子波一致性校正方法在海洋地震资料处理中的应用

在地表条件复杂多变地区的地震勘探中，野外地震资料采集通常采用多种震源联合施工方式，造成不同震源激发的原始单炮资料品质差异较大。为了消除这种差异，常规处理多采用频率匹配、振幅匹配和调整反褶积参数来调整不同震源单炮资料的频率和相位关系，但这种方式效率较低，甚至影响叠前处理效果。本文采用子波一致性校正方法，以振幅一致性校正为基础，通过选取信噪比较高、同一位置不同震源激发地震道，根据其中之一数据设计匹配滤波算子，将之应用到另外一个数据。本文将该方法应用到海洋地震数据中，可以解决不同震源海洋地震资料品质差异大的问题。

The Wavelet Coherence Method Used in Marine Seismic Data

In the complex surface condition of seismic exploration, field seismic data acquisi- tion usually uses the joint methods which can cause different shots quality from different seismic source. In order to eliminate this difference, conventional treatment such as fre- quency matching, amplitude matching and adjustment deconvolution parameters are used to adjust different frequency and phase relationships in single shot. But it is less efficient in this way, and even affects the pre--stack processing effects. In this paper, the consistency of the wavelet correction method is used based on amplitude consistency by choosing a high- er signal to noise ratio, the same location of different excitation source induced seismic traces. Filtering operator, according to one of those data, is applied to another data. The method can be applied to marine seismic data, so you can solve the huge difference of quali- ty between the different marine seismic data from different guns.