Summary map of the properties of shallow intralithospheric interfaces as derived from the harmonic expansion. Here we plot anisotropic contrasts within the shallow mantle lithosphere that do not correspond to isotropic velocity drops (those interfaces are shown in Fig. 11). Stations ERPA and SSPA do not overlie any such interfaces. As in Figure 9, solid lines show the azimuthal phase information for the k = 1 terms in the harmonic expansion, while dotted lines show the azimuthal phase information for the k = 2 terms in the harmonic expansion. Each of the k = 1 orientations is marked with the arrival time of the Ps converted phase (relative to direct P wave arrival).
{}