Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998geoji.133...31g&link_type=abstract
Geophysical Journal International, Volume 133, Issue 1, pp. 31-43.
Physics
21
Scientific paper
We modify the receiver-functions stacking technique known as velocity spectrum stacking (VSS) so as to estimate combinations of velocity model (VP and VS ) and depth that stack the Ps conversion from upper-mantle discontinuities most coherently. We find that by estimating the differences in the depths to the 660 and 410km discontinuities using velocities that maximize the stacked amplitudes of P410s and P660s phases we can estimate the thickness of the transition zone more accurately than the depths to either of these discontinuities. We present two examples indicating that the transition zone beneath Obninsk, Russia, is 252+/-6km thick and that beneath Pasadena, California, is only 220+/-6km thick.
Bernard Minster J.
Gurrola Harold
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