第三章速度分析、静校正和叠加 3.4 剩余静校正反射时间常常受不规则表层的影响,这点可由图3—29的实例很好的说明。图左边的炮道集得到较好的双曲线时差的反射,而右边的炮点道集上的反射与规则的双曲线时差有很大差别,尽管这种畸变可能是由深部界面的复杂构造引起的,但更多的是由近地表的不规则性引起的。野外静校正消除了资料中的这些旅行时畸变的一大部分。尽管 Chapter 3 Velocity Analysis, Static Correction, and Overlay 3.4 Remaining Static Correction Time is often affected by an irregular surface, as illustrated by the example in Figure 3-29. The set of shots on the left of the figure gives better reflection of the hyperbolic time difference, whereas the reflection on the right shot gathers differs greatly from the regular hyperbola, although this distortion may be caused by the complex configuration of the deep interface But more is caused by the near-surface irregularities. Field static correction eliminates a large part of these travel-time distortions in the data. in spite of