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在海洋地震勘探中,海水层间的鸣震干扰严重地影响着地震资料的质量,这是众所周知的。而在沙漠区进行的地震勘探,资料中也存在着较强的鸣震干扰,这是陆上地震勘探中往往被忽视的干扰波,主要是它不像海水层间的鸣震那样具有明显的规律性。实际资料的分析表明,沙漠区地震资料中鸣震干扰的周期与沙丘的高度成正比。据此,文中提出了基于地表一致性的变预测步长反褶积方法来压制这种沙丘鸣震干扰,并在实际应用中收到了较好的效果。
It is well-known that in marine seismic surveys, the seismic noise between seawater layers seriously affects the seismic data quality. In the seismic exploration in the desert area, there is also a strong ringing noise in the data, which is often neglected in onshore seismic exploration, mainly because it does not have the obvious Regularity. The analysis of the actual data shows that the period of the earthquake-induced disturbance in the seismic data of the desert is directly proportional to the height of the sand dune. Based on the above, the paper proposed a variable prediction step deconvolution method based on the surface consistency to suppress this sand dune ringing disturbance, and received good results in practical application.