| 横向各向同性介质中地震波速度分析及其意义 |
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| 引用本文： | 张秉铭,滕吉文.横向各向同性介质中地震波速度分析及其意义[J].地球物理学进展,1997,12(1):53-60. |
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| 作者姓名： | 张秉铭 滕吉文 |
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| 作者单位： | 中国科学院地球物理所!北京，100101，中国科学院地球物理所!北京，100101，中国科学院地球物理所!北京，100101 |
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| 基金项目： | 中国科学院院长专项基金 |
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| 摘 要： | 在地震学有关领域中，地下介质的薄互层特性与裂隙的定向人布在长波长假设下会产生等效的地震各向异性特性，地震波速度随传播方向和深度发生的变化引起了广大地球物理工作者的广泛兴趣，因为速度拾取的正确与否，会直接影响到油气勘探中动校、偏移、ＡＶＯ和时深转换的结果。本文着重讨论了传统速度分析的局限性，分析了薄互层引起的横向各向同性介质中速度分析的现状和结果，实例讨论了各向异性效应对偏移处理的影响，表明各向异性
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| 关 键 词： | 各向异性 速度拾取 同性介质 地震波 速度分析 |
VELOCITY ANALYSIS AND ITS IMPLICATION IN TRANSVERSELY ISOTROPIC MEDIA |
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| Zhang Bingming, Teng Jiwen, Wan Zichao.VELOCITY ANALYSIS AND ITS IMPLICATION IN TRANSVERSELY ISOTROPIC MEDIA[J].Progress in Geophysics,1997,12(1):53-60. |
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| Authors: | Zhang Bingming Teng Jiwen Wan Zichao |
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| Abstract: | Tn the field of seismic research, the finc layers character of underground media and the directional dislribution of fractures would causc seismic anisotropy under the assump tJon of long wavc theory. Geophysical scientists have had a lot of intcrcst in seismic velocity variation with the alternation of propagation dircction and depth. The accuracy of velocity picking wil1 affect directly the results of NMO' migration, AVO and transformation of profile from timc domain to depth domain. The paper concentrates on the limitation of average velocity analysis and analyze the velocity analysis in TT media caused by the fine layers. It discusses the innuence or anisotropy to thc migration procession by real facts. It is beneficial to the accurate location and the improvemcnt of transverse resolution of underground media while allowing for anisotropy. |
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| Keywords: | Anisotropy Velocity Picking Time Difference Migration Resolution |
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