THE NATURE OF LONGPERIOD ANOMALOUS VARIATIONS OF THE GEOMAGNETIC FIELD
As a result of long-term studies of variations in the module of the geomagnetic fi eld T in the territory of the South Ural, the Bashkir anomaly of the secular variation was discovered. Further studies made it possible to suggest the electrokinetic nature of the Bashkir anomaly, that is, its connection with the directed fl ow of underground fl uid. The purpose of this work is to show the relationship between the observed anomalous geomagnetic variations and the dynamics of permeable zones of the Earth’s crust. In our case, this is the establishment of patterns of changes in the magnetic fi eld and the processes that accompany underground nuclear explosions. The simulation of the magnetic fi eld was carried out for subhorizontal currents of an electrokinetic nature, caused by the appearance of a runoff zone in the earth’s crust. Particular attention is paid to understanding the conditions under which advective effects signifi cantly perturb geophysical fi elds.