It is what is called a dipole field with a north and south pole 它就是所谓的偶极场? ?具有一个北极和一个南极。
A . c . electric dipole field 交流电偶极场
Earlier this year gauthier hulot of the paris geophysical institute and his colleagues used satellite measurements to track changes in the field ' s behavior near the top of the core 今年( 2002 )年初,法国巴黎地球物理研究院的余洛和他的同事,利用卫星测量来追踪接近地核表层的磁偶极场的变化。
The good news is that any disappearance of the dipole will be temporary , the halfway point along a southward swing that would leave compass needles pointing toward antarctica rather than the frozen north 值得庆幸的是,磁偶极场的消失是暂时性的,只是一种磁偶极场在做南北方向对调时,在过程中间所发生的现象。
Hulot ' s team argues that the growth of these reversed patches , presumably eddies that are working against the primary motion of the core , can explain the current decline in the dipole field 余洛的研究小组认为,假如此区块是一种与主要地核运动相抗衡的漩涡区,那麽此区块的增长便可以解释现今磁偶极场的衰减现象了。