The paper presents the views of 2-D interpretation magnetotelluric (MT) data that are characteristic Russian school. Discussing strategy MT data, we have to answer three questions. In decreasing order importance, these questions as foloows. (1) Which field mode is more sensitive near-surface and deep structures targets surveys? (2) robust 3-D effects caused by real geological bodies? (3) susceptible static shift induced inhomogeneities?

It is widely believed that the Tikhonov-Cagniard model can be applied in magnetotelluric method of exploration geophysics if horizontal field changes are sufficiently slow. Actually, this overly restrictive and may give rise to unjustified doubts about validity model. This paper shows condition determining applicability linearity changes, rather than slowness these changes. considerably extends sphere practical applications

The quasi‐linear approximation for electromagnetic forward modeling is based on the assumption that anomalous electrical field within an inhomogeneous domain linearly proportional to background (normal) through reflectivity tensor λ⁁. In original formulation of approximation, λ⁁ was determined by solving a minimization problem integral equation scattering currents. This approach much less time‐consuming than full method; however, it still requires solution corresponding system linear...

We introduce a new approach to 3-D electromagnetic (EM) modeling for models with large conductivity contrast. It is based on the equations integral current within cells of discretization grid, instead electric field or themselves, which are used in conventional integral-equation method. obtain these currents by integrating density over each cell. The can be found accurately bodies any conductivity. As result, method applied, principle, high-conductivity At same time, knowing inside anomalous...

In this paper, we study the anisotropy effect in IP data context of generalized effective‐medium theory induced polarization (GEMTIP). The conductivity defined by GEMTIP model, a general case, is represented tensor function. This tensorial property provides new insight on phenomenon effect. As an example, consider multiphase composite polarized model rock formation with ellipsoidal inclusions. We demonstrate that effective may be anisotropic, even if host and all grains are electrically isotropic.

Since the discovery of electromagnetic waves and formulation Maxwell's equations, theory has become one most important branches mathematical physics. The variety problems in electrodynamics often stimulated raising development new Examples are study interior structure earth by methods, which promoted general inverse problems; propagation non-homogeneous media, led to diffraction; transmission ultra-high frequency waves, wave-guide oscillations; synthesizing systems antennae various...