绕射波的叠加效应分析

在测线垂直断棱情况下，通过绕射波与反射波时距曲线的关系以及绕射波动校正前后的特点分析，着重讨论了绕射点埋深h相同、L值(炮点与绕射点在地面投影点间的距离)不同情况下，绕射波在水平迭加剖面中出现顶部迭加振幅最强，尾部振幅衰减很快的原因。

ANALYSIS OF STACK EFFECT OF DIFFRACTED WAVES

By studying the relations between the time graphs of the diffracted waveand the reflective wave as well as the characteristics before and after theNMO of the diffracted waves，e m phasis is laid on the discussion of thereason why the largest graphs diffracted wave amplitudes occur in the top of the diffracted wave to and why the amplitudes attenuated at great speedoccurin the tails of the diffracted wave graphs to in the horizontal stacksection, when the seismic line is normal to a fault edge in the case ofthe sa m e buried depths h of the diffracted point and different values L(thedistance from the shotpoint to the projection point of the diffracted pointon the surface.)