地表一致性变预测步长反褶积与沙丘鸣震的压制  

Surface-consistent deconvolution using variable prediction step, and suppression of sand dune ringing

作　　者：凌云[1] 高军[1] 张汝杰[1] 

机构地区：[1]石油地球物理勘探局

出　　处：《石油地球物理勘探》1998年第1期23-31,共9页Oil Geophysical Prospecting

摘　　要：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 clear known that sea water ringing severely damages seismic data in ma-rine seismic exploration. In desert seismic exploration,there also occurs quite severeringing,which is often neglected in land seismic exploration because it is less regu-lar than sea water ringing. Real data analysis indicates that cycle 0f desert seismicringing is directly proportional to sand dune height- Hence surface-consistent decon-volution using variable prediction step is used to suppress such sand dune ringing.Good effect has been received in actual data pr0cessing.

关 键 词：地震数据处理 沙丘 鸣震 步长反褶积 地震勘探 

分 类 号：P631.443[天文地球—地质矿产勘探]