Analysis of the Informativity of the Earth's Magnetic Field in Near-Earth Space

This paper presents the results of a study of the informativity of the anomalies of the modulus and components of the Earth's magnetic field in near-Earth space in the altitude range from 300 to 800 km. Magnetic anomalies are calculated according to a three-dimensional component model of the Earth's magnetic field of the St. Petersburg Branch of the Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation. For comparison with the empirical data obtained by the CHAMP and Swarm satellites, the magnetic anomalies and their gradients were calculated according to the component model for altitudes of 400 and 450 km. To reveal the structural features of the lithosphere of magnetoactive zones observed in near-Earth space, deep sections were constructed based on magnetic anomalies, gravity anomalies, and seismological data. The results of the study of magnetic anomalies in near-Earth space are of scientific, practical, and applied importance for solving exploratory geological and geophysical problems and issues of spacecraft navigation.