Knowledge on the deformation mechanisms of Mg2SiO4 ringwoodite is important for the understanding of flow and seismic anisotropy in the Earth’s mantle transition zone. We report here the first numerical modelling of dislocation structures in ringwoodite. The dislocation properties are calculated through the Peierls-Nabarro model using the generalized stacking fault (GSF) results as a starting m...

There is renewed interest in velocity anisotropy, and publications of researchers outside SEP describe various schemes for estimating anisotropic moveout from seismic data. However, those schemes often face problems in that they commit too early to a particular class of elastic models which may require auxiliary information not available from surface seismic data. In essence, they are model-dri...