τ-p域AVO分析
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摘要
利用技坐标τ-p变换可以实现点源地震记录的平面波分解。本文对合成理论球面波波场进行了柱坐标τ-p变换,验证了该变换对真振幅恢复的准确性。该方法对实际资料进行处理的结果表明:τ-p域的振幅信息可信度较高,信噪比得到了改善。在此基础上,还进行了τ-p域内的振幅一射线参数关系分析,取得了令人满章的效果。
Plane wave decomposition of point-source seismic data can be achieved by per-forming τ-p transform in cylindrical coordinate system. Cylindrical-coordinate τ-ptransform of theoretical spherical wave field is done to check the correctness of true amplitude recovery using this transform. The real data processing result obtained by this method shows that amplitude information in τ-p domain is of high reliability and has the improved signal/noise ratio. Relation between amplitude and ray param-eter in τ-p domain is analysed,bringing satisfactory result.
引文
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