摘要
The data acquired by multi-wave multi-component seismic exploration involves abundant wavefield information,which can be used for obtaining the information of P-SV wave.We proposed a velocity scanning method to separate the P-wave and P-SV wave from multi-wave multi-component data.In terms of P-wave velocity and zero-offset time,we derive the corresponding S-wave velocity expression.By S-wave velocity scanning,a series of P-SV time-distance curve is obtained.Then the P-SV time-distance curve is proceeded correlation match with multi-wave seismic data.When the correlation degree reaches to the maximum,the scanned S-wave velocity is most accurate,and then the best P-SV waveform is obtained,therefore,the P-wave and P-SV wave can be separated.The method is applied on the identification of P-SV wave in numerical simulated seismic records and achieves good wavefield separation result.