至今获得的资料似乎显示了地球磁场在时间上的变化是杂乱无章的 :它持续无序地改变其强度、方向和规模———从个别的世纪振荡至数百万年的倒转 ,并出现部分地区磁极的变化。但是从英国利兹大学的Ｄ．Ｇｕｂｂｉｎｓ对２个在地球上彼此相隔很远地点的研究组所获得的古气候资料 The information so far obtained seems to indicate that the temporal changes in the earth's magnetic field are disorganized: it continues to disorderly change its intensity, direction and scale - from the oscillation of individual centuries to millions of years of reversal and the emergence in some areas Pole changes. But from the University of Leeds in England. Gubbins palaeoclimatic data obtained from two study groups spaced apart from each other on Earth