计算分层介质中位错点源静态位移场的广义反射、透射系数矩阵和离散波数方法

A GENERALIZED REFLECTION-TRANSMITION COEFFICIENT MATRIX METHOD TO CALCULATE STATIC DISPLACEMENT FIELD OF A STRATIFIED HALF-SPACE BY DISLOCATION SOURCE

本文将计算合成地震图的广义反射、透射系数矩阵和离散波数方法应用于静态问题,给出了分层介质中位错点源产生的静态位移场的计算方法。该方法保留了反射、透射矩阵方法的原有优点,通过将数值结果与解析解的对比表明,该方法具有较高的数值精度,可用于研究地震断层活动造成的地表形变。

The generalized reflection-transmition coefficient matrix method for calculating synthetc se-ismograms is extended to deal with the static problems,from which a method to calculate the static displacement field of a stratified half space by dislocation source is developed.The advantages of the original reflection-transmition coefficient matrix method are retained.By comparing the numerical results with the analytical solutions,it is shown that this is an effective method for the investigation of the static deformation produced by seismic faulting process.From careful analysis we find there are both similarities and differences between the wave propagation and static problems.