预测反褶积用于消除深海鸣震的一种新途径

AN APPROACH TO THE ELIMINATION OF DEEP SEA REVERBERATIONS BY PREDICTIVE DECONVOLVTION

过去,在处理深海域的地震资料时,一般是采用“反向消去法”或“深水波形预测反褶积法”来消除鸣震。但是,当鸣震和反射波互相干涉时,这些方法的效果不理想。为了改善这类资料的处理效果,本文提出一种新的“深海预测反褶积法”。与上述两种方法比较,这种方法所要求的前提条件少,应用的范围更广泛。理论分析和模型试验的结果表明,这种方法的效果是令人满意的。

Normally, the reverberations were eliminated either by "Reversal Elimination" or "Deep Water Wave Form Predictive Deconvolution" while processing the seismic data of deep ocean area in the past. Howe- ver, the results of cither method have lieen proved far from perfect, while interference happened between reverberation and reflec ted wave. For the sole purpose of obtaining better results from such data-processing, the authors of this paper recommended us an approach, the Deep Sea Predictive Deconvolution. The prerequisites of this method are much less and also it can provide a wide-ranging availabilities as compared with the two methods mentioned above. Anyway, It should be considered acceptable as a result of theoretical analysis as well as model experiments.