抄録
In order to investigate the transportation process of water into the Earth’s interior, we investigated the elasticity of antigorite, chlorite, and talc by the first-principles calculation. We confirmed that trench parallel polarization anisotropy can be produced by the lattice preferred orientation of these hydrous minerals. We also found that the polarization direction is drastically changed by tilting the foliation plane and the trench normal fast polarization observed in the back-arc region can also be explained by the preferred orientation of these minerals.
