Nonlinear dynamics of seismic vibrators

Monitoring of the natural and technogenic environment is one of the most important priority directions in the development of science and technologies. A major problem here is the prediction and prevention of ecological risks for the environment caused by the action of destructive natural and technogenic events and processes. For this purpose a fundamentally new, ecologically clean, and high-resolution method is active vibrational monitoring. It involves tracking of the temporal dynamics of boundary lithosphere-atmosphere” media in response to the action of metrologically precise sounding oscillations of seismic vibrators. The process of excitation of wave fields by such vibrators is accompanied by complex physical phenomena in the source zone, which continue at considerable distances from it. These include nonlinear processes of interaction between the source and the medium and those of radiation of conjugate wave oscillations (seismic, acoustic, electric, and electromagnetic ones). Analysis of these phenomena and estimation of their quantitative characteristics are of purely scientific and practical value. In this paper, original results of experiments aimed at solving the above problems are presented.