J. Int. , 1999. Li, X.-D. and B. Romanowicz, Global mantle shear velocity model developed using nonlinear asymptotic coupling theory. Masters, G., S. Johnson, G. Laske, and H. Bolton, A shear-velocity model of the mantle. Resovsky, J.S. and M.H. Ritzwoller, New and refined constraints on three-dimensional Earth structure from normal modes below 3 mHz, J. Geophys. X.-D. Li, Evidence for inner core anisotropy from free oscillations, Geophys.
Dark regions indicate high geoid anomaly, and light regions indicate low geoid anomaly.
The scale is 80 m.