Compressible thermochemical convection and application to lower mantle structures

  title={Compressible thermochemical convection and application to lower mantle structures},
  author={Eh Tan and Michael Gurnis},
[1] A new finite element code for compressible thermochemical convection is developed to study the stability of a chemical layer at the base of the mantle. Using composition-dependent compressibility and a density difference between compositions at a reference pressure, a composition-dependent density profile is derived. Together with depth-dependent thermal expansion, this combination of parameters yields a wide range of dynamic evolutions for the chemical layer. The chemical structures are… CONTINUE READING
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