Abstract：Surface wave is a regular noise wave existing widely in seismic data,and its e-limination is very difficult in data processing. Usual filtering methods eliminate sur-face wave,but damage useful signals which coexist with surface wave in the samefrequency band.On the basis of the fact that surface wave energy is stronger thanreflection energy in low frequency range,and on the assumption that surface waveenergy varies slowly in small frequency and space ranges,we advance a new methodthat includes the following steps:·On the basis of frequency-band decomposition of wavelet transform,lineartime shift of surface wave is achieved by using its apparent velocity,making surfacewave intertrace-coherent Surface wave is abstracted by making K.L decomposition or doing wavelet transform in x-axis direction,then is subtracted from the original seismic data.Synthetic and real data processing results show that the method can desirably eliminate surface wave,without damage of low-frequency reflection contents.
罗国安, 杜世通. 小波变换及信号重建在压制面波中的应用[J]. 石油地球物理勘探, 1996, 31(3): 337-349.
Luo Guoan, Du Shitong. Application of wavelet transform and signal reconstruction in surface wave elimination. OGP, 1996, 31(3): 337-349.
