Abstract

Nonlinear Seismology: Experimental Structure

O.B.Khavroshkin, V.V.Tsyplakov (Schmidt United Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia)

e-mail: khavole@uipe-ras.scgis.ru

The prevalence of nonlinear physics at the present stage of development of natural sciences ensures in the theoretical plan operation of any models of nonlinear seismology in every respect. Therefore shaping of last from experiment becomes preferable. Let's present a first stage of experimental search, investigation and analysis of nonlinear seismic effects, processes and medium as formative structure of nonlinear seismology. Basic elements of such structure: (1) seismic acoustic emission as component of regional high-frequency seismic noise radiated by geological medium of lithosphere of the Earth and governed characteristically by level of energy action on medium of processes, deforming the Earth, and structural - geological features of medium, thus such emission component is the integrated response to every strains, simultaneously acting on region; (2) the statistical characteristics of seismic acoustic emission can be contained hidden periodicities which correspond rhythms of processes deforming geological structure of tested region (the lunar-solar tides, the Earth.s proper oscillations, technique effects etc.), that is, the regional noises are modulated by changes of emission component; (3) seismic wave fields, wave packets and waves from the deterministic sources (vibrators, hydroelectric power stations, the explosions etc.) show properties, which are also defined by concepts of wave dynamics and theory of open systems: three-frequency interactions, radiative forces, elements of chaos and self-organizing, action of a signal on a noise field; (4) observation of some of the mentioned effects of more low-power state for natural and technique seismic noise fields and processes.

Section : 6