Fundamentals of elasticity of (Mg1−x, Fex)2SiO4 olivine
作者： M. Núñez-Valdez , K. Umemoto , R. M. Wentzcovitch
DOI: 10.1029/2010GL044205
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摘要: We study the influence of iron on elasticity (Mg1−x, Fex)2SiO4 olivine (0 ≤ x 0.125), a major constituent Earth's upper mantle. calculate static elastic properties by first principles for this solid solution and investigate effect atomic arrangement, an artifact supercell calculations, all single crystal poly-crystalline moduli. From calculated wave propagation velocities we find heterogeneity ratios shear to compressional velocity, bulk sound velocity. Their values are, though limited composition considerations, marginally consistent with seismic tomography.
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