When reconnection is initiated on the dayside magnetopause , the interconnected imf and geomagnetic field lines are swept back by the solar wind over the earth ' s poles , pouring energy into the northern and southern lobes of the long magnetotail on the nightside 当磁力线重连在昼侧的磁层顶上开始发生,连在一起的imf和地球磁场磁力线便被太阳风往后吹,扫过地球南北极,把能量灌入长磁尾的南北两叶。