References

Mégnin, C. and B. Romanowicz, The three-dimensional shear velocity structure of the mantle from the inversion of body, surface and higher-mode waveforms, Geophys. J. Int.,143, 709-728, 2000.

He, Y., Wen, L., and Zheng, T., Geographic boundary and shear velocity structure of the "Pacific anomaly" near the core-mantle boundary beneath western Pacific, Earth Planet. Sci. Lett., 244, 302-314, 2006.

To, A., B. Romanowicz, Y. Capdeville and N. Takeuchi, 3D effects of sharp boundaries at the borders of the African and Pacific Superplumes: observation and modeling, Earth and Planet. Sci. Lett.,233, 137-153, 2005

Wen, L., Seismic evidence for a rapidly varying compositional anomaly at the base of the Earth's mantle beneath the Indian Ocean, Earth Planet. Sci. Lett., 194, 83-95. 2001.

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