The archaeomagnetic studies carried out at the Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences (IPE RAS) provided an important contribution to the international studies of the main magnetic field of the Earth for the past few thousand years. Extensive data on the intensity of geomagnetic field in the past 8000 years were obtained. Four most representative and long time series of the data have been constructed for Eurasia for the Iberian Peninsula, the Caucasus, Central Asia, and Siberia. Unique studies having no analogues in international research have been carried out into rapid variations in the geomagnetic field intensity with characteristic times starting from several tens of years. Based on the analysis of the international data on the ancient geomagnetic field, the spectrum of the variations in the geomagnetic field intensity with the periods ranging from decades to millennia was established and the characteristics ofthe variations whose superposition can describe the pattern of the changes of the geomagnetic field intensity were determined. It was found out that variations with different characteristic times have a differently directed drift, and the “main oscillation” with a characteristic time of 8000 years has an eastern drift.
Geomagnetic field intensity variations in Western Europe over the past 1100 years