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

最常见的 3-D 各向异性介质的地震波建模和反演

• 批准号: DP0452187
• 负责人: Prof Stewart Greenhalgh
• 金额: $ 18.8万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0452187
• 关键词: Seismic; wave; modelling; inversion; most

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.

将开发和应用先进的数值技术，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、不均匀性和由21种空间相关弹性模量界定的最一般的各向异性。我们将开发用于各向异性走时层析成像的2D/3D射线追踪方法，用于观测数据的全波形反演的2.5D/3D频域谱元方法，并使所有这些技术适用于地球各种各向异性下的地下成像。其结果对石油勘探、地震学和探测地球深部结构都将具有重要意义。