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风化层对地震波的强烈吸收作用导致地震记录分辨率降低。根据粘弹波动理论,这种吸收作用相当于线性时不变滤波。对地震记录进行吸收的补偿处理可以提高分辨率,为此,需要反演风化层的Q值。本文利用面波来反演风化层的Q值。由于本方法考虑到噪声的存在,其抗噪能力较强。文章给出了实际资料的处理结果。
Strong absorption of seismic waves by weathering layers leads to a decrease in seismic resolution. According to viscoelastic wave theory, this kind of absorption is equivalent to linear invariant filtering. Compensation for seismic records can improve the resolution, so we need to invert the Q value of the weathering layer. In this paper, the surface wave is used to retrieve the Q value of the weathering layer. Because this method considers the existence of noise, its anti-noise ability is stronger. The article gives the actual data processing results.