基于贝叶斯理论面波频散曲线随机反演

刘辉, 李静, 曾昭发, 王天琪

Stochastic inversion of surface wave dispersion curves based on Bayesian theory

LIU Hui, LI Jing, ZENG Zhao-Fa, WANG Tian-Qi

图5 4层含低速夹层模型基阶频散曲线反演 a—无约束反演结果;b—有先验约束反演结果;c—无约束反演的最佳模型与实际模型频散曲线;d—无约束反演频散曲线误差;e—有先验约束反演的最佳模型与实际模型频散曲线;f—带约束反演频散曲线误差;g—迭代误差曲线

Fig.5 Fundamental dispersion curve inversion of low-velocity layer model a—stochastic inversion results without constraints;b—stochastic inversion results with prior constraints;c—dispersion curve of the best fitting model and true model for unconstrained inversion;d—error of dispersion curve for unconstrained inversion;e—dispersion curves of the best fitting model and the true model with prior constraint inversion;f—error of dispersion curve with prior constraint inversion;g—misfit iteration curve