Fig. 1
Left Energy densities for the three orthogonal directions. Energies E 1, E 2, and E 3 with black discontinuous line. Right Energy densities associated with incoming P, SV, SH, and Rayleigh waves. Both plots are against normalized depth x 3/λ R, where x 3 = vertical coordinate pointing toward the depth, λ R = wavelength of Rayleigh waves. Left gray continuous comes from the imaginary part of Green’s function components at the source from Weyl type integral representation. In the right panel, the cases of SV and Rayleigh waves appear with discontinuous lines (from Perton et al. 2009, with the permission of AIP Publishing). We normalize the amplitudes to match the energy density in deep space