Computer synthesis of geomagnetic palaeosecular variations
Computer synthesis of geomagnetic palaeosecular variations
复制标题
地磁古世变化的计算机合成
作者：
K. Creer
设计用来合成地磁场的古长期变化的计算机模型，使人们对一些被广泛接受的古地磁学教条产生了怀疑。向西（或向东）漂移不能从地磁矢量的旋转方向唯一地推导出来：在统计分析中使用单位矢量会导致系统误差，这使得古地磁场全球对称性的研究比以前假设的要困难得多。至少有一些地磁“漂移”可以被认为是大幅度的长期变化。
Computer models, designed to synthesize palaeosecular variations of the geomagnetic field, cast doubt on some widely accepted palaeomagnetic dogmas. Westward (or eastward) drift cannot be uniquely deduced from the sense of rotation of the geomagnetic vector: the use of unit vectors in statistical analyses leads to systematic errors which render investigation of the global symmetry of the palaeofield more difficult than previously supposed. At least some geomagnetic ‘excursions’ may be regarded as large-amplitude secular variations.