Multimode surface wave sensitivity kernels in radially anisotropic earth media

Details Multimode surface wave sensitivity kernels in radially anisotropic earth media Multimode surface wave sensitivity kernels in radially anisotropic earth media

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009geoji.176..865z&link_type=abstract

Geophysical Journal International, Volume 176, Issue 3, pp. 865-888.

Astronomy and Astrophysics

Astronomy

4

Surface Waves And Free Oscillations, Seismic Anisotropy, Seismic Tomography, Theoretical Seismology, Wave Scattering And Diffraction

Scientific paper

I calculate three-dimensional (3-D) sensitivity kernels of multimode surface wave observables in radially anisotropic earth media for perturbations in wave speeds αH, αV, βH, βV and η as well as in density ρ. The 3-D phase-delay and amplitude kernels are formulated based upon Born approximation in the framework of surface wave mode summation, fully accounting for cross-branch mode coupling. Long-period, multimode, surface wave sensitivity kernels show structures of multiple reflected body waves. Jean's relation can be applied to quantify the `mode-ray duality' of multimode surface waves and provide guidelines for measurement-window determination.

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