A new formalism for the effect of lateral heterogeneity on normal modes and surface waves-II. General anisotropic perturbation

@inproceedings{Romanowicz1988ANF,
  title={A new formalism for the effect of lateral heterogeneity on normal modes and surface waves-II. General anisotropic perturbation},
  author={Barbara Romanowicz and Roel Snieder},
  year={1988}
}
SUMMARY Using an operator formalism and simple geometrical relations on the sphere, we have derived the interaction terms for the free oscillations of an aspherical anisotropic Earth, as needed for seismogram calculations in the framework of first-order perturbation theory, without needing to expand the model perturbations into spherical harmonics. The expressions obtained are compact and free of summation over azimuthal orders. In the case of transverse isotropy they are particularly simple… CONTINUE READING

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