Application of simulated annealing inversion on high-frequency fundamental-mode Rayleigh wave dispersion curves

摘要: The simulated annealing (SA) inversion technique has been successfully applied for solving various nonlinear geophysical problems. Following previous developments, we modified the SA inversion, yielding 1D shallow S-wave velocity profiles from high frequency fundamental-mode Rayleigh dispersion curves, and validated with blind tests. Unlike applications of SA, this study draws random numbers a standard Gaussian distribution. simultaneously perturb both velocities layer thickness models. temperature is gradually decreased following polynomial-time cooling schedule. Phase are calculated using reflectivity-transmission coefficient method. reliability model resulting our implementation evaluated by statistically calculating expected values parameters their covariance matrices. Blind tests on two field 12 synthetic data sets show that works well curves high-frequency waves. estimates fall within one deviation original models in 78% cases.