海上多波地震勘探检波器方位误差校正

ORIENTATION CORRECTION FOR GEOPHONE IN OFFSHORE MULTI-COMPONENT SEISMIC EXPLORATION

在进行海上多波地震勘探时，无论采用拖拽式还是回收重放式作业，由于海流，海底障碍物的影响，检波器的位置及检波器的X、Y方位都会与设计方位有误差，文中提出利用电缆定位资料和检波器X、Y分量的能量两种方法估算方位误差，然后通过方位旋转来进行方位误差校正，用后一种方法对南海某地多波地震勘探资料进行了试验处理，取得了较好的效果。

In offshore multi-component seismic exploration, draging cable or reseting cable are used, but there must be errors between designed and actual site and orientation of X,Y components in cable because the effect of ocean current and seabed obstructions. Authors developed two methods of calculating orientation errors: 1) using cable site data, 2) using energy of X,Y components. Then orientation errors are corrected by orientation rotation. Using the second method, better results have been obtained in experimentally processing of the actual multi-component seismic data from a certain region of the South China Sea.