From Figure 11.8, what is the approximate difference in speeds between two vertically traveling qS waves in this material? Assuming that the upper mantle contains an anisotropic layer with pure...

From Figure 11.8, what is the approximate difference in speeds between two

vertically traveling qS waves in this material? Assuming that the upper mantle

contains an anisotropic layer with pure olivine aligned as in this plot, how thick

would the layer have to be to produce shear-wave splitting in vertical SKS waves

with a 2 s delay time between the split shear waves?