Variational principle for Rayleigh wave ellipticity

Details Variational principle for Rayleigh wave ellipticity Variational principle for Rayleigh wave ellipticity

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009geoji.179.1658t&link_type=abstract

Geophysical Journal International, Volume 179, Issue 3, pp. 1658-1668.

Astronomy and Astrophysics

Astronomy

Surface Waves And Free Oscillations, Seismic Tomography, Theoretical Seismology, Crustal Structure

Scientific paper

Rayleigh wave ellipticity has high sensitivity to shallow depth and contains complementary information to phase and group velocity data whose sensitivity extends to deeper region. The inversion of this parameter has often been conducted by using numerically derived depth sensitivity kernels. We present compact formulas based on a variational principle which includes both volumetric seismic velocity perturbations and boundary perturbations. Use of this formula can speed up the inversion process considerably.

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