A strategy for nonlinear elastic inversion of seismic reflection data

摘要: The problem of interpretation seismic reflection data can be posed with sufficient generality using the concepts inverse theory. In its roughest formulation, consists obtaining Earth model for which predicted best fit observed data. If an adequate forward is used, this will give images Earth’s interior. Three parameters are needed describing a perfectly elastic, isotropic, Earth: density ρ(x) and Lame λ(x) μ(x), or P-wave S-wave velocities α(x) β(x). choice not neutral, in sense that although theoretically equivalent, if they adequately chosen numerical algorithms inversion inefficient. long (spatial) wavelengths model, velocities, while short wavelengths, impedance, adequate. o...