摘要
本文提出两种新的波场变换：k－x与t－x波场变换。它是将时距域内的波场变换到斜率—距离域或距－距离域。在新的域内，直达波、面波等均变换为大致平行的波场。若将这些强干扰提取出来，经反变换回到时距城再从原始剖面中将这些干扰波消去，即可达到去噪目的；而有效波被完整地保留在记录上。该方法对干扰区以外的地震波无任何影响。这种变换是一种坐标变换，因而是保幅变换，可在局部区内实现。
New k-x and r-x wave field transforms are put forward,Which transform wavefield from t-x domain into k-x or t-x domain. In the new domains,direct and surfacewave fields etc. are nearly parallel each other. lf the extracted strong noises are in-versely transformed into t-x domain and removed from the original seismic section, the effective waves can be fully retained in the seismic section,without noise left.This method never damages the seismic waves outside a noise-contaminated area.This trans form only involves coordinate transformation, without amplitudechanged. It can be used in partial area.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1994年第1期37-47,共11页
Oil Geophysical Prospecting
关键词
地震数据处理
波场变换
seismic data processing, wave field transformation, k-x transform,τ-x transform
