Anticorrelated Seismic Velocity Anomalies from Post-Perovskite in the
Lowermost Mantle
Alexander R. Hutko, Thorne Lay, Justin Revenaugh, Edward J. Garnero
Supporting Online Material
This supplement contains:
Materials and Methods
Figs. S1 to S6
Download supplement
This file is in Adobe Acrobat PDF format.
Other Supporting Online Material for this manuscript includes the following:(available at
www.sciencemag.org/cgi/content/full/320/5879/1070/DC1)
Movie S1
Movie s1
Animation of a suite of cross-sections through the migration volume for the data (left
column), synthetics for the preferred velocity models (second column) and synthetics for the
IASP91 reference model (third column) (one cross section is shown in Fig. 3). The map in the
upper-right shows the relative location of the great circle path along which the cross-section is
made (heavy black line), the location of the PcP CMB reflection points for the data set (blue
dots) and the maximum number of seismograms contributing to the migration images along each
great circle path. The map at the bottom-right shows the number and relative location of
earthquakes that contributed to the data set used to form these images. The color scales are held
constant for all sections. The dominant feature in the upper row (the CMB reflector formed by
PcP arrivals) appears shallower along great circle paths that are out of the dominant sourcereceiver
plane, i.e. on profiles offset from where the CMB reflection points are. This is a result of
the scattering ellipsoids not having destructive interference due to the limited azimuthal sampling
provided by the data corridor. The raypaths through D'' of our data set are at near grazing-angles
and thus there is lateral streaking as in the S-wave migrations of (13).
To view these movies, download a QuickTime viewer.
