从近地表的速度和厚度模型所推导出来的野外静校正值用于一个道集上,以使由以下原因引起的反射双曲线的畸变为最小。 (1)在一道集中不同炮点和检波点位置而引起地表高程值的差异; (2)在风化层中低速度的横向变化; (3)风化层基底的无规则性。静校正是从同一道集中加上或者减去一段时间,使各道位于同一基准面上(在基准面以 The field static correction derived from near-surface velocity and thickness models is used on a gatherer so that the distortion of the reflection hyperbola is minimized by the following causes. (1) Differences in surface elevation caused by the concentration of different shots and checkpoints; (2) Lateral variation of low velocity in the weathering layer; and (3) Irregularity of the base of the weathering layer. Static correction is to add or subtract from the same focus for a period of time so that the paths are on the same plane