INTERACTION OF PARAMETERS OF GEOPHYSICAL PROCESSES IN DEEP STRUCTURES OF THE EARTH MODELING

Abstract

Main problems of tectonics are considered and review of the main problematic questions governed ways of the investigations of the physical picture not only for the structures but also for the processes and interactions in the deep shells of our planet are made. Depending on the convergence speed, age of the lithosphere and direction of the moving plates that interacted several subduction zones are distinguished. It is pointed out that investigation of the deep structure, composition and geodynamics of the continental and oceanic lithosphere gives the possibility to distinguished the system connected with global processes of Earth’s development (rifts, uncompensated deeps, continents, oceans). Direct and immediate measurements by modern geodetic instruments make it possible to build an objective model of modern movements of the earth's crust. The basis for such a discussion is the idea of the principle of the similarity of a number of physical phenomena at different scale levels of the structural hierarchy of the tectonic structures of the Earth's lithosphere. The patterns of formation, accumulation and development of cracks are similar for different scale levels. It is necessary to identify the influence of each of the listed factors separately, which, of course, is possible only by illustrating cases in which the impact of all other factors is weakened. The main purpose here is to construct a model for distributing the density of the medium using the information obtained during the analysis of other geophysical fields. To study the same geological environment in a seismic field, the most important factor is the formation of its seismic image. The task of constructing a high-speed environment model plays only an auxiliary role, since the seismic imaging approach is much higher than the approach of a seismic model. In general, it can be noted that the impact of the scale of research on the role of their various tasks is the ratio of the size of the object under study with the size of objects available for their direct observation. To do this, it is not enough to construct physical models of investigated objects, and their high-resolution image in geophysical fields is required and their geological classification in these fields.

In computer simulation techniques, the influence of such rheological parameters of the geological environment as layering, anisotropy, ductility and viscosity must be taken into account, at the local and regional levels, in relation to the tasks of tectonophysics. It is clear that this pattern is manifested differently when using fields of different types. However, it can be traced in one way or another in gravimetric, magnetometric, seismometric, and electrometric studies. For example, in regional studies, the main goal of the gravimetric method is to construct a dense model of the crust. In the study of local structures, the possibility of quantitative interpretation is reduced due to the greater complexity of the investigated objects, namely  because of their mutual influence in the gravitational field. Here, the situation, as a rule, can change the use of materials of other geophysical methods, that is, complexing various geophysical methods.

Key words: gravity, thermodynamics, tectonics, structure of the Earth, modeling, deep processes, physical modeling, deep structure, geodynamics of lithosphere