摘要
在原始的地震记录中,压制面波可以提高地震信噪比。在S变换和广义S变换的基础上,提出了含可变因子的S变换,利用这种方法压制地震记录中的面波成份。首先将地震记录通过含可变因子的S变换变换到时频域,在时频域中压制面波的成份,再变换回时间域,其结果就是滤掉面波的地震信号。针对这一方法,提出了实施流程,并将其应用于实际资料中。其应用效果表明,该方法能有效地压制面波,并保留了地震记录的反射波记录,具有适应性强,效果好等特点。
In the original earthquake records, suppressing surface wave interference can improve the seismic signal to noise ratio. On the basis of S transform and generalized S transform, this paper proposes Srtransform wilB variable factor and applied it to suppress surface waves in the seismic record component. Firstly, applying the transfo with variable faclor transforms seismic signal from time domain to time frequency domain. Then in the time-frequency domain, suppress surface wave components. Finally, transform back to the time domain and the resuh is filtered out of surface wave seismic signals. Flow chart of surface wave suppression is given and according to the technique, the authors put it into actual dta. The results show that the method suppresses surface wave and preserves other characters of seismic data effectively, and have good adaptability and effect.
出处
《物探化探计算技术》
CAS
CSCD
2013年第5期555-560,共6页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
S变换
含可变因子S变换
地震数据处理
面波压制
时频分析
S transform
generalized S sion
time-frequency analysis transform with variable-factor
seismic data processing
surface wave suppres
