This study uses simulations to explore D” flow, rock deformation, and seismic anisotropy. Results show strong deformation in D”, consistent with observed seismic anisotropy. Deformation strength increases with depth, particularly beneath the Central Pacific and Africa. Our findings align with anisotropy observations, advancing understanding of the D” layer dynamics.After download the data, unzip it, then you will find a folder in which there is a README file. Read this file for details about the data. There is a README file as well for each subfolder that describes the content of the subfolder.