How space weather powers auroras in the sky and threatens power grids on the ground

When an aurora lights up the sky, electric currents can also flow through the ground beneath your feet.

太空天气中的亚暴能在磁尾释放能量后几分钟内扰动地面磁场，进而感应出可能损害电网的电流。研究结合卫星与地面磁力仪数据，揭示极光与地面磁扰动的时序关系，并指出影响强弱取决于纬度与当地地质条件。