SS-wave sensitivity to upper mantle structure: Implications for the mapping of transition zone discontinuity topographies

Details SS-wave sensitivity to upper mantle structure: Implications for the mapping of transition zone discontinuity topographies SS-wave sensitivity to upper mantle structure: Implications for the mapping of transition zone discontinuity topographies

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30k..44z&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 11, pp. 44-1, CiteID 1590, DOI 10.1029/2003GL017223

Physics

8

Seismology: Body Wave Propagation, Seismology: Lithosphere And Upper Mantle, Tectonophysics: Tomography

Scientific paper

Studies of the depths of the upper mantle discontinuities have relied on the differential travel times between the SS wave and its precursors. We examine the effect of velocity heterogeneities on these differential travel time data. Ray-theory, which is used to correct these data for the effect of velocity heterogeneities, is shown to be inaccurate if the characteristic heterogeneity length scales are similar to those seen in regional models or if the station is near the SS wave radiation nodal plane.

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