Principles of the magnetic methods in geophysics / Основы магнитных методов в геофизике

Magnetic methods are widely used in exploration, engineering, borehole, and global geophysics and the subjects of this monograph are the physical and mathematical principles of these methods regardless of the area of application. The first chapter is devoted entirely to the magnetic field caused solely by conduction currents. Beginning with Ampere’s law we analyze the force of interaction between currents and then introduce the concept of the magnetic field and discuss its fundamental features. In order to simplify a study of magnetic field the vector potential is introduced. Special attention is paid to the system of equations of the magnetic field at regular points and at places where surface density of currents differs from zero. We also consider several examples of the field behavior because of its relationship to the application of magnetic methods in geophysics. The second chapter describes in detail the theory of the magnetic field in the presence of magnetic medium. There is a section where we study distribution of magnetization currents and association between these currents and the vectors of the inductive and remanent magnetization. <...>