Maps of of CMB topography derived from P, PcP, PKP and PKKP travel times compared to the down-dip directions inferred from polarization anomalies. Dip directions are shown with long bars and circles denote observations with inadequately constrained dip estimates. The solid lines are 1 km contours of elevation and depressions dashed. The coherence with the topographic gradients beneath SE Asia, Africa and the mid-Atlantic is evident. Contour interval is 0.1 km for positive elevations in this figure only.
Short bars indicate uncertainty of down-dip direction estimates.
First Figure 5 ref. Back to abstract.