基于自由界面影响与偏振特性的纵横波分离方法

Separating shear wave from compressional wave by considering both free-interface effect and polarization character

以往分离纵、横渡仅考虑了纵横波的编报特性，未考虑自由界面的影响。实际上入射到自由界面的纵、横波是客观存在的。为此平文试图在纵、横波分离中综合考虑偏振特性与自由界面散射特性。文中理论指导给出的界式．既可体现纵、横渡的动力学偏振特性，又可自动消除自由界面的影响。对实际资料的试算收到了良好的效果，说明该方法是可行的。

People only consider polarization characters of compressional and shear wavesbut neglect free interface effect in separating shear wave from compressional wave.It is posltive that compressional and shear waves are also incident upon free inter-face- Hence, both polarization character and free interface scattering are consideredin separating off compressional wave and shear wave in this article. Theoreticalcomputation formulae in this article not only reflect the dynamic polarization char-acters but also remove free interface effect. Good result has been seen in real dataprocessing. The method is feasible.