Wavelet analysis of temporal and spatial parameters of the 60-year variation in the geomagnetic field

A wavelet analysis and statistical processing of its results have been performed for the series of geomagnetic data at several observatories in Europe, Asia, and North America. It has been noted that the sources of 60-year variations in the geomagnetic field can be divided into two classes with respect to spatial scales. It has been indicated that the sources of these variations are anisotropic. It has been proposed that these variations can be caused by the reconstruction of motions on the surface of the Earth’s liquid core.