seismic waves

There are four types of seismic waves: primary waves , secondary waves , wave Rayleigh and Love waves. The first two types are called depth waves, because these waves penetrate into the depths of the earth. Rayleigh waves and Love waves called surface waves. They can to propagate on the surface. Given the characteristics of propagation of these waves can be concluded that even at low energies excitation source, Rayleigh waves can propagate at a much greater distance than depth waves, so it would be advisable to use them in security systems.

2-D dynamic problem is considered. The source of seismic waves is modeled by shear dislocation. The medium studied is modeled by the system of plain homogeneous and isotropic layers separated by irregular interfaces. The direct problem solution is obtained and the equation for determining the shape of the interface.

It is considered a propagation of seismic waves in heterogeneous media with a source of one strength and two. It is obtained the waves potentials in a integral transforms and a form of stors.