| 一种考虑噪声干扰的地表风化层Q值反演方法 |
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| 引用本文： | 刘学伟,邰圣宏.一种考虑噪声干扰的地表风化层Q值反演方法[J].石油地球物理勘探,1996,31(3):367-373. |
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| 作者姓名： | 刘学伟 邰圣宏 |
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| 作者单位： | 长春地质学院地球物理系!130026 |
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| 摘 要： | 风化层对地震波的吸收十分强烈，补偿风化层对地震波的吸收，可以提高地震记录的分辨率。反演风化层的品质因数Ｑ是补偿吸收作用的重要一步，现今有很多反演Ｑ值的方法，但各各方法求出的Ｑ值的可靠性均与信噪比有关，当记录信噪比较低时，没有任何一种现行方法能求出可靠的Ｑ值。本文提出一种考虑噪声干扰近地表风化层的Ｑ值反演方法，并用理论记录和实际记录作了实验，得到了较好的效果。
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| 关 键 词： | Q值 风化层 噪声干扰 地震波吸收 地表 地震勘探 |
Weathered-layer Q-value inversion method with consideration of noise |
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| Liu Xuewei, Tai Shenghong and He Jiaodeng.Weathered-layer Q-value inversion method with consideration of noise[J].Oil Geophysical Prospecting,1996,31(3):367-373. |
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| Authors: | Liu Xuewei Tai Shenghong and He Jiaodeng |
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| Abstract: | Weathered layer absorbs seismic waves greatly. Compensation for the absorption due to weathered layer can improve resolution of seismic data. The inversion ofquality factor Q of weathered layer is an important step in absorption compensation. There are many Q-value inversion methods; but the reliability of the Q valuesestimated by the methods is related to seismic signal/noise ratio. None of the methods can offer reliable Q value in the case of low seismic signal/noise ratio. Hence wedevelop a new weathered-layer Q-value inversion method that considers noise. Thetrial results of real and theoretical data show good effect. |
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| Keywords: | Q value inversion resolution weathered layer noise |
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