Comment on ``Improved inversion for seismic structure using transformed, S-wavevector receiver functions: Removing the effect of the free surface'' by Anya Reading, Brian Kennett, and Malcolm Sambridge

Details Comment on ``Improved inversion for seismic structure using transformed, S-wavevector receiver functions: Removing the effect of the free surface'' by Anya Reading, Brian Kennett, and Malcolm Sambridge Comment on ``Improved inversion for seismic structure using transformed, S-wavevector receiver functions: Removing the effect of the free surface'' by Anya Reading, Brian Kennett, and Malcolm Sambridge

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3124609s&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 24, CiteID L24609

Physics

6

Seismology: Body Wave Propagation, Seismology: Lithosphere And Upper Mantle, Seismology: Theory And Modeling, Seismology: General Or Miscellaneous, Seismology: Instruments And Techniques

Scientific paper

Reading et al. [2003] propose a transformation which takes the rectangular coordinate system ZRT to the `skew' PSH system. The transformation isolates P-, SV- and SH-waves of same slowness on the P-, S- and H-component, respectively, and removes the free surface effect. We have the following comments to their article: A) The transformation matrix in their paragraph has misprints propagated to the text in their Figure 1c. B) The LQT rotation [Vinnik, 1977] has no leakage of P-displacement into the Q-component, although a minor SV-leakage is present on the L-component. C) The differences between PSH- and ZRT-receiver functions are large, whereas the differences between PSH- and LQT-receiver functions are very small in theory and hardly ever significant in practice.

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