Seismic wave modelling and inversion for the most general 3-D anisotropic media

将开发和应用先进的数值技术来模拟地震波在复杂的三维地球中传播的运动学和动力学特性，包括地形、非均质性和由21个空间相关弹性系数定义的最一般的各向异性。我们将发展用于各向异性旅行时层析成像的2D/3D射线追踪方法，用于观测数据全波形反演的2.5D/3D频域谱元素方法，并使这些技术适用于地球各种各向异性条件下的地下成像。这一结果将对石油勘探、地震地震学和探测地球深部结构具有重要意义。

Advanced numerical techniques will be developed and applied to simulate the kinematic and dynamic properties of seismic wave propagation in a complex three-dimensional Earth, involving topography, heterogeneity and the most general anisotropy defined by 21 spatially-dependent elastic moduli. We will develop 2D/3D ray-tracing methods for anisotropic traveltime tomography, 2.5D/3D frequency-domain spectral element methods for full waveform inversion of observational data, and make all these techniques applicable for subsurface imaging under various classes of anisotropy in the Earth. Results will be important for petroleum exploration as well as earthquake seismology and probing the structure of the Earth's deep interior.