Probabilistic Tomography Maps Chemical Heterogeneities Throughout the Lower Mantle

@article{Trampert2004ProbabilisticTM,
  title={Probabilistic Tomography Maps Chemical Heterogeneities Throughout the Lower Mantle},
  author={J. Trampert and F. Deschamps and Joseph S. Resovsky and D. Yuen},
  journal={Science},
  year={2004},
  volume={306},
  pages={853 - 856}
}
We obtained likelihoods in the lower mantle for long-wavelength models of bulk sound and shear wave speed, density, and boundary topography, compatible with gravity constraints, from normal mode splitting functions and surface wave data. Taking into account the large uncertainties in Earth's thermodynamic reference state and the published range of mineral physics data, we converted the tomographic likelihoods into probability density functions for temperature, perovskite, and iron variations… Expand
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