When the pressure increases, as occurred during the Bastille Day storm, the dayside magnetopause is pushed closer to the earth, sometimes by as much as 26,000 kilometers.

• 在地球昼侧，磁层顶通常在距地球中心64000公里附近，但磁层顶的位置会随太阳风的压力而改变，当太阳风压力变大，譬如在巴士底日太空风暴的期间，昼侧的磁层顶就被推向地球，有时可推近26000公里之多。