Ascertaining the structure parameters of Kunlun fault zone using the grid searching method based on trapped wave correlation
利用基于围陷波波形相关的网格搜索法确定昆仑山断裂带结构参数

In this paper, a method for quantitative analysis of the structure parameters of fault zones is proposed by using a grid search method based on trapped wave correlation. A series of models with the parameters of fault zone structures are set up, and the simulations of trapped waves are performed using the finite difference algorithm. After the fitness between synthetics and observed trapped waves is analyzed, the variation tendency of correlation coefficients is calculated in the multi-dimensional coordinate systems of the structure parameters of fault zones. A grid search process for the peak of the correlation coefficients is carried out in order to ascertain the optimal structure parameters. We analyze the trapped waves generated by explosions in the Kunlun fault zone and ascertain the width and Q value of the Kunlun fault zone using the method.