Abstract：There are many methods for separating P wave Pram S wave,τ-p transform method is oFten used,It is benerally thought that P wave and converted S wave in τ-p domain are almost separate or little overlapped,therefore they can be parted from each other by simple meting,As a matter of fact,simple muting can not separate P wave from converted S wave because their corresponding slope values are hardly distinguish-able within a big extent,We deem that the separation of P wave frbm S wave can be well done by muting along P wave trace or S wave trace.VG a demonstrate the principle of this trace muting method far separating P wave from S wave,and detail how separation effect is influenced by group interval transform spacing or random noise.Theoretical modeling and rLal data experimental result led to the following conclusive points: ·If transform spacing is constant (dp=5.4×10-6),halving the group interval in the case of fixed spread length(doubiing the channels) greatly reduces abasing,thus bringing good separation effect.·If group interval (dx) is canstant,halvin,the transform spacing remaves aliasilng to bring better separatian effect. It is thus clear that reducing dx or dp can improve separation effect,Random noise does not damage separation effect.
詹正彬, 刘江平, 朱培民. 一种分离纵横波的方法[J]. 石油地球物理勘探, 1990, 25(3): 286-295.
Zhan Zhengbin, Liu Jiangping, Zhu Peimin. A method for separating P wave from S wave. OGP, 1990, 25(3): 286-295.
