Seismic anisotropy provides key constraints on Earth's interior deformation history. It can be measured using various seismological techniques, while mineral physics experiments, geodynamic models, and field observations help interpret these measurements in terms of present and past deformation and flow. Growing seismological datasets and methodological improvements have enabled more detailed investigations of crustal and lithospheric faulting and deformation, subduction dynamics, mantle circulation, and core-mantle boundary and inner core processes. Interpretations of these measurements benefit from increasingly robust constraints on the rheology and elastic properties of Earth's interior under shallow to extreme pressure and temperature conditions. At the same time, computational advances allow geologic processes to be modeled at unprecedented resolution, facilitating direct comparison with observations. We encourage contributions from all fields that enhance our understanding of Earth’s dynamics through seismic anisotropy.

• DI - Study of the Earth's Deep Interior
• MR - Mineral and Rock Physics
• NG - Nonlinear Geophysics
• T - Tectonophysics