Application of improved simulated annealing algorithm in the study of depth of interfaces in the crust and upper mantle
改进模拟退火算法在研究地壳上地幔层面位置中的应用

Base on the Metropolis rule, we improved the simulated annealing algorithm to simultaneously inverse the velocities and thicknesses using the dispersion data. The application to the numerical examples shows the non-linear results are close to the original models, when the condition of selecting method for temperature parameters and initial temperature are satisfied. Using the pure dispersions of Rayleigh wave, the non-linear inversion has been carried out for S wave velocities and thicknesses of the vertical profile along 86°E, crossing India, Qinghai-Tibet Plateau, Tarim Basin. The layers by the non-linear inversion can be recognized easily from the velocity values and their offsets.