We investigate the influence of various solar wind parameters on the intensity of the associated major geomagnetic storm. SYM-Hmin was used to indicate the intensity of major geomagnetic storms, while $I(B_{s})$ , $I(E_{y})$ and $I(Q)$ were used to indicate the time integrals of the southward interplanetary magnetic field component ( $B_{s}$ ), the solar wind electric field ( $E_{y}$ ), and Q, which is the combination of $E_{y}$ and the solar wind dynamic pressure, during the main phase of a major geomagnetic storm, respectively. We have found that the correlation coefficient (CC) between the time integral of solar wind parameters and the intensity of an associated major geomagnetic storm has a physical meaning, while the CC between the peak value of a given solar wind parameter and the intensity of an associated major geomagnetic storm has no physical meaning. We used 67 major geomagnetic storms that occurred between 1998 and 2006 to calculate the CC between SYM-Hmin and $I(B_{s})$ , the CC between SYM-Hmin and $I(E_{y})$ , and the CC between SYM-Hmin and $I(Q)$ . The derived CC between $I(B_{s})$ and SYM-Hmin is 0.33, while the CC between $I(E_{y})$ and SYM-Hmin is 0.57, and the CC between $I(Q)$ and SYM-Hmin is 0.86, respectively. These values indicate that $I(B_{s})$ , $I(E_{y})$ and $I(Q)$ contribute in a small, moderate, and crucial way to the intensity of a major geomagnetic storm, respectively. For the solar wind to have a strong geoeffectiveness $B_{s}$ plays a role, together the solar wind speed and density, but also the dynamic pressure > 3 nPa. Large and long duration $B_{s}$ or $E_{y}$ cannot ensure a major geomagnetic storm, if the solar wind dynamic pressure is much lower than 3 nPa.

中文翻译：

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主要地磁风暴强度 ($\mathrm{Dst}\le -100$ nT) 对相关太阳风参数的依赖性

我们研究了各种太阳风参数对相关主要地磁风暴强度的影响。SYM-Hmin 用于指示主要地磁暴强度，而 $I(B_{s})$ 、$I(E_{y})$ 和 $I(Q)$ 用于指示磁暴的时间积分。向南行星际磁场分量 ( $B_{s}$ )、太阳风电场 ( $E_{y}$ ) 和 Q，即 $E_{y}$ 和太阳风动压的组合，在主要地磁暴的主要阶段，分别。我们发现太阳风参数的时间积分与相关的主要地磁暴强度之间的相关系数（CC）具有物理意义，而给定太阳风参数峰值与相关主要地磁风暴强度之间的 CC 没有物理意义。我们使用 1998 年至 2006 年间发生的 67 次主要地磁暴来计算 SYM-Hmin 和 $I(B_{s})$ 之间的 CC、SYM-Hmin 和 $I(E_{y})$ 之间的 CC，以及SYM-Hmin 和 $I(Q)$ 之间的 CC。$I(B_{s})$和SYM-Hmin之间的CC是0.33，而$I(E_{y})$和SYM-Hmin之间的CC是0.57，$I(Q)$之间的CC和 SYM-Hmin 分别为 0.86。这些值表明，$I(B_{s})$、$I(E_{y})$ 和 $I(Q)$ 分别对主要地磁风暴的强度有小、中和关键的贡献. 为了使太阳风具有强大的地球效应，$B_{s}$ 起作用了，太阳风的速度和密度，还有动压 > 3nPa。如果太阳风动压远低于 3 nPa，持续时间大且持续时间长的 $B_{s}$ 或 $E_{y}$ 无法确保发生大地磁暴。