【摘要】 广义S变换可将地震记录分解到时频域,通过时频域上的不同分布,区分有效波和面波。时频域滤波只会消除面波发育时间处的频率成分,而不影响其他时间点的信号,减少了对有效波的影响,同时避免了区域滤波在时窗边缘处的波形畸变作用。理论模型和实际资料测试均取得了良好的处理效果。更多还原

【Abstract】 The seismic data could be transformed to time- frequency domain by the generalized S- transform and divided into effective wave and surface wave through their differences of the distribution in the time- frequency domain. The frequency contents at the place where the surface waves appear are removed only by the filtering in time-frequency domain, and the signals at the other time points are not removed, avoiding the waveform distortion of the areal filtering at the boundaries of the time window, and a good result are obtained in the tests on the theoretical model and actual data model.更多还原