复杂地表条件下的静校正方法

Method of static corrections under complex near-surface conditions.

在复杂地表条件下 ,由于静校正问题往往与低信噪比、地下构造复杂等问题联系在一起 ,因此需要在多个处理环节进行认真而细致的分析研究 ,并做好每一步处理工作 ,其中包括浮动基准面选择与野外高程校正、折射波的拾取、静校正时窗、非地表一致性静校正、速度分析与 NMO、切除等关键步骤的反复试验 ,以选取最合理的参数 ,并配合先进的静校正软件 ,可获得理想的静校正效果。

For the complex near-surface conditions,the issue of static corrections often connects with such issues as lower S/N and complex underground structures etc.T herefore,it needs to carefully analyze and study in many processing steps,well- doing each processing,which includes in repeat tests of key parameters in select ing floating datum and field elevation corrections,detection of refraction,ti me-window of static corrections,non-surface-consistent static corrections,vel ocity analysis and NMO and mute etc.,in order to select the most reasonable par ameters and with cooperation of advanced software of static corrections we can get ideal results of static corrections.