一、前言一张反射剖面图表现的是地下界面的非“聚焦”图象。在地层结构复杂地区,这种非:“聚焦”图象不能揭示出地下界面的真正几何形态。有时,未经偏移校正处理的反射剖面根据其反射特征,有可能反映出一些孤立的构造(如一个断层或一个向斜)。但一般说来,应用偏移校正将复杂地区的反射资料进行“聚焦”是必要的。 I. Introduction A reflection profile shows a non-“focused” image of the underground interface. In areas with complex stratigraphic structures, this type of “non-focused” image does not reveal the true geometry of the underground interface. In some cases, a reflection profile without offset correction may reflect isolated structures (such as a fault or a syncline) based on its reflection characteristics. However, in general, it is necessary to use “Offset” correction to “focus” the reflection data in complex areas.