On the modeling of the wave process near the seam zone of lithospheric structures
UDC
539.3DOI:
https://doi.org/10.31429/vestnik-20-3-66-73Abstract
In order to develop mechanical and mathematical methods for studying deformation-wave processes in the geological environment and the mechanisms of seismicity formation in the seam zones of lithospheric structures, we have solved the problems of modeling the passage of a harmonic signal through a fault. We consider the problem of modeling the passage of a harmonic signal through a fault and conduct a study of the coating-substrate system. Here the deformable foundation (substrate) is described by the model of the linear theory of elasticity. Structures with a fault are considered as a coating, for which the parameters averaged over the thickness are taken. The paper presents an analytical-numerical method for solving boundary value problems of steady-state vibrations in an elastic medium with a coating modeled by extended plates as well as the results of the numerical implementation of the developed algorithms for a problem simulating the dynamics of contacting lithospheric structures under the action of a surface load for one of the possible contact conditions on a fault. The presence of the resonant type structures is usually substantiated by the results of the observatory experiments and the interpretation of geological and geophysical materials. The approach developed in this paper is based on the possibility of using mobile vibroseismic sources to detect faults by producing mono-signals of a certain frequency which can be received at different distances.
Keywords:
medium with coating, harmonic source, rectilinear fault, factorization methodAcknowledgement
References
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