections were found to be 63.16 and 36.84% respectively. It was also inferred that CMEs related geomagnetic storms are associated with X-ray solar flares of different categories. The association rates of class X, class M, class C and class B X-ray solar flares were 13.67, 26.32, 44.21 and 15.79% respectively. Furthermore, it was concluded that moderately intense geomagnetic storms are closely related to disturbances in interplanetary magnetic field. Positive correlation with correlation coefficient 0.48 was found between magnitude of moderately intense geomagnetic storms and maximum (peak) value of average interplanetary magnetic field. The correlation coefficient of 0.40 between magnitude of moderately intense geomagnetic storms and magnitude of associated jump in interplanetary magnetic field (JIMF) events was obtained. Positive correlation with correlation coefficient 0.49 was also found between magnitude of moderately intense geomagnetic storms and magnitude of maximum (peak) value of southward component of interplanetary magnetic field. The correlation coefficient of 0.37 between magnitude of moderately intense geomagnetic storms and magnitude of southward component of interplanetary magnetic field was also obtained.
机译：对1997年至2007年间观测到的具有日冕质量抛射（CME）和行星际磁场的中等强度地磁风暴（50 nT＆ Dst＆ge; -150 nT）进行了研究。我们发现54.91％的地磁风暴与光晕和部分光晕冠冕物质抛射有关。晕轮和部分晕轮冠状物质抛射的结合率分别为63.16％和36.84％。还可以推断出，与CME相关的地磁风暴与不同类别的X射线太阳耀斑有关。 X级，M级，C级和B级X射线太阳耀斑的结合率分别为13.67％，26.32、44.21和15.79％。此外，得出的结论是，中等强度的地磁风暴与行星际磁场的扰动密切相关。在中等强度的地磁风暴的大小与平均行星际磁场的最大值（峰值）之间发现正相关，相关系数为0.48。获得了中等强度地磁暴的幅度与行星际磁场（JIMF）事件中相关跃变幅度之间的相关系数0.40。在中等强度的地磁风暴的大小与星际磁场南向分量的最大值（峰值）的大小之间也发现了正相关，相关系数为0.49。得到的中等强度地磁暴的幅度与行星际磁场南分量的相关系数为0.37。

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